Does anyone have a good tutorial to share about hacking cellphones or, more specifically, the e71x? This will be my first smartphone so I'm pretty happy for having one but I also want to make the best of its technology (mainly playing GBA or SNES but suggestions are welcome). The problem is that I never hacked a phone before, only game consoles. If I do attempt to successfully hack my phone's firmware, does that always result in me losing service from my phone provider or only a slim chance of it happening? Please, share any and all important or useful information you know.