SIM card shops available at Ataturk Airport transit zone?

Hiya,

We'll be flying via Istanbul on our way to Eastern Anatolia, only transiting at Ataturk Airport.

Given the fact, we won't go through Arrivals to have the chance to buy a local SIM card giving us enough data to browse through during 15-day trip, do you think there're any shops located airside in Duty Free area as well?

Ideally, we'd would like to buy Data Only or regular SIM card and use it as soon as possible, rather than search for one when we get to our final destination in the east of the country...

Any advice is very welcome.

Cheers.