My daughter has a at&t zte mavens go phone, she has had it for about 2 years now and loves her phone wants no other. But it seems to be having battery issues and it's a built in non-removable battery no doubt. I'm not sure if there has been something split on the phone or if it's the battery leaking acid it's only done this a couple of times now but I'm afraid it's battery acid which is no good for her it's almost like baby oil or grease and seems to be over heated while on charge. If anyone has had this happen or knows anything about it plz help this momma out. Thanks alot