crwdns2934241:0crwdne2934241:0 rokin154

crwdns2934249:0crwdne2934249:0:

If it's under warranty the best thing to do is to take it back for a new one.

But you can try running the phone down to zero (or as close as you can get) and try a full charge.  Sometimes the battery monitoring chip needs to go all the way down so it can calibrate.

crwdns2915684:0crwdne2915684:0:

open