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iPhone 13 Family Troubleshooting Guide: Battery Drain, Pink Screen, Display, Camera, Face ID, Wi-Fi, Cellular, Charging and Overheating Problems

The iPhone 13 family — iPhone 13 mini, iPhone 13, iPhone 13 Pro and iPhone 13 Pro Max — remains widely used, but aging batteries, years of charging cycles, p...

Bison Technical Team Enterprise IT specialists

Updated 26 Aug 2026 20 min read 5 total views

The iPhone 13 family — iPhone 13 mini, iPhone 13, iPhone 13 Pro and iPhone 13 Pro Max — remains widely used, but aging batteries, years of charging cycles, physical wear, repairs and newer iOS releases can make troubleshooting more complicated than when these devices were new.

This guide covers the major problem categories affecting the iPhone 13 generation:

Battery drain and battery health
Display, touchscreen and OLED problems
Pink-screen symptoms
Camera problems
Face ID and TrueDepth problems
Wi-Fi failures
Cellular, SIM, eSIM and 5G problems
Lightning, MagSafe and wireless-charging problems
Overheating and temperature warnings

The iPhone 13 generation supports Face ID, Wi-Fi 6 and 5G. The standard iPhone 13 uses a Lightning connector and supports MagSafe charging up to 15W and conventional Qi charging. Apple lists fast-charge capability of approximately 50% in around 30 minutes under specified conditions with a suitable 20W-or-higher adapter.

Important: Menu names can vary slightly depending on the installed iOS version. Before performing destructive troubleshooting such as erasing the iPhone, make a current backup whenever possible.

1. iPhone 13 Family Battery Drain Problems

Battery drain is increasingly common on older iPhone 13-series devices because the original batteries have accumulated years of chemical aging and charging cycles.

Typical symptoms

Users may report:

Battery percentage falling unusually quickly
Large battery loss overnight
Phone becoming warm while idle
Battery dropping rapidly while using 5G
Heavy drain while using Camera, Maps or video applications
Poor battery life after an iOS update
Sudden shutdown at low battery percentages
Battery percentage changing unexpectedly
Battery drain while the phone is apparently unused

Step 1 — Check battery usage

Open:

Settings → Battery

Examine the battery activity and application usage.

Look for applications consuming an unexpectedly large percentage of battery.

Pay particular attention to:

Social-media applications
Navigation/GPS applications
Video-streaming apps
Camera-intensive applications
VPN software
Cloud-storage applications
Background synchronization
Mail accounts
Poor-cellular-signal situations

An application showing high usage is not automatically defective. For example, several hours of video streaming legitimately consumes significant battery power.

Step 2 — Check battery health

Open the Battery settings and locate Battery Health & Charging or the equivalent battery-health menu provided by your iOS version.

Check Maximum Capacity and any service-related message.

Maximum Capacity compares the battery's current capacity with its capacity when new.

A significantly aged battery can produce:

Reduced runtime
Unexpected shutdowns
Poor peak-performance capability
Faster percentage drops

If iOS indicates that battery service is recommended, replacing the battery may be more effective than repeatedly changing software settings.

Step 3 — Restart the iPhone

A restart can terminate a runaway application or process.

If the phone is responding normally, turn it off normally and restart it.

If it is frozen, perform a force restart:

Quickly press Volume Up.
Quickly press Volume Down.
Press and hold the Side button.
Release it when the Apple logo appears.

A force restart does not normally erase user data.

Step 4 — Check for an iOS update

Open:

Settings → General → Software Update

Install a stable update when appropriate.

After a major update, temporary background tasks such as indexing, photo analysis and application updates can increase battery consumption for some time.

Do not immediately conclude that the battery has failed solely because battery consumption increased shortly after an update.

Step 5 — Investigate weak cellular signal

Poor cellular reception can increase power consumption because the cellular modem must work harder to maintain communication with the network.

If drain is significantly worse in one office, basement or building, compare battery behavior somewhere with a strong signal.

2. Battery Drains Overnight

For unexplained overnight drain, check:

Settings → Battery

Examine the hours when the phone was supposedly idle.

Potential causes include:

Background app activity
Cloud photo synchronization
iCloud backup
Email synchronization
Poor cellular reception
VPN activity
Personal Hotspot
Location services
An application repeatedly crashing or reconnecting

A useful test is to charge the device, restart it and leave it unused overnight under known-good Wi-Fi and cellular conditions.

