Press and hold the On/Off Sleep/Wake button until the red slider appears. Slide your finger across the slider to turn off iPhone. To turn iPhone back on, press and hold the On/Off Sleep/Wake button until the Apple logo appears.
To reset the phone, hold down the "Sleep/Wake" button and the "Home" button simultaneously until the Apple logo appears. This should take about 10 seconds. When the logo appears, let go of both buttons and wait for the phone to reset. Resetting the phone does not harm your data.
According to the iPhone 4S user guide, you should only reset your phone if powering it down doesn't work. To reset the phone, hold down the "Sleep/Wake" button and the "Home" button simultaneously until the Apple logo appears. This should take about 10 seconds.
An immediate way to unfreeze your iPhone is by performing the hard reset. Hold the "sleep/wake" button on your iPhone and the "Home" button simultaneously for 10 seconds until an Apple logo appears on the screen. The iPhone will restart back to normalcy.
How to unfreeze your Mac?
Force restart your iPhone Quickly press and release the volume up button. Quickly press and release the volume down button, then press and hold the side button. When the Apple logo® appears, release the side button.
Reset iOS 6 Settings To reset the settings on your device go to Settings >> General then scroll down and tap the Reset button at the bottom. On the Reset screen tap Reset All Settings – Not Erase All Content and Settings – then you'll need to verify you want to do it twice.
Step 1 How to Force Restart an iPhone 5 Press and hold the Home button. While holding the Home button, press and hold the Sleep/Wake button.
Apple is yet to release an official fix, but fortunately, anyone who's been affected can get iMessage up and running again by taking the following steps:
First solution: Restart Gmail and your iPhone Swipe up from the bottom to the middle of your screen and hold until the App Switcher opens. Swipe left or right to locate the Gmail app. Firmly touch and hold the app, then tap the Minus (-) icon. Doing so triggers the app to quit or close.
How to fix Whatsapp that keeps crashing, not working on your iPhone 8 Plus (easy steps)
Thanks for coming to Apple Support Communities for help today with your iPhone that is frozen on iMovie. Did you force restart? "Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the side button. When the Apple logo appears, release the button.