iPhone Overheating or Gets Hot While Charging Fix

Quick Answer

Mild warmth can be normal while an iPhone charges, especially during wireless charging, software updates, device setup, video streaming, gaming, or other processor-intensive activity. Uncomfortable, rapidly increasing, or repeated heat is not something to ignore. Disconnect the charger, stop using the phone, remove the case, and let it cool in a ventilated place before testing the charger, cable, charging method, apps, and battery health.

Safety Check

Stop charging and discontinue DIY troubleshooting if you notice:

• A swollen battery, raised screen, or bulging back panel
• Smoke, sparks, or a burning or chemical smell
• Heat that becomes extreme or increases rapidly
• A melted, discoloured, or damaged charging connector
• A frayed cable or damaged power adapter
• Liquid or visible corrosion around the charging port
• Repeated shutdowns accompanied by heat
• Heat that makes the iPhone painful or unsafe to hold

Place the disconnected iPhone on a dry, hard, non-flammable surface away from direct sunlight. Do not place it under a pillow, blanket, mattress, or clothing.

Do not cool the iPhone with water, ice, a refrigerator, or a freezer. Sudden temperature changes can create condensation and may damage internal components.

Apple advises discontinuing use when damage to the iPhone or battery is suspected. Battery repair should be handled by a trained technician because battery damage can cause overheating, fire, or injury.

Choose the Symptom That Matches

What you see	What it may suggest	How to test it	Next safe step
The iPhone is mildly warm but charges normally	Normal charging heat or active background work	Stop using the phone and charge it with the screen locked	Continue monitoring for abnormal heat
It becomes hot while gaming, navigating, recording video, or streaming	Processor-intensive activity is adding heat while the battery charges	Stop the activity and disconnect the charger until the phone cools	Charge without using demanding apps
“Charging On Hold” appears	The iPhone is outside its acceptable charging-temperature range	Move it away from sunlight or another heat source and let it cool	Charging should resume automatically
It gets hot only on a wireless charger	Case material, metal objects, alignment, or that charging setup may be contributing	Remove the case and compare with compatible wired charging	Stop using the wireless setup if abnormal heat returns
It gets hot only with one cable or adapter	A damaged, incompatible, or inefficient accessory may be involved	Test one known-good compatible cable and adapter	Replace only the accessory identified by comparison
It becomes hot with several chargers while idle	A battery, charging-port, software, or internal hardware problem remains possible	Check battery usage and battery-health messages	Arrange professional inspection if the pattern continues
The screen or back panel is bulging	Possible battery swelling	Do not press the panel or reconnect the charger	Stop using the iPhone and obtain service

Apple notes that an iPhone may feel warmer during wireless charging, software updates, setup, restoration, video streaming, and processor-intensive activity. Charging may slow or stop when the internal temperature rises beyond the normal range.

1-Minute Safe Checks

1. Disconnect the charger if the iPhone is unusually hot.
2. Stop gaming, recording video, navigation, hotspot use, or other demanding activity.
3. Remove the case and any magnetic wallet or charging accessory.
4. Move the iPhone away from direct sunlight and other heat sources.
5. Place it on a hard, uncovered surface with airflow around it.
6. Inspect the charger and cable for damage, discoloration, bending, or melting.
7. After the iPhone returns to a comfortable temperature, test it with the screen locked and without running demanding apps.

Do not continue repeatedly reconnecting the charger while the phone is still hot.

Fix 1: Let the iPhone Cool Safely

OFFICIALLY DOCUMENTED STEP

Use This When

Use this step when:

• The iPhone displays a temperature warning
• “Charging On Hold” appears
• Charging slows or stops while the phone is hot
• The phone becomes noticeably hotter during charging

Why It May Help

iPhone has built-in temperature protections. When the device becomes too warm, iOS may slow or pause wired or wireless charging until the battery returns to a safer temperature.

This protection does not prove that the charger, battery, or phone is fault-free. It only indicates that the temperature limit was reached.

