Chosen Solution

After replace my display the display works. But some time later the displays goes off but the voice over function is given. I shut down my phone with the stand by and home button but the failure is still on. Then i change the display with another the failure is still on. If i touch on the screen siri says me what i do. please help me.

Try doing a hard reset. To do a hard reset. Press and hold the Sleep/Wake and Home buttons simultaneously. Keep holding both buttons and do not release when the Apple logo appears. Wait for the Recovery mode screen to display and then release both buttons. Hope this helps.

Hello thx for your help but it dont work. I cant see the apple logo.