Camera busy

There are many reasons for this error to happen. It most often shows up on devices running Android 5.1 Lollipop, Android 6.0 Marshmallow, Android Nougat 7.0 and some devices that run Android 4.4 Kitkat.
Here are some suggestions how to fix it:
- Restart your phone - sometimes you need to do it multiple times until the error is fixed.
- Factory reset your device - you can find step-by-step tutorials specifically for your Android device on how to do this.
- Contact your manufacturer - if nothing else works, try getting external help from your manufacturer.