Steps

1. Disconnect the charging cable or remove the iPhone from the wireless charger.
2. Stop using processor-intensive apps or features.
3. Turn off the iPhone if a temperature warning appears.
4. Remove the case.
5. Move the device to a cooler indoor location away from direct sunlight.
6. Place it on a dry, hard surface with adequate ventilation.
7. Allow it to cool naturally.
8. Do not reconnect the charger until the device feels normal again and the warning has disappeared.
9. After cooling, test charging in a room where the ambient temperature is within Apple’s recommended operating range.

Apple specifies an ambient operating range of 0°C to 35°C or 32°F to 95°F.

Expected Result

The temperature warning or Charging On Hold message should disappear after the device cools. Charging normally resumes automatically when the battery returns to an acceptable temperature.

What the Result Means

• If the iPhone charges normally after cooling, the immediate temperature protection worked as intended.
• If overheating returns in a cool environment with the screen locked, continue with the accessory, charging-method, software, and battery checks below.

Cooling successfully does not establish why the iPhone became hot.

Fix 2: Reduce Processor and Background Activity

DIAGNOSTIC TEST

Use This When

Use this test when the iPhone becomes hot while you are:

• Gaming
• Recording or editing video
• Streaming high-quality video
• Using GPS navigation
• Sharing a Personal Hotspot
• Restoring a backup
• Setting up a new iPhone
• Completing an iOS update
• Running an app that remains active in the background

Why It May Help

Charging creates some heat, and demanding apps or background system tasks can add more. Apple identifies processor-intensive activity, wireless charging, setup, restoration, and software updates as situations where an iPhone may feel warmer.

On supported iOS versions, Battery settings may also show Insights for an ongoing iOS update or device setup that is affecting battery life and thermal performance.

Steps

1. Disconnect the charger and allow the iPhone to cool.
2. Open Settings.
3. Tap Battery.
4. Review the Battery chart and App and System Activity Usage.
5. Look for an app showing unusually high activity.
6. Check for an Insight such as Ongoing iOS Update or Ongoing Device Setup, when available.
7. Stop the demanding app or activity.
8. Restart the iPhone if an app appears stuck or continues using resources unexpectedly.
9. After cooling, reconnect the charger.
10. Lock the screen and leave the iPhone unused while it charges briefly.
11. Compare its temperature with the earlier charging attempt.

Expected Result

The iPhone should remain cooler when the screen is locked and the demanding activity has stopped.

What the Result Means

• If the heat drops substantially, processor or background activity was contributing to the temperature.
• This result does not prove that the charger or battery is healthy. More than one factor can contribute at the same time.
• If one app repeatedly causes heat, update that app and reduce its use while charging.
• If the Battery screen shows an ongoing update or setup process, allow that process to finish in a cool environment. Battery use and thermal performance may remain temporarily elevated after an update.

Fix 3: Remove the Case and Compare Wired and Wireless Charging

DIAGNOSTIC TEST

Use This When

Use this test when:

• The iPhone gets hotter inside a thick case
• Heat occurs mainly during MagSafe or Qi charging
• Charging repeatedly pauses on a wireless charger
• The phone or charger becomes warm near a magnetic accessory

Why It May Help

A case can reduce heat dissipation. With wireless charging, poor alignment, metallic cases, magnetic wallets, and foreign metal objects can interfere with charging or become warm.

Apple recommends removing the case when an iPhone tends to heat up while charging. Apple also warns against metallic cases or metal objects between an iPhone and a wireless charger.

Steps

1. Disconnect the charger and let the iPhone cool.
2. Remove the case, magnetic wallet, grip, or other rear accessory.
3. Inspect the wireless charger for keys, coins, jewellery, or other metal objects.
4. Place the iPhone centrally on the charging surface.
5. Charge it on a hard, uncovered surface.
6. Do not use the phone during the test.
7. If abnormal heat returns, stop wireless charging.
8. After cooling, compare it with a compatible wired charger and known-good cable.
9. Stop the comparison immediately if either setup produces rapidly increasing or uncomfortable heat.

