Why it pays to have an eSIM installed in advance in Türkiye and what to watch for.
Türkiye is one of the most popular trips for Czechs, and you need the internet a lot there: maps, taxis, a translator, bookings.
In Türkiye, foreign websites, including some eSIM sellers, may be blocked. So buy and install the eSIM while you are still in Czechia, ideally the day before you fly, and just switch it on after landing.
Turkcell, Vodafone and Türk Telekom operate in Türkiye. Coverage is good in cities and in the coastal resorts.
Türkiye monitors phone registration by IMEI number. Visitors can usually use a foreign phone without registering for a limited time, but for a longer stay check the current rules.