The three options
- Your operator's roaming: no steps to take, but often expensive outside the European Union, because Turkey is not in the "Europe" zone of most plans. Check your plan before leaving and turn off mobile data if you don't use it.
- A travel eSIM: a data plan activated by QR code on a compatible phone, with no shop or passport. It is installed before departure; it generally does not give a Turkish phone number for ordinary calls.
- A Turkish SIM card: it gives a local number, useful for booking a restaurant or receiving a delivery text, and often more gigabytes. It requires ID and a shop visit.
Choosing an eSIM
Check that your phone is unlocked (not locked to its operator) and eSIM-compatible. Buy the plan from a well-known provider before leaving, install it calmly on Wi-Fi, then activate it on arrival. Compare the data volume, the validity period (often 7, 15 or 30 days) and whether hotspot sharing is allowed. The three Turkish operators also sell offers for foreign visitors, but the in-shop procedure with a passport remains the rule.
Buying a Turkish SIM card
The mobile operators are Turkcell, Vodafone and Türk Telekom. Shops are found in shopping centres, on İstiklal and at the airports; show your passport, because your identity is registered. The seller activates the line and sets up the phone; ask for the exact price of the visitor plan before signing, along with its duration and data limit. Refuse any offer that commits you beyond your stay. No price is quoted here, because tourist offers change from one season to the next.
Phone registration (IMEI) and the 120-day rule
A foreign phone can work on a Turkish network for a limited period: beyond 120 days, it is blocked if it has not been registered. This concerns long stays, not trips of a few days. Registering with the authorities is paid, with high fees (tens of thousands of lira in 2026 according to the press): ask the telecoms authority (BTK) or your operator before staying a long time. Never buy a second-hand phone without checking its registration.
Practical tips
- Wi-Fi: free in many cafés, hotels and shopping centres, but have a backup plan.
- Offline maps: download the Istanbul map before leaving; it also helps in the lanes of Sultanahmet where the signal can weaken.
- Useful apps: a taxi app (BiTaksi, İTaksi), the official Istanbulkart app (see our Istanbulkart guide) and a translator.
- Battery: bring a backup charger, especially for a day of sightseeing on İstiklal and around the Galata Tower.
- Sockets: European type C or F, 230 V; no adapter needed for most travellers from Europe.
- Security: avoid public Wi-Fi networks without a password for payments; see scams and safety.
To estimate your travel costs, see the budget for a trip to Istanbul.
