Mobile phone technology moves a lot in two years. I have a phone that was new and exciting 24 months ago. It's running Symbian S60. Meanwhile, whole generations of iPhones have come and gone, as have several versions of Google's Android. Windows Phone 7 has been released, Nokia announced their undying love for it and canned development on not one but three of their own operating systems.
It's understandable that a 24-month warranty on mobile handsets might upset some of these telecom companies. It's just too long to keep supporting hardware and software in a fast-paced industry like that.
Mokalus of Borg
PS - My pone is due to be replaced now.
PPS - I'll be going with an Android model.