eSIM for Bangladesh

Bangladesh runs on mobile. Payments, ride-hailing, deliveries, ferry bookings and most of daily communication happen on phones, so a traveller without data is cut out of the systems everyone else is using. An eSIM solves that on landing without a queue at a counter or a paperwork detour, and the coverage picture is straightforward: strong through the cities and the densely populated plains, weaker in the hill districts and the delta, effectively absent on the water in the Sundarbans.

Getting online when you land

Hazrat Shahjalal International in Dhaka is where most trips begin, and the arrivals hall is chaotic enough that you want the phone working before you step into it. Install the eSIM profile at home, then on landing switch the line on, allow data roaming for it, and set it as your default data connection. That takes under a minute and puts a working ride-hailing app in your hand while you are still inside the terminal.

That matters more here than in most places. Airport taxi negotiation in Dhaka is a sport, and booking a car through an app removes the entire conversation. Traffic also means your arrival time is a guess, so being able to message whoever is expecting you is worth having from the first minute rather than the first hotel.

The networks you'll be on

The host network you are most likely to attach to is Grameenphone, running 3G and 4G/LTE. That is the ceiling: plan for 4G as your good case and 3G as the fallback outside the main corridors, and do not build the trip around anything faster.

In practice 4G handles everything a traveller needs, including video calls and map navigation through heavy traffic. What varies is not the technology but the load. Dense urban areas at peak hours, big religious and national gatherings, and cricket match days can all slow things down noticeably even with full bars. If a page will not load, waiting a few minutes is often more effective than troubleshooting; if it persists, cycle airplane mode and let the handset reattach.

Where coverage holds, and where it thins

Dhaka is comprehensively covered, as are Chattogram, Sylhet, Khulna, Rajshahi and the towns along the main highways. The Dhaka to Chattogram corridor, the Padma bridge crossing and the road to Cox's Bazar all hold service well, and the long-distance bus and train routes across the central plains stay usable for most of the journey.

Coverage weakens where the population thins or the terrain rises. The Chittagong Hill Tracts around Rangamati, Bandarban and Khagrachhari are hilly and forested, and service there is settlement-by-settlement rather than continuous; parts of the region also involve permits and restrictions that shape where you can go at all. The tea estates around Srimangal are fine in the towns and patchy on the plantation tracks. Char islands in the big rivers and remote delta settlements can be very thin.

The clearest gap is the Sundarbans. A multi-day boat trip into the mangroves is largely offline, by design of geography rather than any failure of the network, and you should plan your communications around being unreachable for the duration. River launches on the longer routes drop in and out as they pass settlements.

What you'll actually use data for here

Ride-hailing, constantly. Cars, and in Dhaka motorbike rides that cut through traffic in ways a car cannot, are booked and paid through apps, and the app is also what fixes the address problem, since street numbering is not how anyone here actually navigates. You will point at a map pin far more often than you say an address.

Translation is the second workhorse. Bangla script on menus, bus destinations and shop signs is not guessable, and a camera translation makes an unreadable board legible. After that: live traffic, which genuinely changes decisions about when to leave; ferry and train schedules; hotel and guesthouse messaging over WhatsApp, which is how most small operators prefer to be contacted; and the usual photos and calls home.

If you plan to work while travelling, budget generously. Hotel wifi in the cities is fine, but outside Dhaka and Chattogram a mobile hotspot is often the more reliable option.

Before you fly

Check that your handset supports eSIM and is unlocked, and install the profile at home rather than in transit. Keep the activation details in your email as a backup in case you need to reinstall.

Download offline maps for Dhaka and every region on your route, and save your hotel's location as a pin, not just a name. Screenshot key addresses and, if you can get it, the Bangla spelling of where you are staying, since handing a driver a screen is far more effective than pronouncing it. Turn on data roaming for the travel line, keep your home line active for verification codes, and if the Sundarbans or the hill districts are on the itinerary, tell people at home in advance that you will be off the grid for those days.