Sony Issues

See here for introductory information about manufacturer specific issues...

Overview

Sony devices have a feature called 'STAMINA Mode'.  This feature will break all background processes if enabled.

Resolution

- Settings > Power Management > STAMINA Mode > Make sure that STAMINA Mode is deactivated.

You can also configure your device to enable STAMINA Mode once you reach a certain battery level.  Make sure you disable this as well as we don't want STAMINA Mode to get re-enabled.