Expected Result

The iPhone may remain cooler after removing the case, improving wireless alignment, or switching charging methods.

What the Result Means

• If heat occurs only with one case or wireless charging setup, that setup becomes a stronger possible contributor.
• If the iPhone overheats with both wired and wireless charging, the result points away from alignment alone. Continue with the charger, cable, software, and battery checks.
• The comparison does not confirm an internal hardware failure by itself.

Fix 4: Test the Charger, Cable, Outlet, and Charging Port

DIAGNOSTIC TEST

Use This When

Use this test when:

• The adapter or cable also becomes unusually hot
• Charging connects and disconnects
• Heat happens with one charging set but not another
• The connector looks bent, frayed, darkened, or damaged
• Charging is unusually slow while the iPhone becomes hot

Why It May Help

A damaged cable, adapter, plug, connector, or unstable connection can make charging unreliable and may create a safety risk.

Apple advises using compatible charging equipment that complies with applicable safety standards. Damaged cables, damaged chargers, and charging when moisture is present should be avoided.

Steps

1. Disconnect the current charger.
2. Inspect the cable from end to end.
3. Stop using it if you find fraying, splitting, exposed conductors, dark marks, or bent connectors.
4. Inspect the adapter for loose parts, damaged prongs, cracks, discoloration, or signs of moisture.
5. Look into the iPhone charging port under good lighting.
6. Do not insert a pin, needle, paper clip, or metal tool.
7. Do not apply liquid, alcohol, or cleaning chemicals inside the port.
8. If compacted debris is visible, arrange professional cleaning.
9. If pins appear bent, recessed, corroded, or damaged, arrange service.
10. After the iPhone cools, test a different known-good compatible cable.
11. Test a different compatible adapter.
12. Plug the adapter directly into another working wall outlet.
13. Change only one item at a time so you can identify which component changes the result.
14. Stop immediately if the cable, connector, adapter, or iPhone becomes excessively hot.

Expected Result

The iPhone should charge without abnormal heat, repeated disconnections, or visible damage to the accessories.

What the Result Means

• If abnormal heat occurs only with one cable or adapter, discontinue use of that accessory.
• If heat continues with several known-good charging accessories and outlets, the charger alone is less likely to explain the problem.
• A successful test with another charger does not rule out an intermittent phone, port, or battery issue.

Fix 5: Update iOS After the Device Is Cool

CONDITIONAL STEP

Use This When

Use this step when:

• The overheating began after a software change
• The problem occurs with more than one known-good charger
• The iPhone is stable enough to operate normally after cooling
• No swelling, liquid damage, burning smell, or connector damage is present

Why It May Help

An iOS update can include bug fixes, security updates, and system improvements. However, background work immediately after an update may also temporarily increase battery use and thermal activity.

Update only after the iPhone has cooled. Stop if it begins overheating again while connected to power.

Steps

1. Back up important data using iCloud or a computer.
2. Let the iPhone cool to a normal temperature.
3. Connect to a stable Wi-Fi network.
4. Use a known-good compatible charger in a cool, ventilated area.
5. Open Settings.
6. Tap General.
7. Tap Software Update.
8. Install an available update and follow the onscreen instructions.
9. Keep the iPhone uncovered during the update.
10. After installation, allow background tasks to finish.
11. Recheck Settings > Battery for update or setup Insights when available.
12. Test charging again after the system activity has settled.

Expected Result

If a software fault contributed to the heat, the problem may stop after the update and background processing finish.

What the Result Means

• Improvement after an update supports a software-related contribution but does not prove the previous iOS version was the only cause.
• If the iPhone continues overheating while idle and charging with known-good equipment, continue to the battery-health check.
• Do not perform a factory reset as a routine fix for charging-related heat. A reset will not repair a damaged battery, charger, cable, charging port, or internal component.

