A phone that feels warm while gaming or charging is normal. A phone that gets too hot to hold, shows a temperature warning, dims the screen or shuts down is not. Overheating drains the battery faster, slows performance and over time damages the battery. The good news is that most overheating has simple causes and simple fixes. This guide explains why phones overheat and fifteen ways to fix it on Android and iPhone.
Why phones overheat
| Cause | Why it creates heat |
|---|---|
| Heavy gaming or video recording | Processor and graphics chip work at full power |
| Charging, especially fast charging | Battery and charging circuits produce heat |
| Using the phone while charging | Charging heat plus processing heat |
| Direct sunlight or a hot car | Outside heat adds to internal heat |
| Thick or insulating case | Traps heat inside |
| Weak signal | The modem works harder to stay connected |
| Background apps or bugs | Constant processor use |
| Malware | Hidden processes running constantly |
| Old or swollen battery | Damaged cells run hotter |
| Software updates | Phone indexes files after an update |
Signs your phone is overheating
- The phone feels hot, not just warm, especially near the camera
- A temperature warning appears on screen
- The screen dims automatically
- Charging slows or stops
- Apps lag or the camera flash is disabled
- The phone shuts down by itself
15 ways to fix phone overheating
1. Stop charging
Unplug the phone if it is charging. Let it cool before plugging in again.
2. Close heavy apps
Exit games, video apps, navigation and camera apps. On iPhone swipe up and hold to see open apps; on Android tap the recent apps button and close them.
3. Remove the case
Cases trap heat. Take it off while charging or gaming.
4. Move out of the sun
Never leave your phone on a car dashboard or in direct sunlight. Move to a shaded, cooler spot.
5. Lower screen brightness
The display is one of the biggest power users. Turn on auto-brightness or lower it manually.
6. Turn on battery saver or Low Power Mode
These modes reduce background activity and processor speed, cutting heat.
7. Turn off what you are not using
Disable Bluetooth, mobile hotspot, GPS and WiFi when not needed. Hotspot in particular creates a lot of heat.
8. Use airplane mode in weak signal areas
In basements or rural areas, the phone strains to find a signal. Airplane mode or WiFi calling can reduce heat.
9. Update your software
Updates often fix bugs that cause overheating. Check Settings, General, Software Update on iPhone or Settings, Software update on Android.
10. Update or remove problem apps
Check battery usage in Settings to see which apps use the most power. Update or uninstall apps that use far more than expected.
11. Restart your phone
A restart clears stuck processes that keep the processor busy.
12. Use the original or a certified charger
Cheap chargers and cables can deliver unstable power and create excessive heat.
13. Avoid using the phone while charging
Gaming or streaming while charging is one of the most common causes of overheating.
14. Scan for malware
On Android, use Google Play Protect in the Play Store menu. Remove apps you do not recognize. iPhones rarely get malware, but deleting suspicious profiles in Settings, General, VPN and Device Management helps.
15. Check battery health
On iPhone go to Settings, Battery, Battery Health. On Android check your manufacturer’s device care app. A degraded or swollen battery should be replaced by a professional.
What NOT to do
- Do not put your phone in the fridge or freezer. Sudden cold can cause condensation inside the phone.
- Do not blow cold air directly from an air conditioner into the ports.
- Do not keep using a phone with a swollen battery.
- Do not charge your phone under a pillow or blanket.
Frequently asked questions
Is it normal for my phone to get hot while charging?
Slightly warm is normal. Too hot to hold is not.
Can overheating damage my phone?
Yes. Repeated overheating shortens battery life and can damage internal components.
Why does my phone overheat after an update?
The phone reindexes files and optimizes apps for a day or two after an update, which uses extra power.
At what temperature is a phone too hot?
Most phones are designed to work between 0 and 35 degrees Celsius ambient temperature. Internal temperatures above about 45 degrees trigger protective measures.
