| June 17, 2024

ISPs Driving Transformation in Broadband Performance Across the Caribbean

ISPs in the Caribbean have helped drive a step-change in performance across the region over the past four years. Fiber is at the forefront of this change, helping drive performance gains in terms of throughput and latency in leading markets such as Trinidad and Tobago, Bermuda, and the Cayman Islands, while Starlink’s LEO service is gaining a foothold in a number of islands too. Outside the leading Caribbean markets, performance varies significantly, but even among those lagging the regional average are advancing rapidly.

Key takeaways

  • Growing availability of faster broadband across the Caribbean. The last four years have seen a transformation in broadband performance in the Caribbean. Across the markets in this analysis, network Consistency – the share of Speedtest samples exceeding a threshold of 25 Mbps download and 3 Mbps upload – increased from 45.3% in Q1 2020, to 73.3% as of Q1 2024.
  • Fiber adoption driving performance gains. Trinidad and Tobago, Bermuda, and the Cayman Islands led the Caribbean region on fixed broadband performance, recording median download speeds of 110.26 Mbps, 109.79 Mbps, and 104.88 Mbps, respectively during Q1 2024. Strong fiber performance from a number of ISPs, including Digicel+ (across a range of markets), Amplia (Trinidad and Tobago), as well as Flow, Logic, and C3 Pure Fiber (Cayman Islands), helped drive this, with all recording median download speeds approaching or above 100 Mbps.
  • Latency performance varies hugely across the Caribbean. Key for real-time applications such as online gaming and video calling, latency performance varied significantly across the region. Thanks to the availability of fiber to most broadband users, markets such as Trinidad and Tobago hit median latency lows of just 15 ms in Q1 2024, while at the other end of the scale, markets such as Aruba and Haiti struggled with median latency approaching 100 ms.
  • Markets behind the curve are quickly catching up. The majority of Caribbean markets currently below the regional average for fixed network Consistency are catching up fast, led by markets such as the Dominican Republic, Sint Maarten, and the British Virgin Islands, which all increased network Consistency by more than 25 percentage points over the last two years. 

Fixed network performance varies dramatically across the Caribbean

Ookla Speedtest Intelligence® data shows a wide disparity in median fixed broadband performance across Caribbean markets, ranging from lows of 2.72 Mbps and 25.21 Mbps in Cuba and Sint Maarten respectively, to highs of 110.26 Mbps and 109.79 Mbps in Trinidad and Tobago, and Bermuda respectively. Median upload performance mimicked this trend, with a low of 1.02 Mbps for Cuba and a high of 89.15 Mbps in the Cayman Islands.

Fixed Broadband Performance Across Caribbean Markets
Speedtest Intelligence® | Q1 2024

Latency performance showed even greater variance, with some markets being able to access high-speed international links, and with others relying on multiple hops of undersea cables. Eight of the markets we examined recorded median multi-server latency below 50ms, with Trinidad and Tobago leading with 15ms, followed closely by Curaçao with 16ms. At the other end of the scale, a cluster of nine markets recorded latency ranging from 71 ms to 95 ms, while Cuba was the only market with median latency greater than 100 ms, recording 133 ms in Q1 2024. This marks an improvement year-on-year, down from 164 ms in Q1 2023, with the Arimao submarine cable (connecting Cuba to Martinique), helping drive some improvement, however, the island’s aging telecoms infrastructure continues to hold it back.

Fiber is the natural next step for many Caribbean ISPs

A number of Caribbean ISPs, led by groups such as Digicel, are transitioning to fiber access across their fixed operations. The transition from legacy broadband access technology to more modern, faster connections such as fiber takes time. In addition to network rollout and the significant public works this entails, operators and regulators need to ensure users are given enough incentive and education on the benefits of technologies such as fiber, in order to help drive adoption. Digicel+ in Bermuda stands out as a clear leader in the region on median download performance, followed by Digicel+ in Trinidad and Tobago. Beyond Digicel+, Logic, and C3 Pure Fiber in the Cayman Islands, and Amplia in Trinidad and Tobago all offered median download speeds approaching 100 Mbps. 

