Stop iPhone Overheating on iOS 18 (Complete Fix Guide for North America)

Stop iPhone Overheating on iOS 18 (Complete Fix Guide for North America)

Your iPhone getting hot isn’t just annoying — it can slow performance, drain the battery, or even pause charging. iOS 18 introduces better thermal management, but heat issues can still appear under heavy use or poor settings. Here’s how to fix iPhone overheating step by step.

1. Check Real-Time Battery and Temperature Usage

iOS 18 now shows improved battery analytics.

  1. Go to Settings → Battery → Battery Health & Charging.
  2. Tap Last 24 Hours to see which apps caused heat buildup.
  3. If an app spikes energy usage, close or offload it.
OnePlus Tip: Gaming, 4K video recording, or using navigation while charging are top heat sources.

2. Turn Off Background App Refresh

Apps constantly updating in the background keep the CPU busy.

  1. Open Settings → General → Background App Refresh.
  2. Tap Background App Refresh → Off or choose Wi-Fi Only.
  3. Disable heavy apps like Facebook, Instagram, and Maps.

3. Adjust Display and Brightness Settings

Your display is a major heat driver. Learn more in our Display Customization guide.

  1. Go to Settings → Display & Brightness.
  2. Lower Brightness or enable Auto-Brightness.
  3. Set Dark Mode ON — OLED iPhones use less power this way.
  4. Disable Always On Display (for Pro models):
    • Settings → Display & Brightness → Always On Display → Off.

4. Manage Charging and Environment Temperature

Never charge your phone under sunlight or near heat sources. If it overheats while charging:

  • Unplug it immediately.
  • Wait until it cools before reconnecting.
  • Use original Apple cables and adapters only.

You can also enable Optimized Battery Charging under: Settings → Battery → Battery Health & Charging.

5. Close Power-Hungry Background Processes

Quickly free system load by:

  1. Swiping up from the bottom → hold → view the app switcher.
  2. Swipe away unused apps.
  3. Turn on Low Power Mode via:
    • Settings → Battery → Low Power Mode → On, or
    • Say “Hey Siri, turn on Low Power Mode.”

6. Reset Settings if Overheating Persists

If heat continues after trying all steps:

  1. Go to Settings → General → Transfer or Reset iPhone.
  2. Tap Reset → Reset All Settings.
  3. This won’t erase data but restores default performance controls.

7. When to Contact Apple Support

If your iPhone remains hot even while idle, or you see “Temperature Warning” often:

OnePlus Tip 💡

Keep your iPhone between 32°F–95°F (0°C–35°C) and remove thick cases when gaming or charging. If you often use GPS or stream video, turn on Airplane Mode when offline and schedule Auto-Low Power Mode in Shortcuts to prevent recurring heat spikes. You can also review our Display Customization guide to optimize visuals for less heat.

Comments

Top Posts on OnePlus

How to Disable and Remove Wallpaper Carousel on Xiaomi Phones (Step-by-Step Guide)

How to Set Up Samsung Account on Galaxy Phones (Complete One UI Guide 2025)

How to Turn On or Off Xiaomi Screen with Double Tap (Step-by-Step Guide)

Clear Samsung Internet Cache Automatically in the US

How to Check Battery Health on Xiaomi Phones (MIUI Hidden Menu Guide)

Smartphone Reviews & Brand Comparisons at OnePlus

Enable Clean Energy Charging in the US and Canada

Enable Guided Access Mode for Kids on iPhone in the US (iOS 18 Guide)

How to Update Pixel Software and Security Patches (Step-by-Step Guide)

Check if Verizon Spam Blocking Is Active on iPhone (*#662)