Overheating fixes by situation
| Situation | What to do right now | Long-term fix |
|---|---|---|
| Phone hot while gaming | Pause, lower graphics settings, remove case | Turn on game mode, cap frame rate at 60 fps |
| Phone hot while charging | Unplug, remove case, let it cool | Use original charger, turn on optimized charging |
| Phone hot in pocket doing nothing | Restart, check battery usage | Uninstall misbehaving apps, update software |
| Phone hot in the car | Move it off the dashboard into shade | Use a vent mount, not a windshield mount in sun |
| Phone hot while using maps | Lower brightness, close other apps | Download offline maps to reduce data use |
| Phone hot after update | Wait 24 to 48 hours | Update apps too, restart once |
| Phone hot on video calls | Turn off camera effects and HD video | Use WiFi instead of mobile data |
Android-specific tips
- Open Settings, Battery and check Battery usage to find apps that drain power in the background.
- Turn on Adaptive Battery so Android limits apps you rarely use.
- On Samsung phones, open Device care and tap Optimize now.
- Restrict background activity for social media apps that refresh constantly.
- Disable Always On Display if your phone runs warm.
- In Developer options, avoid forcing high refresh rates if they are not needed.
- Remove widgets that update every few minutes, such as live weather or stock widgets.
iPhone-specific tips
- Go to Settings, General, Background App Refresh and turn it off for apps that do not need it.
- Turn on Optimized Battery Charging in Settings, Battery, Charging.
- Check Settings, Battery for apps with high background activity.
- Turn off Location Services for apps that do not need it, under Privacy and Security.
- Disable ProMotion high refresh rate by turning on Limit Frame Rate in Accessibility, Motion, if heat is a problem.
- If you see the message that your iPhone needs to cool down before you can use it, turn it off and wait in a cool place.
When overheating is dangerous
Most overheating is just uncomfortable, but some signs mean you should stop using the phone immediately:
- The back or screen is bulging or separating
- You smell burning or chemicals
- The phone is too hot to touch even when idle
- You see smoke or sparks near the charging port
These can signal a failing or swollen lithium-ion battery, which can catch fire. Turn the phone off, unplug it, place it on a non-flammable surface away from anything that can burn, and contact the manufacturer or a certified repair shop. Do not try to puncture or press a swollen battery.
Accessories that help keep phones cool
| Accessory | How it helps | Worth it for |
|---|---|---|
| Thin, ventilated case | Lets heat escape | Everyone |
| Phone cooling fan or clip-on cooler | Actively pulls heat away | Mobile gamers |
| Vent car mount | Uses air conditioning airflow | Drivers using maps |
| Certified charger | Stable power with heat protection | Everyone |
| Wireless charger with fan | Reduces wireless charging heat | Overnight charging |
How battery health and heat are linked
Heat is the biggest enemy of lithium-ion batteries. Every time a battery runs hot, its chemistry ages a little faster. A battery that would normally keep 80 percent of its capacity for around 500 to 1000 full charge cycles can lose capacity much sooner if it regularly gets very hot. As capacity drops, the phone works harder and runs warmer, creating a cycle. Keeping your phone cool is one of the easiest ways to make your battery last longer.
Real examples
The gamer. Arjun’s phone hit a heat warning every evening during a battle game. Lowering the graphics to medium, capping frame rate and removing his thick rugged case kept it cool enough to play for hours.
The commuter. Hannah’s phone overheated every afternoon in the car while running navigation. Moving it from a windshield mount in direct sun to an air vent mount solved the problem.
The rogue app. Tom’s Android was hot in his pocket all day. Battery usage showed a shopping app using 40 percent of the battery in the background. Uninstalling it fixed the overheating.
Quick cool-down routine
When your phone is hot right now, follow this 60-second routine: unplug it, close all apps, take off the case, turn on Low Power Mode or battery saver, switch on airplane mode if you do not need the network, and set the phone on a hard, cool surface in the shade. Within ten to fifteen minutes most phones return to a normal temperature without any damage.
The bottom line
To fix phone overheating, stop charging, close heavy apps, remove the case, get out of the sun, lower brightness and use battery saver. Keep software updated, use certified chargers and check battery health. If your phone also has charging problems, read how to fix iPhone not charging, and to free resources, see how to clear cache on Android.
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