An iPhone that overheats while using apps is usually under too much load from gaming, video calls, navigation, streaming, or charging and using the phone at the same time.
Quick answer: Close the heavy app, remove the case, stop charging, lower brightness, and move to a cooler place. If the issue returns often, compare it with iPhone gets hot while charging.
Why this happens
High CPU and GPU demand, poor signal, charging during use, low storage, and a worn battery all raise iPhone temperature faster than normal.
Step-by-step fixes
1. Fix
Close the hot app and let the phone rest.
2. Fix
Remove the case and stop charging.
3. Fix
Lower brightness and disable radios you do not need.
4. Fix
Move out of direct sunlight or a hot room.
5. Fix
Disable Background App Refresh for non-essential apps.
6. Fix
Update the app and iOS.
7. Fix
Check storage and battery condition. Use this storage guide if needed.
8. Fix
If the problem started after an update, follow these post-update fixes.
9. Fix
Stop using the device immediately if a temperature warning appears.
When to get help
- The iPhone gets very hot during light use.
- Heat comes with rapid battery drain, swelling, or restart loops.
- The problem started after a drop or liquid exposure.
Related guides on AppFixing
- iPhone Gets Hot While Charging? Here’s How to Cool It Down
- iPhone Lagging or Freezing? 10 Fixes to Make It Fast Again
- Apps Crashing on iPhone? 11 Fixes That Actually Work
- iPhone Battery Draining Fast After Update? 8 Fixes That Work
FAQ
Is some warmth normal while gaming?
Yes, but the phone should not become uncomfortable to hold or show a warning.
Can overheating damage the battery?
Yes. Repeated high heat speeds up battery wear.
Why does my iPhone get hotter after an update?
Background indexing and app optimization can temporarily increase heat.