I just joined this forum to fix a problem I had with my Motorola DROID, which I got help with rather promptly. I've never had to do anything otherwise with this phone, and I'm almost done with it, but my next phone will probably get more attention in this department.
But it wasn't long ago that I was tricking LG phones like the enV2 and Dare/Versa into letting me have free VZ Nav and the like, and I fondly remember the days of customizing the RAZR to let me change the graphics, clock, ringer controls, and much more! Oh, and let's not forget tricking my Motorola V65 into letting me DUN onto VZW's 1X network back in the day! I paid $10 a month for PTT and didn't pay for Internet at home for over a year!
I've also completely disassembled and reconstructed the enV2 and Dare. I once built a fully-functional enV2 from the parts of three broken ones - and used it for three months before I sold it to someone else!
And it's not just mobile phones I like to work on: I also enjoy spending time repairing and adjusting old phones like the Western Electric 302 and 354! In fact, out of the four phones hooked up in my house, only one is Touch Tone, and I never use it!