If the battery continues losing an abnormally large percentage while almost nothing is running, battery condition or a deeper software/hardware issue should be investigated.

3. iPhone 13 Display Problems

The iPhone 13 family uses OLED display technology, while the Pro models additionally introduced ProMotion adaptive refresh-rate technology.

Display problems can therefore have several different causes.

Common symptoms

Black screen
Flickering
Green or pink tint
Vertical lines
Touch not responding
Ghost touch
Brightness fluctuating
Screen flashing
Display remains black while phone rings
Screen turns on but touch fails
Partial touch failure
Image retention

Basic display troubleshooting

First:

Remove the case.
Remove a questionable screen protector.
Clean and dry the display.
Disconnect Lightning accessories.
Force restart the iPhone.
Update iOS.

If the screen is black but the iPhone still rings or vibrates, this strongly suggests the phone itself may still be running.

Use a flashlight at an angle and observe whether there is any abnormal image behavior, although OLED displays do not use a traditional LCD backlight.

Hardware indicators

Hardware repair becomes more likely when:

Lines appear immediately during startup.
The screen was damaged after a drop.
Touch fails in exactly the same area continuously.
Display problems remain after restoring the operating system.
The display is physically separated from the enclosure.
The screen has been replaced previously and problems started afterward.

A separating display can also indicate a swollen battery. Stop using and charging the device if battery swelling is suspected.

4. iPhone 13 Pink Screen Problem

A pink, purple or magenta screen has been reported by some iPhone 13-generation users.

Symptoms can include:

Entire display turning pink
Pink flash followed by restart
Purple/pink screen during an application crash
Repeated pink screen followed by Apple logo
Pink tint rather than complete pink-screen crash

It is important to distinguish between a temporary software-rendering problem and a persistent OLED/display hardware fault.

Troubleshooting pink screen

Step 1 — Force restart

Use:

Volume Up → Volume Down → hold Side button

Wait for the Apple logo.

Step 2 — Update iOS

Go to:

Settings → General → Software Update

Install an available stable update.

Step 3 — Update applications

If the pink screen occurs only while using one application, update that application.

If necessary, reinstall it after ensuring its data is safely synchronized or backed up.

Step 4 — Check storage

Open:

Settings → General → iPhone Storage

Extremely low free storage can contribute to general system instability.

Step 5 — Determine whether the color defect is persistent

If the screen remains pink even during:

Apple-logo startup
Settings
Multiple unrelated applications

the display or associated hardware requires stronger consideration.

Step 6 — Back up important data

Repeated crashes or display corruption should be treated seriously. Create a backup before advanced troubleshooting.

5. Pink Screen Followed by Restart

If the phone repeatedly becomes pink and restarts, determine whether the iPhone is experiencing a broader system crash.

Check:

Settings → Privacy & Security → Analytics & Improvements → Analytics Data

Depending on iOS version and settings, diagnostic logs may be available.

Repeated panic-related logs can indicate a lower-level hardware or operating-system failure.

Do not replace the display merely because a pink screen appeared once. Conversely, repeated crashes should not automatically be dismissed as a harmless display glitch.

6. iPhone 13 Camera Problems

Common complaints include:

Camera app shows black screen
Camera freezes
Photos are blurry
Camera won't focus
Camera shakes
Flash doesn't work
Front camera fails
One rear camera mode doesn't work
Camera application crashes
Video recording stops
Camera fails after repair

Basic camera troubleshooting

1. Close and reopen Camera

Completely close the Camera application and reopen it.

2. Switch cameras

Switch between front and rear cameras.

Also test available zoom levels.

This can help identify whether the issue affects one camera module rather than the complete camera system.

3. Remove accessories

Remove:

Magnetic accessories
Lens attachments
Thick cases
Camera protectors

Some accessories can interfere with camera operation or stabilization.

4. Clean the lenses

Use a clean microfiber cloth.

Fingerprints can create:

Haze
Glare
Poor low-light images
Apparent focusing problems

5. Restart and update iOS

Restart the device and install applicable iOS updates.

7. Camera Shaking or Vibrating

Persistent camera vibration is different from ordinary autofocus movement.

Possible causes include:

Stabilization-system damage
Camera-module failure
Physical impact
Strong vibration exposure
Magnetic accessory interference
Previous camera repair

Test the camera without the case or magnetic accessory.

