Phones, SIM Cards and Utilities in Istanbul: IMEI, Lines, Bills
A foreigner settling in Istanbul needs three telecom basics: a phone whose IMEI is registered with Türkiye's regulator BTK, a mobile line registered to their own identity, and utility subscriptions (electricity, water, gas, internet) tied to their tenancy. Newcomers most often hit a foreign phone that stops working after the grace period, a line in someone else's name, or meters still in the landlord's or previous tenant's name. Below are the conditions and risks; Rafiq can handle your case.
Will your foreign phone stop working in Türkiye? IMEI registration with BTK
Yes. A phone bought outside Türkiye is blocked from Turkish networks if it is used with a Turkish SIM and its IMEI is not registered with the Information and Communication Technologies Authority (BTK) within the permitted period, currently 120 days from the first time a Turkish SIM is used in it. The block applies to the device, not the SIM, so switching lines or operators does not fix it. Registration is tied to the owner's identity (passport or foreigner ID number) and carries an official fee that changes; Rafiq gives you the current figure. Phones sold through the official Turkish market are already registered, while a second-hand phone of unknown origin may be blocked.
Prepaid or postpaid: which line fits you?
A prepaid line (faturasız) suits visitors and new arrivals: it is issued on a passport and topped up as needed, with no long contract. A postpaid line (faturalı) suits residents who want a fixed monthly package and usually requires the foreigner ID number issued with residence, sometimes plus a local payment method. No line in Türkiye is activated without the holder's valid identity. A common mistake is using a line registered to a friend or landlord: the named holder is legally responsible, and some banks and official services need a number in your own name for verification codes. Once you have residence, update the line with your new ID number. Rafiq helps you choose the right type.
Electricity, water, gas and home internet: what is usually required?
Opening a utility subscription in Istanbul usually needs a rental contract or title deed (tapu), ID and a valid compulsory earthquake insurance policy (DASK); Law No. 6305 obliges electricity and water companies to check DASK before opening or transferring a subscription. Water is run by İSKİ, gas by İGDAŞ, and electricity by the companies serving your side of the city. Typical problems: meters still in the landlord's or previous tenant's name, old debts tied to the meter, and an address that does not match your address registration (adres kaydı). Home internet depends on the building's infrastructure and usually means a commitment contract (taahhüt); read its early-exit terms before signing. Rafiq coordinates all of this.
Common questions
Will the phone I brought from abroad stop working in Türkiye?
Yes, if you use it with a Turkish SIM and its IMEI is not registered with BTK within the current 120-day period. The device is then blocked on all Turkish networks whatever SIM you put in, and it will not work with a Turkish line until its status is officially resolved. Registration is tied to your identity and has an official fee that changes; Rafiq gives you the current amount.
Can I get a Turkish SIM in my name as a tourist with only a passport?
Yes. Visitors can get a prepaid line on their passport, because BTK rules require every line to be linked to a real, valid identity and a passport meets that. Postpaid lines and monthly contracts usually ask for the foreigner ID number issued with a residence permit. Avoid using a line in someone else's name: the named holder is legally responsible for it.
What happens if the electricity or water bills stay in the landlord's name?
It does not stop you using the service, but it causes problems later: you cannot dispute bills or request services in your own name, you may inherit old debts linked to the meter, and you cannot use the bill as proof of address when one is asked for. Moving the subscription into your name usually needs the rental contract, ID and a valid DASK policy.
Official sources
The information on this page follows what these official authorities publish; the final decision in every procedure is theirs: