编辑 iPhone 12 Troubleshooting

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Solve all your iPhone 12 problems with this troubleshooting page. It's full of symptoms you may experience with your device accompanied by causes and solutions to get your device working again. This page will focus on issues with the iPhone 12, but some solutions may be applicable to problems with the iPhone 12 Mini and iPhone 12 Pro Max.

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[redirect|https://www.ifixit.com/Troubleshooting/iPhone_12]

{table
|width=100%
|format=c:c:c:
| Problem (Symptom)
| Likely Cause
| What to Check
|--
| Won't Turn On
| [[iPhone 12 Will Not Turn On#Section_Battery_Discharged|Battery Discharged]]
| Charge iPhone for at least 10 minutes
|--
| Won't Turn On
| [[iPhone 12 Will Not Turn On#Section_Firmware_Crash|Firmware Crash]]
| Perform a forced restart to fix firmware crash
|--
| Won't Turn On
| [[iPhone 12 Will Not Turn On#Section_Bad_Battery|Bad Battery]]
| Check if iPhone turns on when plugged; battery may be degraded
|--
| Speaker Issues
| [[iPhone 12 Speaker Issues#Section_Volume_Turned_Down|Volume Turned Down]]
| Turn up the volume using the button or through the phone's software
|--
| Speaker Issues
| [[iPhone 12 Speaker Issues#Section_Phone_Case_Obstructing_Speaker|Phone Case Obstructing Speaker]]
| Remove the case and test the speakers again; remove screen protector if it obstructs the earpiece speaker
|--
| Speaker Issues
| [[iPhone 12 Speaker Issues#Section_Software_Glitch|Software Glitch]]
| Turn off Bluetooth, perform a forced restart; rule out software issues
|--
| Speaker Issues
| [[iPhone 12 Speaker Issues#Section_Broken_Receiver|Broken Receiver]]
| Check if sound issues are during calls; utilize Apple's service program or follow the iPhone 12 Earpiece Speaker replacement guide (Note: FaceID may be disabled)
|--
| Speaker Issues
| [[iPhone 12 Speaker Issues#Section_Broken_Speaker|Broken Speaker]]
| Clean speaker holes; if ineffective, follow the iPhone 12 Loudspeaker Replacement guide
|--
| Unresponsive Screen
| [[iPhone 12 Unresponsive Screen#Section_Operating_System_Freeze|Operating System Freeze]]
| Perform a force reset
|--
| Unresponsive Screen
| [[iPhone 12 Unresponsive Screen#Section_Broken_Digitizer|Broken Digitizer]]
| Replace the entire display assembly; follow the iPhone 12 Screen Replacement guide
|--
| Text Problems
| [[iPhone 12 Text Problems#Section_Software_Glitch_Text|Software Glitch]]
| Restart the phone; reset network settings; toggle iMessage and MMS settings
|--
| Text Problems
| [[iPhone 12 Text Problems#Section_Network_Hangup|Network Hangup]]
| Reset network settings; toggle iMessage and MMS settings; contact service provider if necessary
|--
| Camera Not Working
| [[iPhone 12 Camera Not Working#Section_App_Malfunction|App Malfunction]]
| Use default camera app; close background applications; restart phone
|--
| Camera Not Working
| [[iPhone 12 Camera Not Working#Section_Camera_is_Obstructed|Camera is Obstructed]]
| Ensure the lens is not blocked; clean the lens with a microfiber cloth
|--
| Camera Not Working
| [[iPhone 12 Camera Not Working#Section_Software_Outdated|Software Outdated]]
| Update iOS; turn off VoiceOver; fix Flash Desynchronization Glitch; perform DFU reset
|--
| Camera Not Working
| [[iPhone 12 Camera Not Working#Section_Broken_Camera_Module|Broken Camera Module]]
| Follow the [guide|140583|iPhone 12 Rear-Facing Cameras Replacement guide]
}

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