If the image continues visibly shaking across multiple applications, hardware inspection may be necessary.

8. Camera Black Screen

If Camera opens to a black image:

Switch front/rear cameras.
Close Camera.
Restart the iPhone.
Test the camera in another application.
Update iOS.

If one camera consistently works and another does not, the problem may involve an individual camera module.

If every application fails to access the same camera, hardware becomes more likely.

9. Camera Problems After Replacement

The iPhone 13 generation supports Apple's Repair Assistant for several repaired components, including battery, display, front camera and rear camera. Apple states that supported repairs may require the device to be updated and the repair process completed through Settings → General → About → Parts & Service History.

If a camera problem started immediately after repair:

Update iOS.
Check Parts & Service History.
Look for Finish Repair or another part-related message.
Confirm that the correct part was installed.
Have the physical installation inspected if the issue persists.

10. iPhone 13 Face ID Not Working

All four iPhone 13-family models support Face ID through the TrueDepth camera system.

Common errors include:

Face ID is not available
Unable to activate Face ID
Face ID doesn't recognize the user
Face ID stops working after screen repair
Face ID stops working after front-camera repair

Troubleshooting

Open:

Settings → Face ID & Passcode

Confirm that Face ID is enabled for the required features.

Then:

Clean the front sensor/camera area.
Remove anything obstructing the TrueDepth system.
Restart the iPhone.
Update iOS.
Try Reset Face ID.
Configure Face ID again.

Important diagnostic clue

If Reset Face ID works and the phone successfully enrolls a new face, the TrueDepth hardware is at least communicating sufficiently for enrollment.

If enrollment repeatedly fails with a Face ID unavailable message, hardware or repair-related problems become more likely.

11. Face ID Failed After Screen Repair

If Face ID stopped immediately after display or front-camera work, investigate the repair before repeatedly resetting the phone.

Possible causes include:

TrueDepth component damage
Flex-cable damage
Incorrect installation
Incomplete repair configuration
Front sensor obstruction
Replacement-part issue

Apple currently includes display and front-camera repairs among the iPhone 13 components supported by Repair Assistant.

Check:

Settings → General → About → Parts & Service History

and complete Finish Repair when applicable.

12. iPhone 13 Wi-Fi Problems

The iPhone 13 family supports Wi-Fi 6 (802.11ax) with 2×2 MIMO.

Typical problems include:

Wi-Fi won't connect
Incorrect password despite correct password
Wi-Fi disconnects
Internet unavailable despite Wi-Fi connection
Slow Wi-Fi
Wi-Fi option unavailable or greyed out
Poor Wi-Fi range

Step-by-step troubleshooting

Step 1 — Determine whether Wi-Fi or Internet is failing

A Wi-Fi icon does not guarantee Internet access.

Test another device on the same router.

If every device fails, troubleshoot the router/ISP rather than the iPhone.

Step 2 — Toggle Wi-Fi

Go to:

Settings → Wi-Fi

Turn Wi-Fi off, wait briefly and turn it back on.

Step 3 — Forget the network

Select the network and choose:

Forget This Network

Reconnect and enter the Wi-Fi password.

Step 4 — Restart both devices

Restart:

iPhone
Router/access point

Step 5 — Disable VPN temporarily

A VPN or filtering application can sometimes make a healthy Wi-Fi connection appear broken.

Step 6 — Reset network settings

If necessary:

Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings

This does not normally erase photographs and applications, but it removes saved networking information such as remembered Wi-Fi configuration, so ensure you know necessary passwords.

13. Wi-Fi Greyed Out

If the Wi-Fi control is unavailable:

Restart the iPhone.
Allow an overheated device to cool.
Update iOS.
Reset network settings if possible.

Persistent unavailable Wi-Fi, especially when accompanied by Bluetooth problems, can indicate hardware trouble.

14. iPhone 13 Cellular, SIM and 5G Problems

The iPhone 13 generation supports 5G and Gigabit LTE, although supported bands and technologies differ between regional models.

Common complaints include:

No Service
SOS/limited-service indication
Searching
Calls dropping
Mobile data not working
5G unavailable
Weak signal
SIM not detected
eSIM activation problem

Troubleshooting sequence

1. Check whether the carrier has an outage

If several phones using the same provider fail in the same location, investigate the carrier network first.

2. Toggle Airplane Mode

Turn Airplane Mode on briefly, then off.

