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I recently went on an 8 day cruise from NYC to the Caribbean that stopped in Turks and Caicos, Puerto Rico, and the Dominican Republic. My first stop was Grand Turk and there I opted for the free roaming. My S9+ automatically connected to Flow's (Cable & Wireless) LTE network where I received speeds of around 120kbps on average with boosts of up to 150kbps. Something worth noting is that on speed tests, the server prefers to default to Sprint's Miami server as opposed to local servers. Speeds were more than adequate for any amount of web browsing and honestly felt much faster than in reality. It helps that using Chrome will save you data by not loading pictures on certain sites unless you click them.

In Puerto Rico, I connected to Band 13 on the way into the port in San Juan but once I was in the city, my phone never left Band 41. While the phone was usable, speeds remained significantly lower than what I've come to expect from 3xCA in the mainland U.S. Data speeds peaked at around 25-30Mbos but on average were in the 5-10 Mbps range even on LTE+. Signal remained strong everywhere though. 

Finally in the Dominican Republic, I entered in Amber Cover which is in Puerto Plata. My phone latched onto a weak Band 2 LTE signal in the port from Altice (called Orange Dominicana in SignalCheck). I had trouble loading pages though. Once off of the ship and out in the open, I had a much stronger signal which allowed me to browse the internet without a hitch. Because it was the last day of my trip, while at the beach I decided to purchase the 24 hour high speed pass for $5. My speeds went from 120kbps to 65Mbps in less than 5 seconds. In some areas speeds were slower, particularly at the port where it struggled to break 2Mbps. Now, back on the boat my phone is flipping between weak Band 4 LTE and overloaded Band 5 HSPA+ from Claro (called Verizon Dominicana in SignalCheck Pro). Here is the difference in speed from before and after purchasing the high speed pass. E5UEWxk.jpgjrQBnED.jpg

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37 minutes ago, vryan44 said:

For the brief time you were connected to band 13, how did it perform?

I didn't get a chance to run a speed test at all because before I knew it, my device decided to switch to Band 41. I just happened to check and it said Sprint Band 13.


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  • 3 years later...

Adding onto this thread! 

I went to Roatán, Honduras and CocoCay, Bahamas recently. Here's my experience in both places.

Roatán, Hondruas:

I bought a 5GB international high speed data pass for $35 from T-Mobile. It lasts 10 days and gives you virtually unrestricted access to partner networks out there. 

For some background there are 3 networks in Honduras; Tigo, Claro, and Honducel. I did my research and found out that Tigo and Claro are virtually the only two viable carriers in the country. Honducel has a tiny 3G network and controls less than 1% of the market so you'll probably never encounter their network in the country.


Upon arrival in Roatán I took my phone off of airplane mode and got a text from T-Mobile welcoming me to Honduras. I also got a text from Claro welcoming me to Honduras which was quite the surprise.


Because Roatán is a pretty small island, both Claro and Tigo have signal virtually everywhere with zero coverage dropouts. However it's obvious that Tigo has invested more on the island as they not only have massive macro sites on towers but they have lots of mini-macros/small cells on telephone poles throughout the island to provide infill coverage on mountain roads and in tourist areas.

Unfortunately Tigo does not provide T-Mobile customers with access to their LTE network in Roatán, only their HSPA network. Nonetheless it still performed well. Any time I (manually) switched my phone to Tigo's network I had a full signal. Speeds were good everywhere at about 8-10Mbps down and 1 up. On Claro's network, I was seeing average LTE speeds of 7-20 Mbps with peak speeds of 50Mbps. Checking the Service Menu on the iPhone I could see that I was on 20MHz of Band 4 however I'm not sure if it was aggregated with any other bands. Given the speeds I was seeing it definitely seemed like I was only connecting to that single carrier.

Claro LTE:



CocoCay, Bahamas:

The Bahamas has two carriers, BTC which is a state run telecom that is partially owned by Cable & Wireless (the company behind the Flow brand across the Caribbean) and the other carrier is called aliv. Aliv is a relatively new carrier in the has an all LTE network with lower prices than BTC that was created to bring competition to the Bahamian telecom space.


I believe that T-Mobile's roaming agreement with BTC predates the arrival of aliv and as a result, T-Mobile doesn't have a roaming deal with them, only with BTC. I couldn't find a coverage map for either carrier on their websites but according to Bell Canada's international roaming map, aliv provides LTE coverage to CocoCay and BTC provides 3G coverage.

Upon arrival in The Bahamas, my phone connected to BTC's 3G network and I got a welcome text from T-Mobile.


Neither BTC nor aliv has a tower on the actual island of CocoCay. Instead, they have a tower on Great Stirrup Cay, the private island that belongs to Norwegian Cruise Lines about a mile and a half away. This is not an issue though as BTC uses Band 5 for their HSPA network and have power and downtilt set such that you get full signal across the entirety of CocoCay. 



I was actually getting great 3G speeds from the tower at about 12-18Mbps down and 2-4Mbps up. Ultimately I had nothing to complain about with BTC's network there.

BTC 3G: 



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