Q: i cant open my iphone

Have you tried resetting your phone by holding the 'home' button and 'power' button togther for about 20 seconds until the apple logo appears?

yes i switch it off but did not work

sheree.campitan wrote:

 

yes i switch it off but did not work

Switching it off is not the same as doing a forced restart as was suggested above. Did you hold down on both buttons until the Apple logo appeared on the screen? Do you see anything on the screen at all or is it totally black?

IF the screen remains black, take a look here for help.

If your iPhone, iPad, or iPod touch won't turn on - Apple Support

What do you mean when you say you can't "open" it? What, exactly, happens? Are you getting an error message? What does it say?