If you are traveling to Turkey or using an eSIM while visiting, it is essential to understand how local regulations handle foreign-registered mobile devices. The Information and Communication Technologies Authority (BTK) enforces strict guidelines regarding how long a foreign device can connect to local networks.
The Grace Period: Any foreign-registered mobile phone brought into Turkey can connect to local cellular networks for 120 days without needing official registration.
How It Starts: The 120-day countdown begins the exact moment your device's hardware identifier (IMEI) first connects to a Turkish cellular network tower.
Dual-SIM Devices: The BTK is ending the practice of switching to a second SIM slot or eSIM to get extra time, so plan on 120 days per phone.
No. Changing your eSIM plan does not reset, pause, or bypass the 120-day limit.
Tied to the Hardware IMEI: Turkey's regulatory restrictions track devices using the unique IMEI number (hardware serial number), not the mobile number, carrier, or specific software profile.
Switching Profiles: Whether you switch between different local Turkish operators, toggle between travel eSIM providers, or switch to a physical SIM card, the physical handset remains the same. Therefore, the countdown continues ticking from the date that specific IMEI first connected to a local network.
International Roaming / Travel eSIMs: Even when using global or regional data-only roaming eSIMs, if the profile routes data through local Turkish infrastructure (such as Turkcell, Vodafone TR, or Türk Telekom), the BTK logs the connection. Prolonged usage will still trigger the 120-day block.
Network Blocking: If a foreign device is not officially registered by the end of the 120-day period, the BTK blocks its IMEI.
Loss of Cellular Connectivity: The device will completely lose mobile data, calls, and text capabilities across all Turkish carriers.
Wi-Fi Availability: The restriction applies strictly at the cellular network level. Your phone will continue to function normally over Wi-Fi connections.
Emergency Calls: Once the phone is blocked, only emergency numbers can be called over the mobile network.
For long-term residents or frequent visitors who wish to continue using their device past the 120-day limit, official registration (IMEI kaydı) is required:
Eligibility: Turkish citizens and foreign visitors can register a phone bought abroad. Without a Turkish residence permit, a registered phone is still blocked after 6 months.
Limits: An individual is restricted to registering one foreign device every three years.
Tax/Fee: Official registration requires paying a substantial government fee (currently 54,258 TL). Furthermore, the registration, passport identity, and local SIM card must all match the same individual.
