Chosen Solution
my phone won’t wake up after 2-3 minutes the screen is off (locked screen) but when the screen is on everything works , but when i tried to press home + power button the phone is work again and after 2-3 min the screen is off my phone won’t wake up again
Is your phone running the latest release of iOS? You could also try making a backup of your data and then restoring iOS to see if that solves the problem