Looking for some help on understanding the battery life of my Mini. Most of the time I get about two days of life out of my Mini. I do this by charging it at about 20% and bringing it to the max so that I can use the time tracker on the battery saver. However twice now I have let the phone discharge until it shuts itself off and then I get 4 days. I have owned it since the 16Dec2013 and use it minimally. The first time I let go down to zero was about a week after I bought it and the second time was about two weeks ago. I don't remember how fast the time between recharges declined the first time but this time it is happening very fast. I don't see this as a battery issue, but as a software issue. Anyone have any thoughts on this?