Fix 6: Check Battery Usage, Battery Health, and Service Messages

DIAGNOSTIC TEST

Use This When

Use this test when:

• The iPhone becomes hot with different chargers
• Battery life has also become noticeably shorter
• The phone shuts down unexpectedly
• Heat occurs while the phone is idle
• The battery was previously replaced
• The problem has gradually become more frequent

Why It May Help

Rechargeable batteries have a limited lifespan, and their capacity and performance decline with use and age. Battery Health information can show whether service is recommended, but a low capacity percentage alone does not prove that the battery is causing the heat.

Steps

1. Open Settings.
2. Tap Battery.
3. On iPhone 15 and later, tap Battery Health.
4. On iPhone 14 and earlier, tap Battery Health & Charging.
5. Look for a Service message or another battery warning.
6. Review maximum capacity together with the symptoms you are experiencing.
7. Open Settings > General > About if the battery was previously replaced.
8. Check Parts and Service History, when available.
9. Note any Unknown, Used, or battery-verification message.
10. Arrange an Apple or qualified professional inspection if:
    • Battery service is recommended
    • Battery information cannot be verified
    • Heat occurs with several known-good chargers
    • The iPhone shuts down unexpectedly
    • The screen or back panel is lifting
    • The device was recently dropped, crushed, or exposed to liquid

Expected Result

Battery settings may report normal operation, reduced capacity, a service recommendation, or a battery-verification issue.

What the Result Means

• A Service message combined with abnormal heat, rapid battery drain, or shutdowns strengthens the reason to obtain professional inspection.
• Normal Battery Health does not completely rule out a battery, charging-port, or internal hardware problem.
• Do not open the iPhone or attempt a battery replacement without the required training and equipment. Apple states that lithium-ion battery service should be performed carefully by trained technicians to avoid overheating, fire, or injury.

When the Problem May Be Hardware-Related

Professional inspection becomes appropriate when one or more of these conditions remain:

• The iPhone overheats with multiple known-good chargers
• Heat returns while the screen is locked and no demanding app is running
• The charging port is loose, damaged, discoloured, or corroded
• Charging repeatedly connects and disconnects
• The battery drains rapidly together with abnormal heat
• The iPhone unexpectedly shuts down while charging
• The problem began after a drop, crushing force, repair, or liquid exposure
• The battery cannot be verified
• The phone becomes hot around a previously repaired area
• The screen or back panel is lifting
• There is smoke, swelling, odour, or melted material

These symptoms can justify inspection, but they do not identify the failed component by themselves.

When to Stop DIY Troubleshooting

Stop home troubleshooting and disconnect the charger when:

• The temperature rises rapidly
• The device is painful or unsafe to hold
• A temperature warning repeatedly returns in a cool room
• The iPhone remains hot after charging is disconnected
• Smoke, sparks, swelling, or an unusual smell appears
• A cable, adapter, connector, or port looks melted or burnt
• Liquid or corrosion is present
• The phone repeatedly shuts down while hot
• Continued testing would require opening the iPhone

Do not continue charging a visibly damaged device.

Common Mistakes

• Continuing to charge while a temperature warning is displayed
• Placing the iPhone in a refrigerator or freezer
• Cooling the iPhone with water or ice
• Charging under a pillow, blanket, mattress, or clothing
• Assuming every warm iPhone has a damaged battery
• Assuming processor activity is the only possible cause
• Replacing the battery based only on one warm charging session
• Testing several chargers without allowing the phone to cool between tests
• Using a frayed cable or damaged adapter
• Scraping the charging port with a metal object
• Performing a factory reset before testing the charger, cable, case, charging method, and battery health
• Continuing wireless charging with metal objects or a metallic case between the phone and charger

Frequently Asked Questions

Official Sources

Official sources checked: August 2, 2026

Apple

Page: If your iPhone or iPad gets too hot or too cold

Direct verified URL: https://support.apple.com/en-au/118431

URL status: Verified accessible on August 2, 2026

Supports:

• Normal situations where an iPhone may feel warmer
• The 0°C to 35°C operating-temperature range
• Temperature-related charging slowdown or interruption
• Charging On Hold and temperature-warning instructions

Scope limitation: The page describes general iPhone and iPad temperature behaviour. It does not diagnose a specific damaged component.

