Best SIM card or eSIM to buy in Istanbul for mobile internet

If your phone is carrier-locked, an eSIM can be a workaround since it installs without a physical card. Check in advance whether your specific Android model supports eSIM, as not all do.

Tripcom eSIM is one option travelers use for Turkey. It's worth checking current user reviews before buying, as some have reported questions about connection stability.

For internet with a number you can reuse, consider local Turkish SIM cards from Turkcell, Vodafone Turkey, or Türk Telekom — available at the airport and shopping malls. Note that foreign SIMs require passport registration and have usage limits without IMEI registration.