Hi, everyone I have a problem with my Android phone. My battery indicator gets stuck sometimes at a level for hours even though I use it a lot. Then, after some time it starts to discharge at a normal rate until it hits 20%. From 20% to 0% it take just a few minutes to discharge regardless of what I'm doing on the phone (it can be in stand by, it makes no difference). Has anyone had this problem of knows how to fix it? Thanks a lot in advance.