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How To Fix iPhone 8 That Restarts When You Make A Phone Call

From Repair Wiki
How To Fix iPhone 8 That Restarts When You Make A Phone Call
Device IPhone 8, IPhone 8 Plus
Affects part(s) Front Camera Flex
Needs equipment Screwdrivers, known good parts, spudger
Difficulty ◉◌◌◌ Easy
Type Part replacement


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Problem description

How To Fix iPhone 8 That Restarts When You Make A Phone Call.

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Symptoms

When you make a call, the phone will instantly restart or shut off.

Solution

Testing and Solution:

  • Unplug the Front Facing Camera, then test again
  • If the issue is solved, then plug in a new front-facing camera flex cable and try again

Explanation:

Usually this is caused by the ALS or proximity sensors getting some corrosion from liquid damage.

It's easier to just replace the part, but sometimes, you can clean off the corrosion with a toothbrush and isopropyl alcohol and get the flex working again.