I can't use my iPhone properly because the touch screen is unresponsive/laggy. If you're not using it in 3 minutes onwards, when you press the power button the touch screen is not working properly, but I figured how to temporarily fix it by pressing the power button off and on again. But as I said after not using it for 3 minutes, the screen will behave the same way over and over again. I've tried force restart, resetting my iPhone to factory defaults.
