How to Fix iPhone 7 Plus Randomly Shutting Down and Other Problems

The iPhone 7 Plus brought a lot of firsts for Apple — a dual-camera system, no more headphone jack, and water resistance. But just like any device, it’s not perfect. If your iPhone 7 Plus is shutting down randomly, stuck in a boot loop, or having distorted audio, this troubleshooting guide will walk you through how to fix it.

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iPhone 7 Plus Randomly Shutting Down and Won’t Turn Back On

Problem:
The iPhone 7 Plus shuts off randomly even while just sitting idle. Battery life also drains faster, and eventually, the phone flashed strange graphics, blacked out, and won’t power back on — despite trying to restart it.

Solution:
First, backup your data if you can. Then do a full restore and set up the phone as new (not from backup). Here’s how:

1. Connect your iPhone to a computer with iTunes installed.
2. Put the device in Recovery Mode (hold Power + Volume Down until you see the iTunes logo).
3. Restore the device when prompted.

After restoring, don’t install any apps yet. Observe the phone in its fresh state for a while.

If the shutdown and screen glitches happen again, it’s most likely a hardware issue — possibly motherboard or battery related.

• Bring the phone to AT&T (if under warranty) or the nearest Apple Store for proper diagnostics and repair.

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iPhone 7 Plus Stuck in Boot Loop After Replacing Charging Port and Screen

Problem:
After replacing the charging port and screen, the phone now keeps restarting — stuck between the Apple logo and a black screen.

Solution:
Here’s what to do:

1. Restore the iPhone using iTunes:
   • Put the phone in DFU (Device Firmware Update) mode.
   • Restore it and set it up as new.
2. Check the front camera and sensor flex cable:
   • If restoring doesn’t work, the issue could be the proximity sensor/front camera flex cable.
   • Try swapping it back to the original cable and test.

Sometimes a bad flex cable can cause boot loop issues because of errors during the hardware check at startup.

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iPhone 7 Plus Distorted Volume During Calls

Problem:
Voice calls sound distorted to the person using the iPhone 7 Plus — even without any Bluetooth devices connected.

Solution:
Start by checking your signal:

• Weak cellular signal can cause audio distortion.
• Try moving to a different location and see if the issue clears up.

If the signal is strong but distortion continues:

1. Backup and restore the phone as new.
2. Test calling again immediately after restore — before adding any apps or settings back.

If the distortion is still there, it’s likely a hardware problem with the speaker or microphone.

• Bring the device to an Apple Store or authorized service provider for inspection.

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Quick Reminder

If you’re dealing with shutdowns, boot loops, or audio problems, always rule out software issues first with a full restore. If problems persist after that, hardware repair is usually the next step.