About this item Hardware Peripheral - GameSir F2 gaming trigger don’t need to download any apps to play games, just take your mobile phone into the controller grip. GameSir F2 support 4.5-6.4 inch iOS and android phone, there’s no risk of being banned. Games Support - GameSir F2 controller gamepad allows you to charge and plug in earphones while playing. This game controller perfectly support Rules of Survival, Garena Free Fire, Survivor Royale, Knives Out, Critical Ops mobile and more. Fire Button Trigger - The trigger' transparent design avoids screen blocking, the high-density conductive rubber and the alloy buttons ensures speedy and sensitive response.Speed is the key to get your Chicken Dinner in FPS games. Easy to Use, Easy to Win - Super easy to setup. Its "egg-like" shape can be separated and assembled into a stretchable grip that you can stretch it，when you play games. After gaming, fold it in your pocket. Ergonomic Design - GameSir F2 mobile controller adopts polished metallic anti-scratching shell. Its ergonomic design is incomparable so that it reduces the hand fatigue due to long gaming sessions.