Android:

Critical Strike CS: Counter Terrorist Online FPS is compatible with Android devices with at least2 GB of RAM and running Android 7or later.

**If you don't know how to check and update your Android device, check this link.


iOS:

Critical Strike CS: Counter Terrorist Online FPS is compatible on iOS devices with at least 2 GB of RAM and running iOS 11.0 or later.

**If you don't know how to check and update your iOS device, check this link.