Скачать или смотреть OnePlus 7t dead mobile solution/OnePlus 7t repair A to Z solution in hindi training

If your mobile phone is "dead" or not turning on, there are several steps you can take to try to diagnose and possibly fix the issue. Here's a general guide:

1. Check the Battery

Charge the phone: Plug your phone into a charger and let it charge for at least 15–30 minutes. Sometimes, the battery may be completely drained, and it will need some time before showing signs of life.

Try a different charger and cable: A faulty charger or cable could be the problem. Use a known working charger and cable to ensure the issue isn't with your charging equipment.

Inspect the charging port: Dirt or lint can sometimes block the charging port. Clean it gently with a toothpick or compressed air.


2. Force Restart

For most Android phones: Hold down the power button and the volume down button for 10–20 seconds.

For iPhones:

iPhone 8 or later: Press and release the volume up button, press and release the volume down button, then press and hold the side button until the Apple logo appears.

iPhone 7/7 Plus: Press and hold the volume down button and the power button until the Apple logo appears.

iPhone 6s and earlier: Press and hold the home button and the power button until the Apple logo appears.



3. Check for External Damage

Inspect the phone for any physical damage such as cracks, water exposure, or signs of overheating.

If the phone has been dropped or exposed to moisture, internal components may have been damaged. In that case, a professional repair is recommended.


4. Try Safe Mode (for Android phones)

Sometimes, third-party apps or software glitches can prevent your phone from starting. If your phone's screen works but it doesn't start normally, you can try booting in safe mode to see if a third-party app is the issue.

To enter Safe Mode (Android):

Press and hold the power button until the "Power Off" option appears.

Then press and hold the "Power Off" option until it prompts you to enter Safe Mode.

If the phone works fine in Safe Mode, an app might be causing the issue. Uninstall recently installed apps to see if the problem resolves.



5. Check for Software Issues

Perform a factory reset (if possible): If the phone is booting but acting erratically, a factory reset might help. However, this will erase all data on your device, so it's best used as a last resort.

Use recovery mode: If your phone doesn't boot normally, you can try booting into recovery mode. This allows you to wipe the cache partition, or perform a factory reset.

For most Android phones: Press and hold the power button and the volume up button at the same time to enter recovery mode.

For iPhones: Use iTunes or Finder (on macOS) to restore your device if you can’t get it to turn on.



6. Check for Overheating

If your phone is overheating, it may shut down automatically to protect itself. Let it cool down for a