Hello, I got up this morning and found that my new samsung s4 mini wasn't working. so, I put it on chare and found that it had gone down to 0 percent. I was concerned with this because if I put a gps app on it how fast will it go down when I am using the GPS app. So, while I could I took it back and got a HTC. This phone is running Android 4.4. I was told it had a lot faster processor I think I will like this phone better. Bill Deatherage -- Sent from my Android device with K-9 Mail. Please excuse my brevity.