ive been having wierd battery issues with my iphone where it will randomly shut off and say the battery is dead when it shouldnt be. i was almost ready to send it in to replace the battery, so i put my sim in an old phone and when i started using my iphone one night for apps the battery lasted as long as it did before it started sucking.. so i put my sim back in hoping it was all ok and sure enough the battery was dead in minutes.. please give any advice.. i went on the apple support forum and noone would respond. this cant be the first time this has ever happend. thank you!!