This forces the phone to reconnect to available networks.

3. Restart the iPhone

Restart normally.

4. Check cellular settings

Open:

Settings → Cellular/Mobile Data

Verify that the required line is enabled.

5. Check carrier settings

Open:

Settings → General → About

Wait briefly. If a carrier-settings update is available, iOS may prompt you.

6. Test another location

Buildings, basements and heavily shielded rooms can significantly reduce cellular reception.

7. Reset network settings

Use the network reset only after recording important Wi-Fi credentials.

15. 5G Not Showing

Not seeing a 5G symbol does not necessarily mean the iPhone is defective.

5G availability depends on:

Carrier
Subscription/plan
SIM/eSIM provisioning
Location
Network coverage
Regional iPhone model
Carrier configuration
Network congestion and deployment

Test the device in a confirmed 5G coverage area before assuming a hardware fault.

16. iPhone 13 Charging Problems

The iPhone 13 generation uses a Lightning connector rather than USB-C. The standard iPhone 13 specifications list fast charging, MagSafe wireless charging and Qi wireless charging.

Common problems include:

Not charging
Charging intermittently
Cable must be positioned at an angle
Slow charging
Charging stops
MagSafe not charging
Wireless charging unreliable
Charging stops near 80%
Phone becomes hot while charging

Wired charging troubleshooting

Step 1 — Inspect the Lightning connector

Use a light to inspect the port.

Pocket lint can become tightly compressed inside the connector and prevent the cable from seating correctly.

Do not insert conductive metal objects into the connector.

If cleaning is required and you are uncertain about doing it safely, have the port professionally inspected.

Step 2 — Test another cable

Use a known-good compatible Lightning cable.

Step 3 — Test another power adapter

Try a reliable power adapter.

Step 4 — Test another outlet

This eliminates mains-supply and extension-board issues.

Step 5 — Restart the phone

Restart and test again.

17. iPhone Stops Charging at 80%

Charging stopping around 80% does not automatically indicate battery failure.

Apple explains that Optimized Battery Charging can reduce the amount of time an iPhone remains fully charged. Charging can also be limited when the battery becomes too warm, with charging resuming when temperature conditions improve.

Therefore check:

Device temperature
Charging environment
Optimized Battery Charging
Whether the behavior occurs every time

Move an unusually warm phone to a cooler location and allow it to cool naturally.

18. iPhone 13 Slow Charging

Charging speed can be affected by:

Low-power adapter
Poor cable
Heat
Heavy application usage
Gaming while charging
Video streaming
Wireless charging alignment
Battery temperature
Battery condition

Apple notes that processor-intensive apps, camera use and high-quality video streaming can reduce charging speed, while excessive temperature can temporarily place charging on hold.

For diagnostic testing, charge the phone while the screen is off and avoid heavy applications.

19. MagSafe and Wireless Charging Problems

If wired charging works but wireless charging fails:

Remove the case.
Remove cards or objects between phone and charger.
Reposition the phone.
Test another wireless charger.
Test another power adapter supplying the wireless charger.
Restart the iPhone.
Allow the device to cool if hot.

If MagSafe works only intermittently with one accessory but works normally with another, the accessory or its power supply is the likely cause.

20. iPhone 13 Overheating

An iPhone becoming warm is not automatically overheating.

Heat production is normal during:

Charging
Gaming
Camera recording
Video editing
Navigation
Large downloads
Initial device setup
Backup restoration
Major iOS updates
Heavy 5G use

The more concerning situations are when the iPhone becomes extremely hot during light use, repeatedly displays temperature warnings, shuts down because of temperature or remains hot while apparently idle.

Apple recommends avoiding use or charging in ambient temperatures above approximately 35°C (95°F) because high temperatures can permanently reduce battery lifespan.

What to do

If the phone becomes unusually hot:

Stop charging.
Stop gaming or other intensive applications.
Move the device away from direct sunlight.
Remove a case if it is trapping significant heat.
Move the device to a cooler environment.
Allow it to cool naturally.

Do not place an overheated iPhone in:

Refrigerator
Freezer
Ice
Water

Rapid temperature changes and condensation can damage electronics.

21. Overheating While Charging

Some warmth during charging is normal.

Investigate further when:

The phone becomes excessively hot.
Charging repeatedly stops because of temperature.
Battery drains despite being connected.
The Lightning connector becomes abnormally hot.
The adapter or cable shows discoloration or physical damage.

