My Samsung Galaxy s4 is a couple of years old. It had trouble holding a charge, so I got a new battery and problem was fixed for awhile. After several months, its back to not holding a charge. I usually charge it overnight so its at 100% in the morning. It almost instantly drops charge, sometimes down to 90% or as low as 69%. Other times, it might show 70%, I'll send a text, and it drops to 24% or other similar craziness. Sometimes it will stay on for an hour and allow a few texts or calls. Sometimes it dies instantly, wthin the first minute. About once a week it will hold the charge like a normal phone for a couple or hours. Inconsistent and not dependable. If I try to use maps or anything with location services turned on, it will die immediately, so I leave that off.