Battery optimization unavailable

[ruks sayaju]

today i wanted to make sure all apps have battery optimization and found out that this last isn't available for google play service.
please how can i enable battery optimization for it.

 

[Ry]

today i wanted to make sure all apps have battery optimization and found out that this last isn't available for google play service.
please how can i enable battery optimization for it.

Which phone?

 

[ruks sayaju]

Gionee s6 pro