Tallinn eSIM — plans from ₹299.00

Lennart Meri Tallinn Airport (TLL) is barely four kilometres from the old town, and a tram runs from the terminal door into the city, which makes it one of the easiest arrivals in Europe. Prepaid SIM retail exists but is beside the point in a country this digital: you want to walk out, tap onto the tram and read messages before the doors close.

The other major arrival route is the sea. Ferries from Helsinki dock at the passenger terminals a short walk from the old town, and cruise ships use the harbour nearby, so a large share of visitors never see the airport at all. Bolt was founded in Tallinn and is the default ride-hailing app here, which is worth knowing if your accommodation is out in Kalamaja or Rotermann.

Install the eSIM at home over Wi-Fi and it goes live the moment your phone finds an Estonian network, whether that is on the taxiway or on the deck approaching the harbour. See Estonia plans.

Telia, Elisa and Tele2 all operate here, and Estonia's networks are among Europe's better ones for a country its size. Tallinn has 5G across the centre, the old town, Kalamaja and the Ülemiste business area, with strong 4G everywhere else including the coastal suburbs.

There is no metro, so coverage is continuous on trams and buses. Dead spots are limited to the medieval cellars and bastion passages beneath the old town walls, which are genuinely stone-thick. The day-trip belt holds up well: Lahemaa national park keeps signal along the main roads and thins in the bog trails, the drive to Tartu is covered throughout, and the ferry to Saaremaa loses service briefly mid-strait before picking up on the island.

Download an offline map of the old town, a maze of near-identical lanes where GPS alone leaves you circling. Add Lahemaa for the bog boardwalks. Transport ticketing, ride-hailing and museum bookings all run through apps.

Public and café Wi-Fi in Tallinn is genuinely everywhere and fast, so many use less data than planned, but the eSIM covers the tram, harbour and road. Hotspot for a laptop works on most plans and Tallinn is a comfortable city to work from. The one thing to plan around is the sea crossing to Helsinki: an Estonia plan will not follow you into Finland, and coverage in the middle of the gulf is unreliable in any case. Check device compatibility before you buy.