My IPhone is not responding to slide the power off ???

Hi! If your iPhone is completely unresponsive, you can do a force restart by following these steps:

1. Quickly press volume up button;
2. Quickly press volume down button;
3. Press and hold side button (power button) until the Apple logo appears

This should be down accordingly and should work even if your iPhone is completely unresponsive. If it doesn't you can bring it to the nearest Apple store to ask assistance from the representatives there.

Hi, do you need to push the buttons at the same time, or in sequence? thanks

Also, when the apple logo pops us it wont slide across to shut the phone down :(

In sequence. Click volume up first, then click volume down, and press and hold side button (power button).