I just got a used galaxy s4 the other day and am now starting to have some extremely annoying issues. I have never used android os before this phone and have no idea how to fix them. 1. Touch wiz: I recently reformatted my phone for like the 3rd time and am now having a huge issue with that app. Starting yesterday, two options for this app would randomly pop up (touchwiz home and touchwiz easy) after I hit the home key and will force me to select either one or the other. I tried going into my application manager and disabling it... Nothing. I can't delete it either. How do I fix this issue?, 2. Default aps. Whenever I try to set a default it tells me to go into my applications manager and reset them. I do and nothing happens... How can I fix this issue? For some reason all of like 10 minutes ago all my icon customisations and everything else was rearranged. I have no idea why. Could this have something to do with the first issue I listed? Maybe a virus? This is an att phone and I was told it is still under warranty.. These issues something I might have to call att about possibly? Some help would be GREATLY appreciated. I love this phone just not the quirks I'm having with it. Also, any recommendations for aps/ useful hints?