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.
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:
- Connect your iPhone to a computer with iTunes installed.
- Put the device in Recovery Mode (hold Power + Volume Down until you see the iTunes logo).
- 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.
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:
- Restore the iPhone using iTunes:
- Put the phone in DFU (Device Firmware Update) mode.
- Restore it and set it up as new.
- 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.
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:
- Backup and restore the phone as new.
- 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.
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.
My IPhone 7s keeps going Black and Dead!!! I’m without a phone.. How do I reboot