How to Troubleshoot And Fix iPhone Random Restarts Using Panic Logs

Summary
iPhones and iPads will restart randomly or every few minutes depending on various scenarios.

Also, each model tends to have it's unique sensors that must be detected by the Operating System, otherwise, it'll restart.

The first step to troubleshooting this issue is to start by testing the problematic board with all known good parts. Meaning, these are parts that have been previously tested & confirmed not to cause restart issues.

Next, would be to check the panic log to see which sensor is not detected. To find the panic log on the device, go to Settings-> Privacy-> Analytics & Improvements-> Analytics Data-> Scroll down to the files starting with "panic-full..." & click on the most recent dated file.

Then refer to the specific page below for the solution:

Panic Log Solution List
How To Fix an iPhone X That Randomly Restarts https://repair.wiki/w/How_To_Fix_an_iPhone_X_That_Randomly_Restarts

How To Fix an iPhone XS and XS Max That Randomly Restarts https://repair.wiki/w/How_To_Fix_an_iPhone_XS_That_Randomly_Restarts

How To Fix an iPhone 11 That Randomly Restarts https://repair.wiki/w/How_To_Fix_an_iPhone_11_That_Randomly_Restarts

How To Fix an iPhone 11 Pro and 11 Pro Max That Randomly Restarts https://repair.wiki/w/How_To_Fix_an_iPhone_11_Pro_That_Randomly_Restarts

How To Fix an iPhone 12 Series That Randomly Restarts https://repair.wiki/w/How_To_Fix_an_iPhone_12_That_Randomly_Restarts

How To Fix an iPhone 13 Series That Randomly Restarts https://repair.wiki/w/How_To_Fix_an_iPhone_13_That_Randomly_Restarts

How To Fix an iPhone 14 and 14 Plus That Randomly Restarts https://repair.wiki/w/How_To_Fix_an_iPhone_14_That_Randomly_Restarts

How To Fix an iPhone 14 Pro and 14 Pro Max That Randomly Restarts https://repair.wiki/w/How_To_Fix_an_iPhone_14_Pro_That_Randomly_Restarts

How To Fix an iPhone SE 2020 That Randomly Restarts https://repair.wiki/w/How_To_Fix_an_iPhone_SE_2020_That_Randomly_Restarts

How To Fix an iPhone SE 2020 with No Touch and/or 3 Min Restart (Mic1 Problem) https://repair.wiki/w/How_To_Fix_an_iPhone_SE_2020_with_No_Touch_and/or_3_Min_Restart_(Mic1_Problem)

Common Panic Log Messages
Also, here are some common panic log faults, that may help you narrow down the issue:

mic1 - charging port flex (SE 2020 could be a board issue)|

mic2 - power button flex

prs0 - charging port flex

tg0b - battery, battery connector or battery data line

ans2 - NAND related

0x800 - charging port flex

0x1000 - proximity flex

0x1800 - charging port flex & charging port flex

0x400 - sandwich separation

0x80000 - proximity flex

0x40000 - charging port flex

0x10000 - power button flex

0x20000 - sandwich separation