What to Do If Your Phone Gets Extremely Hot

Your phone is warm in your hand, then uncomfortably hot. Maybe you just unplugged it, maybe you're gaming, maybe it's sitting in the sun doing nothing at all. Either way, that heat is not normal, and your gut is right to worry.

Here's the good news: in most cases an overheating phone is a fixable problem, not a dying one. In a smaller number of cases it's a genuine safety issue. This guide will help you tell the difference fast, cool things down without making it worse, and stop it happening again.

Is your phone actually overheating, or just warm?

Every phone gets warm. Charging, gaming, video calls and GPS navigation all generate heat, and a phone that's slightly warm to the touch is working as designed.

The warning signs that matter are different. If your phone is too hot to hold comfortably, if it shows a temperature warning, if the screen dims itself, if charging stops on its own, or if apps start closing unexpectedly, that's your device protecting itself. Take it seriously.

The real risk isn't usually the phone dying. It's the battery. Lithium-ion batteries degrade faster when they run hot, and in rare cases a badly damaged or swollen battery can vent, smoke or catch fire. That's why you shouldn't just ignore it.

Why does my phone get so hot in the first place?

Heat comes from energy being used, and your phone uses a lot of it. The processor works hard, the battery charges and discharges, and the radios (Wi-Fi, cellular, Bluetooth, GPS) transmit constantly. Stack several of those together and the heat adds up faster than the phone can shed it.

Some common culprits:

• Charging while doing something demanding. Fast charging plus a video call plus a thick case is a heat trap.
• Direct sunlight or a hot car. A phone on a dashboard can hit temperatures that trigger a shutdown in minutes.
• A heavy case. Great for drops, terrible for airflow.
• Background apps and rogue software. One badly behaved app can keep the processor busy around the clock.
• Poor signal. When your phone struggles to find a tower, it boosts power to the antenna and works much harder.
• Old or damaged batteries. A worn battery has higher internal resistance, so it produces more heat for the same job.
• Software bugs after an update. Sometimes a new version introduces a process that never sleeps.

If you've noticed other odd behaviour alongside the heat, like sudden shutdowns or a battery that drains in an hour, it's worth knowing how to handle a phone that won't turn on before you assume the worst.

What you can do about it

You have a few realistic paths here. Most people need more than one.

Cool it down right now

The fastest fix is physical. Take the case off, move the phone out of the sun, and let it sit on a hard, cool surface with good airflow. Turn it off if it's really hot.

Don't put it in the fridge or freezer. Condensation can form inside and short-circuit things, and the sudden temperature swing stresses the battery. A fan blowing room-temperature air is better.

Close what's running and let it rest

Swipe away heavy apps, stop background location, and pause charging if you can. If you're gaming, take a break. If you're on a hotspot, disconnect devices you don't need.

Check what's actually eating your battery

Open your battery settings and look at usage by app over the last 24 hours. Anything at the top that you weren't actively using is a suspect. Force-stop it, then see if the heat returns.

Update or roll back

Install pending system and app updates. If the heat started right after an update, a later patch often fixes it. Search your phone model plus "overheating" to see whether others are reporting the same thing.

Replace the battery or the phone

If the phone is several years old, heats up during light use, and drains fast, the battery is the likely cause. A battery replacement is usually a fraction of the cost of a new phone. Ask a reputable repair shop to check it.

Get it looked at properly

If the phone is hot even when idle and off the charger, or the back panel is bulging, stop using it and get professional eyes on it. You can find a trusted repair option through our local provider directory.

Which option is right for you?

It depends on the pattern.

If your phone only gets hot during gaming, charging or navigation, that's normal behaviour. Improve airflow, stop stacking demanding tasks, and stop worrying.

If it gets hot during ordinary use, like texting or browsing, something is off. Start with the software checks, then consider the battery.

If it's hot when idle, or the case is bulging, or you smell something odd, treat it as a hardware problem and stop using it. A swollen battery is not a wait-and-see situation.

If the phone is under warranty, don't open it yourself. You'll void coverage you might need.

Step-by-step: what to do right now

1. Unplug it if it's charging.
2. Take the case off.
3. Move it out of sunlight and off soft surfaces like beds and sofas.
4. Turn it off if it's too hot to hold, and leave it off for 10-15 minutes.
5. Let it cool at room temperature. No fridge, no freezer, no ice packs directly on it.
6. Turn it back on and check battery usage for anything unusual.
7. Force-stop or uninstall the offending app.
8. Update your system and apps.
9. Test it with light use for an hour. Does the heat come back?
10. If it does, book a battery check or repair.
11. If the phone is swollen, smoking or hissing, get it outside and away from anything flammable, and call your local emergency number if there's fire or smoke. Numbers vary by country; ours are listed on the emergency numbers page.

Common mistakes to avoid

Putting it in the freezer. Condensation damages internals. Fix: use a fan and room-temperature air.

Charging it while gaming "just this once." That's the single fastest way to cook a battery. Fix: pick one, not both.

Ignoring a bulging back panel. That's a failing battery, not cosmetic. Fix: stop using it and get it repaired or replaced.

Buying a cheap replacement battery online. Poor cells can be worse than the one you removed. Fix: use a reputable repairer.

Leaving it on the dashboard. Even for ten minutes. Fix: glovebox, or better, your pocket.

Assuming a restart fixes everything. It often helps, but if the heat returns within a day, it's a hardware or app issue. Fix: investigate properly.

Letting kids use a phone while it's charging. It's easy to miss a hot device in small hands. Our kids and family safety section covers habits worth building early.

Expert takeaway

Heat is your phone telling you it's working harder than it should. Listen to it. Nine times out of ten, the fix is airflow, fewer background tasks, or a new battery. The tenth time is the one where you stop using it and get help. For more practical guides on everyday problems like this, browse our guides and the practical-knowledge blog.

FAQ

How hot is too hot for a phone? If it's uncomfortable to hold or your phone shows a temperature warning, it's too hot. Most phones start throttling performance somewhere around 35-40°C (95-104°F) internally. Don't rely on exact numbers; trust the warnings and your own hand.

Can an overheating phone explode? Explosions are rare, but a damaged or swollen lithium-ion battery can catch fire or vent. If your phone is bulging, smoking, or hissing, move it away from anything flammable and call emergency services if there's fire.

Should I put my phone in the fridge to cool it down? No. Condensation can form inside the device and cause damage. A fan and room-temperature air are safer and just as effective.

Why does my phone get hot when I'm not using it? Usually a background app, a syncing issue, a poor signal, or a worn battery. Check battery usage by app, then consider a hardware check if nothing stands out.

Will overheating damage my phone permanently? Occasional heat during heavy use won't. Repeated overheating, or heat from a failing battery, can shorten battery life and eventually damage other components. Deal with it early and it usually costs you very little.

This article is general information, not professional or safety advice for your specific device. If you suspect a battery fault or fire risk, contact the manufacturer or a qualified repair professional.