Sleep mode

I gave it two stars because of the fact that when I have music playing for a minute or two phone goes to sleep. I have it plugged up to the charger and my phone still goes into sleep mode. Fix this please. And there should also be an option to shuffle all music and or albums. Picking one song at a time is kinda ridicules. It takes u out of "the zone". Please please fix this. Five stars shall be yours.

mountinPacific about Gravilux