So I'm having an issue with my battery life, The other day I left my phone completely run out of charge and die during the night. The next day I woke up and recharged it fully. Now my phone does last more then an hour or two off the charger with use when before I could use my phone most of the day and have no issue with battery life. I don't understand why letting my battery completely drain and then recharging it would cause it to act like this.