ISP Fiber Performance, Caribbean Markets
Speedtest Intelligence® | Q1 2024

Drive for broadband expansion puts leading Caribbean markets on par with the U.S. and Canada

Caribbean ISPs have made great strides in advancing the rollout of broadband services over the last four years. Ookla uses the network Consistency metric to gauge how prevalent acceptable broadband speeds are across a network, based on the percentage of Speedtest samples exceeding a threshold of 25 Mbps download and 3 Mbps upload performance. Cuba was rooted to the foot of the table based on Consistency, with just 4.0% of samples exceeding the threshold. Of the remaining Caribbean markets in this analysis, network Consistency climbed from 45.3% in Q1 2020 to 73.3% in Q1 2024.

The majority of Caribbean nations in this analysis recorded Consistency above 70% as of Q1 2024, with leading Caribbean nations such as Bermuda, Trinidad and Tobago, the Cayman Islands, Puerto Rico, and Barbados posting Consistency values approaching those of more advanced fixed markets in the Americas, such as the U.S. (89.8%) and Canada (88.7%).

Fixed Broadband Consistency Across Caribbean Markets
Speedtest Intelligence® | Q1 2024

This positive trajectory looks set to continue for many markets at the lower end of the scale too, as they look to catch up with their peers. The vast majority of those Caribbean markets recording less than 75% Consistency in Q1 2024, had increased their Consistency significantly over the past two years, led by Haiti, Sint Maarten, the British Virgin Islands and the Dominican Republic.

Change in Fixed Network Consistency, Select Caribbean Markets
Speedtest Intelligence® | Q1 2022 vs Q1 2024

Leading Caribbean markets face slowing Consistency growth and competition from non-traditional fixed ISPs

We see a mixed picture for leading Caribbean nations on further increases in network Consistency as they begin to approach other leading markets globally. Despite strong fixed broadband performance in many Caribbean markets, increases in network Consistency have been relatively static in some, including Bermuda, Aruba, and Grenada, which all saw network Consistency increase by less than 3 percentage points in the last two years. This indicates a tranche of users in these markets remain below the 25 Mbps download and 3 Mbps upload performance thresholds used in our measure of Consistency.

While growth will naturally slow as markets approach nationwide availability of fixed broadband services exceeding 25 Mbps download and 3 Mbps upload, operators in these markets need to zero in on locations where performance lags the rest of the market and identify root causes. For regulators, the priority may lie in encouraging the sunsetting of legacy fixed technologies, and facilitating the rollout and adoption of faster technologies such as fiber.

Change in Fixed Network Consistency, Leading Caribbean Markets
Speedtest Intelligence® | Q1 2022 vs Q1 2024

LEO satellite broadband is emerging as a viable home broadband alternative

We are beginning to see some alternative fixed broadband technologies make inroads within the Caribbean, following on the heels of their success in North America. While we see some instances of GEO and MEO satellite internet use across the Caribbean, the majority of satellite internet within the region, based on Speedtest samples, is from Starlink’s LEO service. Over the course of the last year (comparing Q1 2024 with Q1 2023), samples from Starlink among the markets in this analysis grew by 85.8%, and it continues to expand its service availability across Caribbean markets. According to its website, Starlink operates across a range of Caribbean markets, and of those included in this analysis, it is available in the Bahamas, Barbados, the Dominican Republic, Haiti, Jamaica, Puerto Rico, Trinidad and Tobago, and the U.S. Virgin Islands.

Starlink performed on par with, or faster than, the median download speed in each market it operated within, recording significant leads in the U.S. Virgin Islands and the Bahamas. However, Starlink does tend to lag the rest of the market on upload speeds and latency. While the cost of Starlink equipment and its subscriptions are often higher than for terrestrial broadband options, which will put it out of reach of some broadband users, it offers a viable alternative, especially in locations where legacy fixed broadband access is still prevalent, and where users prefer faster download performance.

