Generally what happens is that when you try to open Camera App you end up facing ‘Can’t connect to camera’ which is very unfortunate to face and most of the time switching to home screen and back to the app resolves the issue but not in every case. So just follow the below given fixes one by one until your issue is resolved.
Possible Reasons for this Error:
You haven’t closed the app properly just pressed the home screen button to fasten the process instead of using the back button.
There might be apps conflict where some other apps might be using the Camera.
Method -1 : Quickest One (Temporary)
If you are in hurry and want to click some snaps without spending too much time on fixing the issue then this is the best and fastest way to go through.
Completely Exit the App and Try relaunching the App Once Again hope this time you won’t face the same error.
Check for other apps that might be using camera in Running Apps list and try closing them first. Go to Settings>Battery and check if mm-qcamera-daemon is running kill this app and then try running Camera Application once again.
Method – 2 : Permanent One
The above mentioned methods are some temporary ways to fix the issue and won’t help in case of serious issue therefore in such case what you need to do is to try clearing your Camera App Old Cache and Data. It has the highest success rate and is good in long term effect.
Go your Android Phone Settings -> Apps -> ALL -> Select Camera.
Here Just Click on Clear data and Clear Cache as shown below.
That’s it now you will no longer face the same error in future.