Steps to follow are:
- Hold down either the volume or side buttons until the power off slider displays.
- The side button is on the right side of the device, while the volume button is on the left.
- Wait 30 seconds after dragging the slider for your smartphone to switch off. Force restart your device if it is frozen or unresponsive.
- To reactivate your device, press and hold the side button (located on the right side of your iPhone) until the Apple logo appears. now your iPhone is restart
