so this the 2nd day my loyal samsung S4 active started acting up, it is at least 2 years old, very good condition, put it in a otter box 1 week after purchase and since no drops or any such had resulted in malfunctions. But recently it been turning itself off when it still has plenty of battery, like 47%, i know this for a fact because i assumed the battery died and when i plug it in, it tells me shortly after the large charge it still has. When it turns itself off it will turn itself on and get as far as the AT&T symbol before turning off again. as of today (2/24/16) the OS is up to date, i've deleted a few apps off of my phone reading that they might still be adding to the problem. any other info you might need i'll gladly provide. I'm leaving for a trip relatively soon and naturally i was going to use my phone. was going to root my phone today to remove bloatware but.... clearly this is more pressing, any help is appreciated!