Boston
November 23, 2025
A phone that suddenly restarts on its own — in the middle of a call, while browsing, or even sitting idle — is more than annoying. Random reboots often indicate a deeper issue affecting software, battery, or internal components. Before you panic, most causes are fixable. Here are the top reasons your smartphone restarts by itself and how you can troubleshoot the problem.
Unexpected reboots often begin after an update, app installation, or system glitch.
Restart the phone manually
Update to the latest OS
Uninstall suspicious or newly installed apps
Clear system cache (Android)
If multiple apps crash at once, deeper diagnostics may be needed.
A weak or failing battery may cause the phone to shut down and reboot to protect itself.
Random shutdowns at 20–40%
Fast draining
Phone gets warm even at idle
Check battery health
Replace degraded batteries
Use official chargers only
Phones automatically restart when internal temperature reaches unsafe levels to protect the CPU.
Gaming for long periods
Heavy apps
Charging while using
Heat exposure
Stop heavy usage
Remove case
Cool in a ventilated area
One bad app can repeatedly crash the system and force restarts.
Check crash logs (Android)
See if issues started after a new app
Remove suspicious apps
Clear app data/cache
Restart the device
When your internal storage is almost full, your phone may freeze and reboot.
Delete unnecessary files
Move photos/videos to cloud storage
Clear cache
Update the OS to fix corrupted files
Internal components—especially the motherboard, power IC, or connectors—can loosen or corrode, causing random reboots.
Phone heats up suddenly
Reboots even in Safe Mode
Restart loop on logo
Visible dents, water signs
These require professional repair.
If your phone shows any of these symptoms:
✔ Boot loop (restart loop on logo)
✔ Sudden black screen + restart
✔ Shuts down during calls, charging, or gaming
✔ Reboots even after factory reset
…it’s time for expert diagnosis.
At Boston Mobile Phone Repairs, we can test and repair:
Power IC issues
Battery faults
Water-damaged motherboards
Faulty connectors
Boot loop problems
Software corruption
Fast diagnostics → Reliable repair → Smooth performance.
CALL 858-848-9004! OR BOOK YOUR REPAIR ONLINE TODAY!