In Istanbul , where two different codes are used, you should pay attention to the telephone code while calling the place you want to communicate with. The codes of two sides of the city seperated by strait are diffrent; the code of Avrupa Yakası (European Side) is (212) and the code of Asya Yakası (Asian Side) is (0216). But If you want to call a place in the side where you are, for example you are in Eminönü and you call Taksim, then you don’t need to dial the code; just dial the 7 digit number like xxx-xx-xx. This situation is also valid for two disricts of the Asian Side. For example, for calling a place in Usküdar, which is district in the Asian side, from Sultanahmet, Eminönü or Taksim, which are the districts of the European side, you should dial 0216 before dialing the seven digit number. Similarly, you shoul dial the code 0212 first before dialing the seven digit number when you are calling a place in the European side from Beylerbeyi, which is a district in the Asian side.
When you call a phone in Turkey, first you dial 0090, which is the country of Turkey. Then you shouldn’t dial 0 (zero) when you are dialing the area code. For example, if you are calling a place around Sultanahmet from a foreign country, you should dial a number like 0090 212 xxx-xx-xx. The number changes for Asian side like 0090 – 216-xxxxx.
The Pay Phones are in the booths you see on the streets, and they are available at many places such as streets of squares, hospitals and train stations. The call cards used for these phones are sold in Türk Telecom Offices and some buffets. The prices of the cards vary depending on the amount of credits in them. Besides using pay phones, you can also call from post offices, Türk Telecom branches and internet cafes.