Sleep mode has a bug on th A34. It turns on even after wake up time (because wake up time is no longer detected). I've had an A34 and A35 before and this didn't happen.When it's on, it also kills all my alarms
You can get it in recovery mode by pressing the Volume up and power buttons.The cause is most likely a buggy update. Before wiping the cache partition, check if you have any update patches available