Test with a known-good charger and cable.

Apple explains that an iPhone may temporarily limit charging when temperature conditions are excessive.

22. Overheating After an iOS Update

Temporary increased temperature following an update can result from background work such as:

Search indexing
Photo analysis
Application updates
Cloud synchronization
File optimization

If excessive heat continues well beyond the post-update period:

Check Battery usage.
Update all applications.
Restart.
Check available storage.
Check for another iOS update.
Investigate applications showing abnormal background activity.

23. Recommended Diagnostic Order for Any iPhone 13 Problem

Use this order to avoid unnecessary resets and repairs:

Level 1 — Physical inspection

Check:

Cracks
Liquid exposure
Bent enclosure
Damaged Lightning port
Swollen battery
Damaged cameras

Level 2 — Restart

Restart normally or force restart if frozen.

Level 3 — Update

Update:

iOS
Applications
Carrier settings when applicable

Level 4 — Isolate the problem

Test:

Another charger
Another cable
Another Wi-Fi network
Another SIM where appropriate
Another application
Front versus rear camera
Wired versus wireless charging

Level 5 — Check Settings

Inspect:

Battery
Battery health
Cellular settings
Wi-Fi
Face ID
Storage
Parts & Service History

Level 6 — Reset only the affected subsystem

For networking problems, reset network settings before considering a full device erase.

Level 7 — Back up and perform advanced software troubleshooting

Only proceed to full restore/erase procedures after ensuring important data is backed up.

Level 8 — Hardware diagnosis/service

Seek repair when the evidence consistently points to hardware.

24. When Hardware Repair Is More Likely

Professional inspection should be considered when:

Display has permanent lines.
Touch fails in fixed areas.
Screen separates from the body.
Battery is swollen.
Lightning port is physically damaged.
Phone overheats while idle despite software troubleshooting.
Camera shakes constantly.
One camera module consistently fails.
Face ID cannot be configured.
Wi-Fi and Bluetooth remain unavailable.
Cellular service fails with multiple known-good SIMs/networks.
Pink-screen crashes repeatedly occur with other signs of hardware instability.
Problems started immediately after physical impact or liquid exposure.

Apple-certified service providers have access to Apple parts, tools, diagnostics and repair resources.

25. Important Repair Note for iPhone 13 Owners

Because the iPhone 13 family is now several generations old, many devices have already undergone battery, screen or camera repairs.

Therefore, always check:

Settings → General → About → Parts & Service History

when troubleshooting unexplained problems on a previously repaired phone.

Repair Assistant currently supports several iPhone 13 repair categories, including the battery, display, front camera and rear camera. Apple states that the latest iOS version, an Internet connection and sufficient battery level may be required to complete supported repair configuration.

26. Quick Symptom-to-Cause Reference

Symptom	Likely Areas to Investigate
Battery drains quickly	Battery aging, apps, weak signal, background activity
Battery drops overnight	Background apps, cloud sync, cellular signal, battery condition
Pink screen once	Software/app/display event
Pink screen repeatedly + restart	iOS/system instability or hardware
Permanent colored lines	Display hardware
Camera black in one mode	Individual camera/module issue
Camera constantly shakes	Stabilization/camera hardware
Face ID unavailable	TrueDepth obstruction, configuration or hardware
Wi-Fi disconnects	Router, VPN, settings, iOS
Wi-Fi greyed out persistently	Software or wireless hardware
No Service	Carrier, SIM/eSIM, coverage, settings or hardware
5G missing	Coverage, carrier, plan, provisioning or model
Cable only works at an angle	Cable or Lightning-port contamination/damage
Charging stops near 80%	Temperature or charging optimization
Phone hot during gaming	Often expected under sustained workload
Phone very hot while idle	Background process, battery or hardware investigation needed

FAQ

1. Why is my iPhone 13 battery draining so fast?

Common causes include battery aging, background applications, weak cellular signal, high display usage, navigation, camera activity, VPN software and post-update background processing.

2. Is battery drain normal on an older iPhone 13?

Some reduction in runtime is expected as lithium-ion batteries chemically age. Check Battery Health and actual application usage before deciding whether replacement is necessary.

3. Why does my iPhone 13 screen suddenly turn pink?

A temporary pink screen can be associated with software/application instability, while persistent pink coloration can indicate a display-related problem. Repeated pink-screen crashes require deeper diagnosis.