Starlink Performance, Median Download Speed, Mbps
Speedtest Intelligence® | Q1 2024

With a range of cellular providers launching 5G across the Caribbean, we may begin to see 5G fixed-wireless (FWA) access begin to take root, as it has done in the U.S. Given the wide range of performance across the Caribbean, 5G FWA could offer users an uplift in speeds versus traditional fixed networks, and it will give cellular providers the opportunity to upsell home internet services to their existing mobile customer bases. While it’s still early days for these rival technologies, we’ll continue to monitor their progress and provide updates on the state of fixed broadband connectivity across the Caribbean. For more information about Ookla’s data and insights, please get in touch.

Ookla retains ownership of this article including all of the intellectual property rights, data, content graphs and analysis. This article may not be quoted, reproduced, distributed or published for any commercial purpose without prior consent. Members of the press and others using the findings in this article for non-commercial purposes are welcome to publicly share and link to report information with attribution to Ookla.

| May 2, 2018

The American Globetrotter's Guide to Roaming Speeds

Mobile roaming has come a long way from the days when I spent most of my tour of China touring hotel lobbies desperately hoping to connect my U.S. flip phone to the Wi-Fi. Not only can you actually get a signal in most countries these days, some carriers offer special packages for the jet set so you don’t have to pay extra for roaming calls and data.

But how are the speeds?

Using Q1 2018 Speedtest® data, we’re here to report on mobile roaming speeds for U.S. consumers in 15 popular destinations, including which carriers are fastest where. For overall speeds we look at data from all devices and when we analyze carriers we look only at data for modern (LTE-capable) devices.

Where roaming speeds will (and will not) let you down

Get thee to Canada! Our analysis of roaming Speedtest results found that U.S. customers in Canada saw a mean download speed of 42.03 Mbps during Q1 2018. That’s not quite as fast as the 45.28 Mbps Canadians receive on their home mobile networks, but it beats the 27.08 Mbps average in the U.S.

Roaming Speeds for U.S. Customers Abroad
Q1 2018
Country Download (Mbps) Upload (Mbps)
Canada 42.03 13.50
South Korea 21.81 8.60
Mexico 18.02 10.18
Spain 13.23 7.09
Italy 12.70 6.38
France 12.48 5.45
Australia 11.84 6.96
Japan 10.91 4.79
United Kingdom 10.40 5.68
Germany 9.02 4.03
Costa Rica 7.72 4.11
China 7.05 3.91
Dominican Republic 5.75 3.58
India 2.96 1.96
The Bahamas 1.70 2.99

Second place South Korea showed roaming speeds for U.S. travelers about half as fast as those in Canada. Mexico was third fastest. The middle tier of the roaming speed ranking is taken up mostly by western European countries (with Japan and Australia to break up the pack).

At the bottom of the spectrum, Bahamian roaming speeds are painfully slow. They aren’t much better in India or the Dominican Republic.

A lot of factors go into the roaming speeds you’ll experience abroad, including how carriers prioritize out of country traffic, something that’s decided between each individual carrier in each individual country.

How does your carrier stack up?

Your roaming experience on your next trip is going to depend a lot on which carrier you have, so we broke our roaming speed analysis of Speedtest results on modern devices down to the carrier level.

US Carrier Speeds While Roaming Abroad
Q1 2018 | Mean Download (Mbps)
Country AT&T Sprint T-Mobile Verizon Wireless
Australia 21.24 N/A 2.14 22.14
Canada 26.53 27.65 53.56 43.22
China 17.23 4.77 1.15 13.15
Costa Rica 13.67 N/A 0.70 14.86
Dominican Republic 11.00 N/A 0.57 7.68
France 22.72 N/A 1.96 26.30
Germany 20.55 N/A 1.86 20.58
India 4.92 1.70 0.79 7.13
Italy 24.05 N/A 1.99 25.19
Japan 18.22 24.79 1.40 11.46
Mexico 19.95 9.66 17.22 22.35
South Korea 27.97 17.49 21.67 N/A
Spain 29.27 N/A 1.18 24.82
The Bahamas 1.79 N/A 0.25 3.53
United Kingdom 19.87 9.07 1.74 16.61

From the above, it looks like there’s no one right answer for the fastest roaming carrier. And there are other things to consider when roaming, too, like does your carrier offer a special plan that includes free roaming or are you paying through the nose.

