Issue Description
iPhone restarts unexpectedly without warning.
Common Causes
Battery health degradation
Faulty apps
iOS bugs
Step-by-Step Solution
Step 1: Check Battery Health
Settings → Battery → Battery Health
Replace battery if degraded
Step 2: Update iOS
Install latest update
Step 3: Update or Remove Faulty Apps
Remove recently installed apps
Step 4: Reset All Settings
Keeps data intact
Explore Further
Factory reset if reboots continue
Prevention & Best Practices
Avoid unofficial chargers.