Hi everyone! Complete noob to flashing phones here. I'm trying to use a 3rd party app to turn my S3 into a free mobile hotspot but ran into some problems. I started by using towelroot & SuperSU to root the phone. I tried both the BEETmobile hotspot and Portable WiFi hotspot apps but as soon as I go to activate it as a hotspot, I get the "Hotspot Error - you are not subscribed to the Hot spot Service. Do you want to see subscription options?" and that's as far as it gets. Is this something that can be done on the factory rom or will I have to install a custom rom? If so, can anyone recommend one? My phone: SPH-L710 with completely stock rom Android version: 4.4.2 Broadband/Software Build: NDC Kernel: 3.4.0-1368792 dpi@SWDD5612 #1 Wed Apr 30 20:46:12 KST 2014 P.S. - what does MK5 refer to? Thanks everyone!