I got a new S4 mini just yesterday, it runs 4.2.2, it happens to overheat while it is charging and also while i'm using it for simple things as whatsapp or facebook. The battery drained in about 3 or 4 hours, i had the GPS off, data off, sync off, screen is on low brightness. Now i'm charging it and it charges too slow. I would like to know if there is something i can do, or if i should just send it to warranty. Please help me, i'm very dissappointed since i just have had it for 1 day and i barely used it