It’s important to remember that roaming comes at a cost to carriers, which means that if your carrier includes free or low-cost roaming on almost all types of plans, the trade-off might be that you get slower speeds than you would with another carrier.

So if speed is your primary criterion, there are two standouts on this list. Verizon wins eight of the 15 countries we analyzed and AT&T wins six. T-Mobile and Sprint each win one country. We excluded Sprint from the running in eight countries because of a low number of test results.

Are you roaming (for business or pleasure) this summer? Take a Speedtest on Android or iOS to show us how fast (or slow) your connection is.

Ookla retains ownership of this article including all of the intellectual property rights, data, content graphs and analysis. This article may not be quoted, reproduced, distributed or published for any commercial purpose without prior consent. Members of the press and others using the findings in this article for non-commercial purposes are welcome to publicly share and link to report information with attribution to Ookla.

| September 4, 2019

In-Depth Analysis of Changes in World Internet Performance Using the Speedtest Global Index

A lot has changed in the two years since 2017 when we first began ranking mobile and fixed broadband speeds of countries around the world with the Speedtest Global IndexTM. 5G is being deployed around the world and fiber continues to make gigabit speeds a reality in more and more countries. We’ve been tracking it all and are here to report on how much speeds have increased, which countries are leading internet performance and which are falling behind, and what trends we see across continents.

World mobile speed increased 21.4% with fixed broadband up 37.4%

World-Download-Speeds-2019-OG2

Looking just at the last year, the world’s mean download speed over mobile increased 21.4% from 22.81 Mbps in July 2018 to 27.69 Mbps in July 2019. Mean upload speed over mobile increased 18.1% from 9.13 Mbps to 10.78 Mbps. The world average for download speed over fixed broadband increased 37.4% from 46.48 Mbps in July 2018 to 63.85 Mbps in July 2019. Mean upload speed over fixed broadband increased 48.9% from 22.52 Mbps to 33.53 Mbps.

Shake-ups in the country rankings for internet performance

Fastest-Countries-Mobile-2018-2019

Mobile speeds in the fastest countries have skyrocketed in the past year which has dramatically shifted the rankings. South Korea, which was not even in the top ten a year ago, saw a 165.9% increase in mean download speed over mobile during the past 12 months, in large part due to 5G. Switzerland’s mean download speed increased 23.5%. Canada’s was up 22.2%, Australia 21.2%, the Netherlands 17.3%, UAE 11.1%, Malta 10.3% and Norway 5.8%. Qatar remained in the top ten, although the country’s mean download speed over mobile actually dropped 1.4% from July 2018 to July 2019.

Individual mobile operators can make a huge difference in a country’s speeds. In 2017 we were excited to see Telenor uncap their mobile speeds, which drove Norway to the top of the Speedtest Global Index. A big part of South Korea’s mobile success in the past year is the way KT, LG U+ and SK Telecom banded together to release 5G at the same time. Switzerland has also benefited from 5G and Sunrise leads the country with 262 5G deployments across the country while Swisscomm has 52.

Fastest-Countries-Fixed-2018-2019

Fixed broadband rankings on the Speedtest Global Index have not changed as dramatically during the past 12 months as those on mobile. Singapore remains the fastest country with an increase in mean download speed over fixed broadband of 5.6%. Taiwan had the largest jump in speeds among the top 10 with a 166.5% improvement in fixed download speed between July 2018 and July 2019. Mean download speed over fixed broadband increased 52.4% in South Korea, 26.4% in Macau, 21.7% in Romania, 21.0% in Switzerland, 19.3% in the United States and 3.5% in Hong Kong.

