Battery saver shuts down everytime I open it

[swatej bhatia]

Whenever I try to just enable battery saver mode it closes . I've rebooted the phone but no result it still keeps closing .. What should I do??

 

[gabi tanase]

Me too,lumia 535,and now i don't personalize my contacts with my sound.Batery is drain fast.I wait the new bild,when is released?