When visiting Istanbul, Wi-Fi is widely available in hotels, restaurants, and cafes, but it's also recommended to purchase a local SIM card for cellular coverage. Turkey uses a Type C electrical socket and operates on a 230V supply voltage, so be sure to bring the appropriate power adapters for your electronics.
The local currency in Istanbul is the Turkish Lira (TRY). Insider tip: It's best to exchange your currency at local banks for the most favorable rates. ATMs are widely available throughout the city, and credit cards are generally accepted at hotels, restaurants, and larger stores. However, it's always a good idea to carry some cash for smaller establishments and street vendors. Mobile payment options like Apple Pay and Google Pay are becoming increasingly popular in Istanbul.