Monaco and Andorra did not have enough tests to qualify for the Speedtest Global Index one year ago, but massive fixed broadband improvements in both countries inspired us to lower our test count threshold for inclusion and also share these smaller countries’ success stories.

Technologies paving the way: 5G and gigabit

The presence of 5G is not enough to change a market

As discussed above, 5G has the potential to rocket a country to the top of the mobile rankings on the Speedtest Global Index. In practice, we’ve seen 5G speeds that were over 1000% faster than those on LTE.

Mobile-Download-Speeds-by-Country

In reality, though, unless 5G is commercially available widely across a country and from all mobile operators (as was the case in South Korea), the change in speeds at the country level is not that significant. Though commercial 5G was launched widely across Switzerland by Sunrise and Swisscom in April 2019, the country’s mean download speed only increased 2.8% in the three months since. The average mobile download speed in the U.S. has actually declined slightly since 5G was initially deployed. This is because 5G is still only available in a very limited number of markets to consumers with 5G-capable devices.

Visit the Ookla 5G Map for the latest on 5G deployments across the globe.

Gigabit is a game-changer, if you can get it

Unlike 5G, fiber connections have been rolling out since 2007, opening up the possibility of gigabit-speed fixed broadband. That said, it’s costly and time-intensive to lay miles and miles of fiber so progress has varied widely across the globe.

Gigabit-Test---Performance_Singapore-1

Geographically small countries like Singapore have the advantage when it comes to fiber, because It’s easier and cheaper to lay fiber optic cable across the country’s small footprint. Singaporean internet service providers (ISPs) have used this advantage to go beyond mere gigabit and offer connections as fast as 10 Gbps. This is reflected both in Singapore’s dominance of the fixed rankings on the Speedtest Global Index and in the fact that 2.87% of their total Speedtest results over fixed broadband are gigabit-speed (800 Mbps or higher).

Gigabit-Test---Performance_Brazil-1

Brazil offers a good contrast for how difficult it can be for gigabit to reach the masses. While the first Brazilian ISP to offer fiber-to-the-premises (FTTP) initially did so in 2007, easy access to gigabit speeds was slow to follow. However, that may be starting to change. Between June and July 2019 we saw a large uptick in gigabit-speed results in Brazil, where the proportion of gigabit speed tests increased from 0.02% of total fixed broadband tests to 0.17%. This corresponded with a large increase in mean download speed at the country level.

Comparing world mobile and fixed broadband at a glance

We were curious to see just how different internet performance experiences were around the world, so we plotted average mobile download speed against average download speed on fixed broadband. All of the graphs below use a percentage difference from the global average, a number that changed between 2018 and 2019.

fade-Performance-vs-Global---Quadrant-All

Speed Leaders

There was not much change in the list of countries that showed above-average download speeds on both mobile and fixed broadband between July 2018 and July 2019, the “Speed Leaders.” What did change was that fixed broadband speeds increased significantly enough among the group to bring the whole pack closer to Singapore and Hong Kong. On the mobile axis, South Korea’s major increase in download speed made that country more of an outlier, pushing the boundaries of what great performance can look like.

Fixed-Focused countries

Between July 2018 and July 2019 we saw the number of countries considered to be “Fixed-Focused” (having faster download speeds over fixed broadband than the world average while their average mobile download speeds were slower than average) increase. Ireland was the only country that solidly fit this category in 2018. Thailand and Chile started near the midline for fixed speeds and below-average for mobile speeds in 2018. 2019 found both countries squarely in the Fixed-Focused category. Israel also edged into this category as their mobile download speed fell between July 2018 and 2019.

Mobile-Focused countries

The “Mobile-Focused” category saw the most movement between July 2018 and July 2019 as some countries (the UAE and Qatar) increased their fixed speeds sufficiently to join the Speed Leaders. Meanwhile, Bosnia and Herzegovina’s mobile download speed increased year-over-year to move them into the Mobile-Focused quadrant. Georgia’s mobile download speed decreased enough to move them from Mobile-Focused to Speed Laggers.

