I tend to get a new phone every twelve months as a birthday present, but likely going to have that as every twenty four now that I have other presents in mind.

Following on from my ongoing love for BlackBerry (despite all of its flaws), I've switched to Android. I first got the 8520, followed by the 9300, and then the 9360 before getting a Samsung Galaxy S4. Absolutely love it though, and can't fault it (yet!)

I find that the average ten hour battery life of the S4 is no good for me, so I have to keep the 9360 running alongside it, which also serves me for approximately 8 hours.
I think if I had decided to get the iPhone 5 rather than the S4, I would have had to jailbreak it to customize it slightly. That's one reason I didn't like BlackBerry so much - everything was set in its ways and it was far too simplistic. I like to be able to change what I like, when I like (Android!!)