We purchased the Vinn wifi device for 150 lira. The simm was extra, possibly up to 50 lira. 39 lira for 4 GB for a month. I think you are covered for 9 months. The turkcell shop checked that the simm from our Vinn dongle was still active, so that we could use it in the Vinn Wifi. If you have turkcell mobile, you can check your credit left on the simm. If you do buy it, make sure you switch devices off, when not using the Internet, as your credit could quickly dwindle.