My battery saver mode on Pokemon go does not work. When I turn my phone upside down, it does not dim the screen. How can I make it work?
Battery saver mode works by detecting if your phone is in an "idle position" and making the screen black. Make sure the setting is ON, then restart your game. Try placing your phone on a table and seeing if the screen turns black.
If it doesn't, it could be a hardware problem with your phone's internal gyroscopes
On Android I wouldn't recommend using the battery save mode at all. Three of my friends and myself have had issues with the game disconnecting from the game servers and being unable to reconnect afterwards, should the game go to power saving mode. Phones are One+ 1, One+ 2 and a couple of Samsungs. The issue is consistent too: Every time PoGo activates the battery save mode the connection is lost until the game is restarted.
This is an issue with the version 0.29.0, it might be resolved in the very near future.