4. Does a pink screen mean the display must be replaced?

No. Update iOS, restart the phone and determine whether the problem is temporary or persistent before concluding that the OLED display is defective.

5. Why does my iPhone 13 restart after showing a pink screen?

Repeated pink-screen restarts can indicate operating-system instability or a lower-level hardware issue. Back up the device and investigate diagnostic logs and hardware if the problem continues.

6. Why is my iPhone 13 camera blurry?

Clean the lens, remove lens protectors or magnetic accessories, test different camera modes and restart the phone.

7. Why does the iPhone 13 camera shake?

Persistent shaking can be associated with the stabilization system, camera-module damage, impact or accessory interference.

8. Why is Face ID unavailable?

Possible causes include obstruction of the TrueDepth system, software problems, physical damage or repair-related issues.

9. Why did Face ID stop working after a screen repair?

The TrueDepth/front-sensor system may have been affected during repair, or supported repair configuration may not have been completed. Check Parts & Service History.

10. Does iPhone 13 support Wi-Fi 6?

Yes. Apple specifies Wi-Fi 6 (802.11ax) with 2×2 MIMO for the iPhone 13 generation.

11. Why does Wi-Fi keep disconnecting?

Possible causes include router problems, weak signal, VPN software, corrupted network settings or iOS issues.

12. Will Reset Network Settings delete my photos?

No. It is intended to reset network-related configuration rather than personal photographs and applications. However, saved network information such as Wi-Fi credentials will need to be reconfigured.

13. Why does my iPhone 13 say No Service?

Check carrier outages, coverage, SIM/eSIM provisioning, Airplane Mode, cellular settings, carrier updates and network settings.

14. Why isn't 5G appearing?

5G depends on carrier support, coverage, plan, provisioning, regional model and network conditions.

15. Does iPhone 13 have USB-C?

No. The iPhone 13 generation uses Apple's Lightning connector.

16. Why does my iPhone 13 stop charging at 80%?

Temperature management and Optimized Battery Charging can affect charging above 80%. Excessive heat can temporarily limit charging.

17. Is it safe to charge an iPhone 13 overnight?

Apple states that iPhone automatically stops charging when fully charged and uses charging optimization to reduce time spent fully charged.

18. Why is my iPhone hot while charging?

Some warmth is normal because charging generates heat. Heavy apps, high ambient temperature and wireless charging can increase it.

19. Can overheating damage the battery?

Yes. Apple warns that using or charging an iPhone in ambient temperatures above approximately 35°C can permanently reduce battery lifespan.

20. Should I factory-reset my iPhone for every problem?

No. A factory reset should generally be a later troubleshooting step. Start by isolating the affected component, restarting, updating and performing subsystem-specific troubleshooting.

21. Can a swollen battery push the iPhone 13 screen upward?

Yes. Screen separation can be consistent with internal battery swelling. Stop charging and seek professional inspection rather than pressing the display back into place.

22. Should I use a metal pin to clean the Lightning port?

No. Conductive or sharp tools can damage contacts or create electrical problems. If compacted debris cannot be removed safely, have the connector professionally cleaned.

23. Why does my iPhone 13 work on Wi-Fi but not cellular data?

Check whether cellular data is enabled for the line and application, verify carrier service and provisioning, and test the SIM/eSIM and network settings.

24. How can I tell whether a camera problem is hardware-related?

Test front and rear cameras, multiple camera modes and another camera-enabled application. If the same physical camera fails everywhere, hardware becomes more likely.

25. Where can I check whether my iPhone 13 has replacement parts?

Open:

Settings → General → About → Parts & Service History

when that information is available for the device and repair.

Final Technical Notes

The most effective way to troubleshoot an iPhone 13-family device is to avoid assuming that every symptom is caused by iOS or, conversely, that every symptom requires hardware replacement.

An older iPhone 13 can simultaneously have an aged battery, years of software changes and one or more replacement parts. Establish a timeline:

When did the problem begin? → What changed immediately beforehand? → Can the problem be reproduced? → Does it affect one component or the whole device?

That approach is particularly important for pink screens, camera failures, Face ID errors, overheating and abnormal battery drain.

Before any factory reset, restore or hardware repair, make sure important user data is backed up. For persistent hardware symptoms, battery swelling, liquid damage, severe overheating or problems following repair, professional inspection is preferable to repeated resets.