4.4.2 is the WORSE Android OS ever! Glad to finally find out what the problem is - battery usage - as it confirms my suspicions. 4.3 was perfect, stable, and never problems. After 4.4.2 all kinds of problems - Bluetooth is useless even with other Samsung Devices (I have a Samsung Note2). While playing music, the music speeds up and slows down and starts dragging. Although the update may look good, the bottom line is that it has too many features that the phone just simply won't handle, and the result is that it makes full functionality of the phone impossible. I use this phone for business, so to have an update crash a phone this severely with problems is unacceptable. There should be a fast, easy and convenient way to remove the update and go back to 4.3, which Samsung says is impossible. Google, shame on you for putting out an Android version that simply does not work. Samsung, shame on you for putting the update out there without fully testing it on all current Samsung devices. And AT&T, shame on you for placing all the blame on Samsung and Google! As customers and people who are paying for services and products, what is needed is a class action lawsuit to put an end to us being victimized by developers who are not properly testing their software!!!!! Lawyers, where are you and let's get this going!