iPhone 15 Overheating - How to Fix It
Is your iPhone 15 or iPhone 15 Pro running hot? This is a common issue, especially after the initial release. Here's how to cool it down and prevent future overheating.
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⚡ Cool Your Device Down
These work for runaway heat from games, calls, or charging.
Peltier cooler pulls heat off the chassis
Some cases trap heat — these vent it
Microfiber + brush + alcohol wipes
64 bits, pro-grade — for serious DIY repair only
🌡️ When Is Overheating Normal?
Your iPhone 15 will get warm during:
- Initial setup — Restoring from backup, downloading apps, indexing photos
- Wireless charging — Especially with fast chargers
- Intensive apps — Gaming, video editing, AR apps
- Hot environments — Direct sunlight, hot cars
- Software updates — Background processing after updates
If it's uncomfortably hot to hold or shows a temperature warning, that's when you need to act.
🛠️ Tools You'll Need
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📋 Difficulty & Time
🔧 Fix Overheating: Step by Step
Step 1: Remove the Case
If you're using a thick case, remove it for 10 minutes. Plastic and silicone cases trap heat. If the device cools quickly without the case, switch to a thinner or vented case.
Step 2: Check for Background App Drain
Heat is usually a CPU/GPU symptom, not the cause. Settings → Battery → look at App Activity. Force-quit anything showing 30%+ background usage.
Step 3: Stop Charging While Using
Fast-charging while gaming / video calling generates heat from BOTH the SoC and the battery management chip. Stop charging when actively using; use Optimized Battery Charging at night.
Step 4: Check the Charger
Counterfeit USB-C chargers spike voltage and heat the battery. Use only Apple-branded or MFi-certified chargers. If your charger is hot to the touch while charging, replace it.
Step 5: Toggle Airplane Mode
If the device cools rapidly in Airplane Mode, you have a cellular signal issue — the radio is searching for towers and burning power. Re-toggle off; if heat returns, file a carrier ticket.
Step 6: Update iOS
Some iOS versions are notoriously hot. Apple has shipped patch updates specifically for thermal regression. Settings → General → Software Update.
Step 7: Clean the Speakers + Vents
Dust restricts heat dissipation. Use a soft brush + light compressed air to clear the speaker grilles and the vents on the bottom.
⚠️ Common Mistakes to Avoid
- Putting the device in the freezer (condensation causes liquid damage)
- Continuing to use during heat warnings (iOS will throttle, then shut down)
- Using counterfeit chargers that spike voltage
- Leaving the device in a hot car (>120°F can permanently damage the battery)
🏥 When to Call a Pro
If the device gets hot during idle (no apps, screen off), or shuts down spontaneously when warm, you have a hardware problem. Battery service is $99 (Apple) or $59–$89 (third-party). Logic board issues are diagnosed free at the Apple Genius Bar.
🔄 Fix #1: Update to the Latest iOS
Apple released iOS 17.0.3 specifically to address iPhone 15 overheating issues:
- Go to Settings → General → Software Update
- Install any available updates
- Many users reported significant improvement after this update
This is the most important fix — Apple identified and patched a bug that caused excessive heat.
📱 Fix #2: Check Problem Apps
Some apps were causing overheating due to compatibility issues:
- Go to Settings → Battery to see which apps use the most power
- Update all apps in the App Store
- Known culprits at launch included Instagram, Uber, and some games
- If one app consistently causes heat, try deleting and reinstalling it
🔋 Fix #3: Adjust Charging Habits
USB-C fast charging can generate heat:
- Remove the case while charging
- Use a lower-wattage charger (20W instead of 30W+)
- Avoid using the phone while it's charging
- Don't charge in direct sunlight or on soft surfaces (beds, couches)
⚙️ Fix #4: Reduce Background Activity
- Settings → General → Background App Refresh — Turn off for apps that don't need it
- Settings → Privacy & Security → Location Services — Set apps to "While Using" instead of "Always"
- Settings → Display & Brightness → Auto-Lock — Set to 30 seconds or 1 minute
🎮 Fix #5: Adjust Display and Performance Settings
Reduce screen brightness:
- Settings → Display & Brightness — Lower the brightness slider
- Enable Auto-Brightness under Settings → Accessibility → Display & Text Size
For iPhone 15 Pro/Pro Max:
- The ProMotion display (120Hz) can generate extra heat
- Settings → Accessibility → Motion → Limit Frame Rate — Caps refresh rate at 60Hz
🔄 Fix #6: Reset All Settings
If the issue persists after updates:
- Settings → General → Transfer or Reset iPhone → Reset → Reset All Settings
- This won't delete your data but resets all system settings
- Can fix software glitches causing overheating
❄️ How to Cool Down Your iPhone Quickly
If your iPhone is overheating right now:
- Remove the case — Cases trap heat
- Close all apps — Swipe up from bottom, swipe away all apps
- Turn off the phone — Hold Side + Volume, slide to power off
- Move to a cool area — Away from sunlight, not in a hot car
- Don't put it in the fridge/freezer — Rapid temperature change can cause condensation damage
- Fan it or place near AC vent — Gentle airflow helps
⚠️ When to Be Concerned
Contact Apple Support or visit a repair shop if:
- Phone overheats even when idle
- You see the temperature warning screen frequently
- Battery drains extremely fast alongside the heat
- Phone shuts down due to overheating regularly
- The issue started after dropping the phone or water exposure
📦 Accessories That Help
- iPhone 15 Case with Heat Dissipation — Ventilated design for better cooling ($15)
- Phone Cooling Fan Clip — Attaches to back of phone for gaming ($25)
- Apple 20W USB-C Charger — Standard speed, less heat than fast chargers ($19)
Persistent Overheating Issues?
If your iPhone 15 continues to overheat after trying all these fixes, there may be a hardware issue with the battery or internal components.
📞 Call PC Medics: 856-914-1074
We can diagnose thermal issues and check for battery or logic board problems.
📦 Mail-In Repair Service
Not comfortable doing this yourself? Send your device to a professional repair shop.
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