When I first had my s5 a fully charged battery would last 2 days but now its around half a day, I only make 3-4 calls maybe 2-3 txts and spend around 1/2 an hour on the internet. I have only got 23 apps that I have installed myself and a countless number that Samsung keeps sending. I am thinking of resetting to factory settings but would I loose the info on my sim card and what else would I have to do before I reset the phone.