Apple

Page: Understand Thermally Limited Charging on iPhone

Direct verified URL: https://support.apple.com/en-ph/guide/iphone/iph3006fbee4/ios

URL status: Verified accessible on August 2, 2026

Supports:

• Charging may slow or pause when an iPhone becomes too warm
• Charging resumes when the battery returns to an acceptable temperature
• Removing the case when an iPhone tends to heat during charging
• Thermal protection for wired, MagSafe, and other wireless charging

Scope limitation: The documented thermal-charging feature applies to supported iOS versions. Interface wording may vary by version.

Apple

Page: Important safety information for iPhone

Direct verified URL: https://support.apple.com/en-ph/guide/iphone/iph301fc905/ios

URL status: Verified accessible on August 2, 2026

Supports:

• Discontinuing use when damage to the iPhone or battery is suspected
• Avoiding damaged cables and chargers
• Keeping charging equipment ventilated
• Avoiding metallic objects during wireless charging
• Using trained technicians for battery repair

Scope limitation:

The page provides safety guidance and does not identify which component is responsible for a particular overheating case.

Apple

Page: If the battery in your iPhone or iPad drains too quickly

Direct verified URL: https://support.apple.com/en-us/120745

URL status: Verified accessible on August 2, 2026

Supports:

• Reviewing app and system battery activity
• Background Activity and low-signal information
• Ongoing iOS Update and Ongoing Device Setup Insights
• Battery-health and service-message checks

Scope limitation:

Some charts, Insights, and menu names require supported iOS versions and may differ between models.

Apple

Page: Update your iPhone or iPad

Direct verified URL: https://support.apple.com/en-ph/118575

URL status: Verified accessible on August 2, 2026

Supports:

• Backing up before updating
• Opening Settings, General, and Software Update
• Installing an available iOS update

Scope limitation:

An update should be attempted only after the iPhone has cooled and can charge safely.

Apple

Page: About genuine iPhone batteries

Direct verified URL: https://support.apple.com/en-ph/103269

URL status: Verified accessible on August 2, 2026

Supports:

• Rechargeable batteries have a limited lifespan
• Battery replacement should be performed carefully by trained technicians
• Parts and Service History and battery-verification information
• Potential safety and performance issues involving damaged or unverified batteries

Scope limitation:

A battery message does not by itself confirm the cause of overheating.

How This Guide Was Verified

Last technically checked: August 2, 2026

Research method: Current Apple Support and iPhone User Guide pages were opened directly. Page titles, temperature guidance, charging behaviour, battery menus, safety warnings, and clean source URLs were checked before output.

Physically tested:

No documentation reviewed.

Applies to:

iPhone models using compatible wired, MagSafe, or Qi charging. Available menus and thermal features vary by iPhone model and iOS version.

Important limitation:

This guide can narrow down environmental, workload, accessory, software, and battery-related possibilities. It cannot identify a failed internal component without physical inspection and diagnostics.

Data-loss risk:

None. This guide does not include a factory reset, restore, firmware reinstall, or another data-erasing procedure.

Final Steps

• Start by disconnecting the charger and allowing the iPhone to cool naturally. Then test charging without the case, without demanding apps, and with known-good compatible accessories.
• The most useful diagnostic result is whether the heat follows a specific activity, case, wireless charger, cable, adapter, or outlet.
• If overheating continues while the phone is idle and using different known-good chargers, check Battery Health and arrange professional inspection.
• Stop immediately if you notice swelling, smoke, odour, melted parts, liquid damage, dangerous heat, or repeated heat-related shutdowns.