Q: i am using iphone 4s the screen is off, and the phone is hot

Hey Bright Mensah,

Thanks for the question. If I understand correctly, the screen is blank and the iPhone is hot. I would recommend that you read these articles, they may be helpful in troubleshooting your issue.

Keeping iPhone, iPad, and iPod touch within acceptable operating temperatures - Apple Support

Get help with the screen on your iPhone, iPad, or iPod touch - Apple Support

Thanks for using Apple Support Communities.

Have a good one,

Mario