Getting "Error code -507" from the Play Store and "Install failed, user restricted" when installing an APK I have a Chinese-branded phone from Spreadtrum. I can't install any apps both from the Play Store and APK.

Play Store gives "Error code: -507".



Installing an APK using ADB gives "Failure [INSTALL_FAILED_USER_RESTRICTED]" 



There is something limiting this phone.

Is there any way to install an app on this phone?
Remove you Google account from your phone and then add it again.
This might work for you. 

source