Samsung 557 camera can't open and display "Camera Failure ErrorCallback.onError(-2)".

According to your description, it shows that the camera failure may be caused by conflicts in installing third-party camera software or camera program errors. Please try the following methods:

1. Try to uninstall other third-party camera software (Baidu Mobile Assistant) and restart your phone.

2. try to go to phone settings-application management-all-camera programs-clear cached data.

3. Back up the data of the mobile phone and restore the factory settings of the mobile phone.

if all the above methods fail, it is recommended that you take the three-guarantee certificate and send it to Samsung service center for maintenance.

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