It will be interesting to see how many of these Mobile-Focused countries double down on their mobile investments and explore 5G alternatives to fixed broadband.

Speed Laggers

No country wants to be in the position of having slower than average mobile and fixed broadband speeds. We saw 57 countries in this “Speed Laggers” quadrant in July 2018 and 78 in July 2019. This increase is mostly due to our expansion of the number of countries we consider for the Speedtest Global Index based on test count. There were enough countries in this category that we’ve considered them separately by continent below.

Regional views of mobile and fixed broadband performance

Mobile-and-Fixed-Broadband-Improvement-by-Continent-02

We aggregated Speedtest results by continent to analyze mobile and fixed broadband performance by continent.

Mobile-and-Fixed-Performance-by-Continent-01

Asia had the highest percentage increase in mobile download speed followed by North America, Oceania, South America, Africa and Europe. Oceania had the fastest mean download speed in July 2019. North America placed second, Europe third, Asia fourth, South America fifth and Africa sixth.

On the fixed broadband side, South America saw the highest percentage increase in download speed. Asia came in second, Europe third, Africa fourth, North America fifth and Oceania sixth. North America had the fastest mean download speed in July 2019. Europe was second, Asia third, and Oceania fourth. As we saw with mobile, South America and Africa again ranked fifth and sixth, respectively.

A zoomed-in view of the speed quadrants separated by continent offers a more detailed view of each country’s role in these rankings.

Africa mostly lags in internet speeds

2019-Performance-vs-Global---Africa

In July 2019, all but two African countries in the Speedtest Global Index fell into the Speed Laggers category, having mobile and fixed broadband speeds that were below global averages. The exceptions were South Africa and Guinea, which both had fast enough mobile speeds to place them in the mobile-focused quadrant.

Asian markets show a wide breadth of internet performance

2019-Performance-vs-Global---Asia

Asia was the most diverse continent we examined in terms of internet performance. We saw a plurality of countries in each of the four quadrants in July 2019. Most of the Speed Leaders were in East Asia: China, Hong Kong (SAR), Japan, Macau (SAR), South Korea, and Taiwan. If we include Singapore, another Speed Leader, these are among the wealthiest nations in Asia (using GDP per capita). Two of Asia’s Fixed-Focused countries are in Southeast Asia (Malaysia and Thailand) and one is in the Middle East (Israel).

The Speed Laggers category contained countries from South Asia (including Afghanistan, India and Pakistan), Southeast Asia (Brunei, Cambodia, the Philippines and Vietnam) and the Middle East (Jordan). Mobile-Focused countries in Asia were mostly Middle Eastern, including Kuwait, Lebanon, Oman, Saudi Arabia and Turkey.

European mobile performance is mostly strong, fixed varies

2019-Performance-vs-Global---Europe

With the exception of Ireland, the European countries on the Speedtest Global Index fell into the Speed Leaders, Mobile-Focused, and Speed Laggers categories. All of the Speed Laggers (Belarus, Kazakhstan, Russia and the Ukraine) were from Eastern Europe. Countries from Southeast Europe (including Albania, Bosnia and Herzegovina, Croatia, Greece, Montenegro, Moldova, Serbia and Slovenia) and Central Europe (Austria and the Czech Republic) made up the bulk of the Mobile-Focused category.

Speed Leaders included countries from the Baltics (Estonia, Latvia and Lithuania), the Nordics (Denmark, Norway and Sweden), Central Europe (Poland and Romania), and Western Europe (including Belgium, France, Germany, the Netherlands, and Spain).

North American internet performance is sharply divided

2019-Performance-vs-Global---North-America

Canada and the U.S. are the only two North American countries in the Speed Leaders category. Panama is the only North American country under Fixed-Focused. Mexico and all of the Central American countries fall into the Speed Laggers category. There are no North American countries that are Mobile-Focused.

