My first phone was some shitty flip phone my GF got me for Christmas back in 2004 or 2005. I kept it until 2009 (search for the thread "The ballad of d21lewis's cell phone" to see my phone's untimely demise...).
Before that, I didn't even want a cell phone. After I got my first Smart Phone, a Motorolla Droid 2, I was hooked. I can't live without one. I'm on a Droid 4, now. Not even remotely the best phone in the world but the keyboard is a must for my lifestyle. I'm using it now and I love it. Hope they make a Droid 5 some day.