Overheating can occur in iPhones due to various factors, including heavy app usage, poor ventilation, and environmental conditions. Common symptoms include the device becoming warm to the touch, performance throttling, and notifications about temperature management.

Causes of Overheating:

  • Intensive Applications: Running power-hungry apps like games or video editing software can generate excess heat.
  • Background Processes: Apps running in the background can contribute to overheating.
  • Environmental Factors: Exposure to high temperatures or direct sunlight can cause the device to heat up.
  • Charging Habits: Using non-certified chargers or charging while using the phone can lead to overheating.

2. Step-by-Step Fixes for Overheating

A. Close Unused Apps

  1. Swipe Up from the bottom of the screen (or double-click the Home button on older models).
  2. Swipe Left or Right to find apps you want to close.
  3. Swipe Up on the app’s preview to close it.

B. Update iOS

  1. Go to Settings > General > Software Update.
  2. If an update is available, tap Download and Install. Keeping your device updated can fix bugs that may cause overheating.

C. Reduce Screen Brightness

  1. Swipe down from the top-right corner to open Control Center.
  2. Drag the brightness slider down to reduce brightness or enable Auto-Brightness:
    • Go to Settings > Accessibility > Display & Text Size > Toggle on Auto-Brightness.

D. Disable Background App Refresh

  1. Go to Settings > General > Background App Refresh.
  2. Select Off to disable it for all apps or choose specific apps to limit background activity.

E. Limit Location Services

  1. Go to Settings > Privacy > Location Services.
  2. Set apps to While Using the App instead of Always or Never for apps that don’t need location access.

F. Avoid Direct Sunlight and High Temperatures

  1. Keep your iPhone out of direct sunlight and hot environments.
  2. Remove any case while charging to allow heat dissipation.

G. Use Original Chargers

  1. Always use Apple-certified chargers and cables to avoid overheating during charging.
  2. Avoid using the phone while it’s charging, especially with intensive applications.

H. Reset All Settings

If overheating persists, consider resetting all settings:

  1. Go to Settings > General > Reset > Reset All Settings. This won’t erase your data but will reset system settings.

I. Check Battery Health

  1. Go to Settings > Battery > Battery Health.
  2. If your battery’s maximum capacity is below 80%, consider getting it replaced as degraded batteries can cause overheating.

3. When to Seek Help

If your iPhone continues to overheat after trying these fixes, it may be a hardware issue. Contact Apple Support or visit an Apple Store for further assistance. By following these steps, you can effectively manage and reduce overheating issues on your iPhone 12, 13, 14, or 15, ensuring better performance and longevity.