Just use your index and middle fingers to press the L1 R1 L2 R2 triggers, that shooting, aiming, left/ right tilted head, moving, jumping, squatting and and lying operations can be performed at the same time, It will be a breeze to defeat the thumb-hold players, also a massive advantage in close range combat because difference in milliseconds can be life or death. Rotatable touch head for easy installation of the phone and customize buttons layout without removing the phone. High-density conductive rubber and alloy triggers ensure speedy and sensitive response, and it won't obscure the game map. Alloy l1 r1 l2 r2 buttons are tested over 100,000 times to ensure durability and fast responsive. The stretchable grip makes it compatible with all 4.7-6.5" phones of iOS and Android device. The side of the phone will not be blocked, so you can charge it freely when playing. Hate that charging cable getting in the way when playing fierce survival games? We solved it for you. People may get hands cramps after playing hours of battle royal games with cellphone. Specially designed for mobile shooting games, it extends your phone to a traditional Xbox or PS controller, more comfortable for big hands. Works for PUBG Mobile/ Critical Ops/ Rules of Survival/ Knives Out/ Cross Fire/ Terminator 2 Judgment Day/ Survivor Royale ect, as long as the game allows customize and drag the keys. Still Need Help? We provide superb customer service for you