This issue occurs on devices like the OPPO R7 when the ReconnectService.enqueueWork method throws the error Unable to start service. User 0 is restricted.
Summary:
Issue: The ReconnectService.enqueueWork method in OPPO phones throws the error Unable to start service. User 0 is restricted.
Cause: Some ROMs have phone states like power saving mode, which restrict permissions to start a Service. Upgrade to the latest SDK version to resolve this.