I've recently started experiencing issues with my S4 (out of warranty) which almost are making me want to go back to my S2 Sky-Rocket. I am running on AT&T Unlimited Go-Phone plan. It all began in early February when I started figuring out that I wasn't answering texts (extremely important to me as many clients text me for showings instead of calling me). I usually work from the home office, hence it could not be an issue with my location (I constantly have 3-4 bars of service and LTE). Towards the end of February my phone intermittently cut all service completely and text messages would not execute until the service came back on (usually 45 seconds - 1 minute). This could happen every hour during the day from 6AM to 2AM. I finally got sick of it and called AT&T who said the service in my area is one of the best in the state (the AT&T tower is walking distance from my house). They said they'd monitor my phone and look into it for a week then get back in touch. One week later they called and said everything is working great and that my device was defective. I went to the AT&T store and they switched my SIM card out for a new one, this seems to help for around 2 days, until it all went to shit again. I decided to tough it out and think the phone would fix itself. In the beginning of March the phone was in my back-pocket with Wi-Fi, GPS, Skype, Gmail, Internet all running simultaneously and heard a pop (my screen developed a notorious crack in the bottom left hand corner - no it didn't fall on the ground). I called Samsung who obviously said my phone was out of warranty and that I'd need to pay $200 for a new screen. Now it's almost April and earlier this week my phone began suddenly completely shutting off while I was texting and/or on a phone call for example. I love Android and have been running it on phones since it was around, but with the luck I'm having with this phone and finding it hard to say I will be sticking around much longer. Any ideas would be greatly appreciated.