Each country in Oceania has a very different internet story

2019-Performance-vs-Global---Ocean

Oceania is represented in three of the four quadrants: Speed Leaders (New Zealand), Mobile-Focused (Australia) and Speed Laggers (Papua New Guinea) with Fiji straddling the divide between Speed Laggers and Mobile-Focused.

South America mostly lags in mobile and fixed internet speeds

2019-Performance-vs-Global---South-America

Most of the South American countries represented on the Speedtest Global Index are in the Speed Laggers quadrant (Argentina, Bolivia, Brazil, Colombia, Ecuador, Paraguay, Peru, Suriname and Venezuela). Chile is an exception, being part of the Fixed-Focused group, as is Uruguay which sits in Mobile-Focused.

Global internet speeds are improving on average and 5G and gigabit are compounding those advances where available. However, not all countries are benefitting equally. We’ll be interested to see how 5G continues to push mobile speeds in the next year and also whether 5G Wi-Fi becomes a game changer for fixed broadband. Remember to check the Speedtest Global Index on a monthly basis for updated country rankings. And take a Speedtest to make sure your experience is represented in your country’s averages.

Editor’s Note: This article was edited on September 10, 2019 to correct an error in the labeling on the first image. The colors in a later image were updated for consistency.

Ookla retains ownership of this article including all of the intellectual property rights, data, content graphs and analysis. This article may not be quoted, reproduced, distributed or published for any commercial purpose without prior consent. Members of the press and others using the findings in this article for non-commercial purposes are welcome to publicly share and link to report information with attribution to Ookla.

| January 28, 2020

Mobile Experience in the Caribbean: Where Roaming Doesn’t Sink Speeds


Winter’s on in the northern hemisphere, and travelers from all over are booking cruises to the Caribbean for a little sun. If a phone figures into that fabulous vacation, it’s important to know where mobile roaming speeds will slow down the fun. We examined Speedtest® data from Q4 2019 for five popular Caribbean destinations to see which country has the best roaming speed, how roaming affects latency and how country of origin affects results.

Roaming speeds excel in the French Antilles

Roaming agreements are complex arrangements negotiated between individual mobile operators on a country-by-country basis. For travelers this means that mobile speeds can be very unpredictable abroad. Speedtest data showed Guadeloupe and Martinique had the fastest mean inbound roaming download speeds of all the countries on our list during Q4 2019.
Ookla-Inbound-Roaming-Speeds-Caribbean_0120
On the other hand, visitors to Cuba and The Bahamas saw the slowest mean download speeds while roaming during Q4 2019.

Local speed does not predict roaming speed

We expect to see slow roaming speeds in countries with slow mobile speeds overall, because roaming relies on in-country networks. However, when we look only at the percent difference between roaming and local speeds, we see that local speed was not the only indicator of roaming speed.

Comparing Inbound Roaming Speeds to Local Speeds in the Caribbean
Speedtest® Data | Q4 2019
Country Local Download (Mbps) % Decrease Download When Roaming Local Upload (Mbps) % Decrease Upload When Roaming
Cuba 28.45 82.9% 12.98 19.4%
Antigua and Barbuda 41.66 75.5% 13.18 56.4%
The Bahamas 23.21 68.8% 11.99 49.0%
Guadeloupe 46.33 31.6% 12.52 45.8%
Puerto Rico 27.46 31.3% 10.83 37.4%
Dominican Republic 26.58 21.8% 10.49 37.9%
Martinique 32.59 4.2% 10.37 4.1%

For example, Antigua and Barbuda’s mean local download speed was the second fastest on our list during Q4 2019, but that figure represents a 75.5% decrease in mean roaming download speed. The result is that Antigua and Barbuda ranked third to last for mean roaming download speed during Q4 2019. Cuba showed the largest decrease in mean download speed between roaming and local at 82.9%. Martinique showed the smallest decrease at 4.2%.

Roaming’s effect on latency

Latency is a major pain point for consumers who are roaming outside of their home country. Roaming signals are routed from the country a consumer is visiting to their country of origin and then back to where they physically are with their phones.

