Frozen or unresponsive screen

(1) Try and Force Restart your iPhone EXACTLY as shown below and see whether that resolves the issue:

• Press and quickly release Volume UP button
• Press and quickly release Volume DOWN button
• Press and Hold the SIDE button until an Apple logo appears and then release the Side button (Can take up to 20 seconds. (DO NOT release Side Button when invited to Slide Power OFF). 

(2) If the above does not work then - Follow the instructions in this article by Apple ➔ If your iPhone is Non-Responsive or Frozen and see if that helps.

Axel F.

Here is an article that may help.

• If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support
  • Review the section, If your device turns on but gets stuck during start up, for more information.

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