How to Fix OnePlus 8 Pro with Warning Camera Failed Error?

The other way of the reboot is as follows:

Press and hold down the Power and Volume down buttons at the same time.
Hold the Power button down for 10-15 seconds, or until the phone vibrates and restarts.
If the phone turns off let go then press power again for 1-2 seconds to restart the phone.

Troubleshoot Camera App

Force Stop Apps

You can do is to ensure that you close all active apps and those that run in the background. Sometimes, too many apps and services running together can overwhelm the system and cause random shutdowns or overheating.

Open the app drawer and then tap Settings.
Tap on Apps & Notification.
If you’re looking for a system or default app, tap on More settings at the upper right (three-dot icon).
Select Show system apps.
Find and tap the app you want to force stop.
Tap Force Stop.
That was it.

Clear App Cache

Open the app drawer and then tap Settings.
Tap on Apps & Notification.
Now, tap on See all apps.
If you’re looking for a system or default app, tap on More settings at the upper right (three-dot icon).
Select Show system apps.
Find and tap the app you want to clear the cache.
Tap Storage.
Tap the Clear Cache button.
Restart the device and check for the problem.

Clear App Data

Open the app drawer and then tap Settings.
Tap on Apps & Notification.
Now, tap on See all apps.
If you’re looking for a system or default app, tap on More settings at the upper right (three-dot icon).
Select Show system apps.
Find and tap the app you want to clear the data.
Tap Storage.
Tap the Clear Data button.
Restart the device and check for the problem.

Update Camera App

To check for Play Store app updates on your OnePlus:

Open Play Store app.
Tap More settings icon at the upper left (three horizontal lines).
Tap My apps & games.
Tap Update or Update All.

If you are on Cellular Data connection, we suggest that you update via wifi only to avoid additional charges. Here’s how:

Open Play Store app.
Tap More settings icon at the upper left (three horizontal lines).
Tap Settings.
Tap App download preference.
Select Over wifi only (select Over any network if you don’t have wifi).
Tap Done.

Make sure to also keep your apps updated all the time by enabling auto-update option.

Tap Auto-update apps.
Tap Over wifi only (select Over any network if you don’t have wifi).
Tap Done.

Update System Software

Sometimes the glitch is with outdated software updates, installing software updates can solve the overheating issues in your OnePlus 8 Pro.

Open the app drawer and then tap Settings.
Scroll down and tap on System.
And then tap on System Updates.
If a system update is available, you’ll see the option on the screen. Tap Download and Install.
If your system is up to date, you will see a message stating that the system is up to date.

Here are a few things that are needed to take care while updating your OnePlus 8 Pro or any device:

Your device must be connected to the internet.
Your device must have enough space to download the update.
Your device should have enough charge, more than 50% to install the update.

Reset App Preferences

Open the app drawer and then tap Settings.
Tap on Apps & Notification.
Tap on More settings at the upper right (three-dot icon).
Select Reset app preferences.
Restart your device and check for the problem.

Troubleshoot apps in Safe Mode

In case you don’t know what is safe mode, in safe mode, the system temporarily disable all third-party applications you installed on your device. By doing this we can figure out which app is occurring the problem. Follow the below step to turn Safe Mode on:

Turn OFF the OnePlus device.
Press and hold the Power button.
On the screen, press and hold Power off.
Tap Ok to reboot into Safe mode.

After figuring out the apps which are creating the problem, follow the below steps to uninstall it(if required):

Open the app drawer and then tap Settings.
Tap on Apps & Notification.
Now, tap on See all apps.
Tap on an app, then tap Uninstall.
Tap Ok to continue.

Clear Cache from Recovery Mode

In case you don’t know what is recovery, the first thing the bootloader rings up is the recovery. Recovery Mode refers to a special bootable partition, which contains a recovery application installed in it. And you can fix some problems with your phone. Follow the steps to clear cache from recovery mode:

Switch off your OnePlus device.
Now press and hold the Power and Volume Down buttons simultaneously until you see the recovery mode options on your device.
Once you see the recovery options, you can let go of the two buttons.
The Recovery screen menu will now appear.
Use the Volume button to go to Wipe Cache Partition then press the Power button to confirm the selection.
Wait until your device wipes out all cache or temporary data from the system partition.
Press the Power button again to reboot the device.

This clears all the temporary data from the device. And then it works like new.

Reset Your Device

Disclaimer

Factory reset will delete everything, so you want to make sure that you create a copy of your data such as photos, videos, documents, texts, etc. ahead of time.

Factory Reset

Open the app drawer and then tap Settings.
Tap on then tap on System.
Now, tap on Reset options
Tap Erase all data (factory reset).
Finally, tap on RESET PHONE.
Don’t select the internal storage checkbox. Select it only if you are sure you have backed up everything on internal storage, including photos and videos, music, documents, and other files.
Tap the ERASE EVERYTHING button now and let the phone do its thing.
The device would restart automatically after performing the factory reset.

Hard Reset

First, power off your phone normally.
To turn it on, press and hold the Volume up + Power buttons simultaneously.
Don’t release them until you see the OnePlus logo on the screen.
Tap on the ‘Wipe data/Factory reset‘ option.
Now tap on the ‘Wipe data/Factory reset‘ option to confirm your selection.
The phone will reset and on the new screen, use the Volume up button to scroll to the ‘Reboot system now.’ This will reboot your phone normally and that’s it!

Conclusion

These were the few methods to troubleshoot the problem/issues you were facing with your OnePlus 8 Pro. Additionally, you can always contact tech support or visit your local OnePlus store or Service Center so a qualified Samsung technician can examine the issue.

Do you own an OnePlus Device, or any Android device and need these types of simple tutorials? Then stay tunned to GetDroidTips’ Android Tips & Tricks column because many simple tutorials for OnePlus are coming soon.

If you have any queries regarding this, the comment section always available for you.

OnePlus 8 Pro Troubleshooting Guides