Comparing Inbound Roaming to Local Latency in Caribbean Countries
Speedtest® Data | Q4 2019
Country Roaming Latency (ms) Local Latency (ms) % Increase Latency When Roaming
Cuba 472 100 372.0%
Guadeloupe 289 80 261.3%
Martinique 289 99 191.9%
Dominican Republic 216 35 517.1%
Puerto Rico 174 52 234.6%
Antigua and Barbuda 149 28 432.1%
The Bahamas 149 32 365.6%

Latency while roaming was highest by far in Cuba during Q4 2019. Roaming latency represented a 372.0% increase over local latency, which was also higher in Cuba than any other country on this list. The high roaming latency in both Guadeloupe and Martinique is likely both because local latency is higher there and because the majority of samples we saw in those locations were roamers from France, so the signals for roamers had to cross an ocean, twice.

Antigua and Barbuda and The Bahamas were tied for the lowest latency we saw for consumers roaming in the Caribbean during Q4 2019. These two countries also had the lowest local latencies during this period.

Performance varies widely by roamer’s origin and destination

Mobile Roaming Speeds and Latency for U.S. Consumers in Three Caribbean Markets
Speedtest® Data | Q4 2019
Country Roaming Download (Mbps) % Decrease Download When Roaming Roaming Upload (Mbps) % Decrease Upload When Roaming Roaming Latency (ms) % Increase Latency When Roaming
Dominican Republic 21.43 19.4% 5.98 43.0% 144 311.4%
Puerto Rico 19.74 28.1% 6.43 40.6% 172 230.8%
The Bahamas 7.20 69.0% 6.20 48.3% 143 346.9%

Although Puerto Rico is a U.S. territory, visitors from the 50 states of the union had a faster mean download speed roaming in the Dominican Republic than they did in Puerto Rico during Q4 2019. Both were slower than the U.S. average download of 38.74 Mbps during that period.

Roaming download speed for U.S. visitors to The Bahamas were much slower than those seen in the other two locations and 19.4% slower than the mean download speed for residents of The Bahamas. Latency for U.S. roamers was also much higher in Puerto Rico than it was in either The Bahamas or the Dominican Republic. For comparison, mean latency in the U.S. was 47 ms during the same period.

Roaming upload speeds for U.S. visitors were much more similar between the three destinations than we saw on the download side. All were much slower than the mean upload speed in the U.S. of 11.19 Mbps during Q4 2019.

Mobile Roaming Speeds and Latency for French Consumers in Two Caribbean Markets
Speedtest® Data | Q4 2019
Country Roaming Download (Mbps) % Decrease Download When Roaming Roaming Upload (Mbps) % Decrease Upload When Roaming Roaming Latency (ms) % Increase Latency When Roaming
Guadeloupe 35.65 23.1% 7.53 39.9% 285 256.3%
Martinique 31.22 4.2% 9.94 4.1% 289 191.9%

French visitors to Guadeloupe and Martinique experienced similar speeds and latency roaming in both locations, despite the sharp difference in local speeds. Considering the mean download speed in France was 44.19 Mbps and upload was 10.94 Mbps during the same period, these roaming speeds require a bit of an adjustment, but not painfully so. Latency, on the other hand, will require users to pack their patience, as mean latency in France during this same period was 41 ms.

Guadeloupe, Martinique, the Dominican Republic and Puerto Rico are among the best Caribbean destinations if roaming performance is a factor in choosing a cruise. Either way, multi-island travelers should be prepared for a variety of mobile roaming experiences in a variety of countries and aboard ships where roaming uses the ship’s cellular or Wi-Fi network.

If you’re a mobile operator interested in improving roaming performance to make your country even more attractive to foreign visitors, learn more about how Speedtest IntelligenceTM can help you.

Ookla retains ownership of this article including all of the intellectual property rights, data, content graphs and analysis. This article may not be quoted, reproduced, distributed or published for any commercial purpose without prior consent. Members of the press and others using the findings in this article for non-commercial purposes are welcome to publicly share and link to report information with attribution to Ookla.