Hmm… This is what most of the user don’t like to do ~ hard reset your own phone. But I am going to hard reset my HTC HD2 in the near future. Why? Most of the applications like calculator, Google Maps, Garmin Mobile XT do not able to rotate to landscape mode anymore. Luckily, Opera Mobile 10 which heavily use still working. And HTC album and music player are working fine too. Not sure why my phone behave like this. Maybe I installed some ‘dangerous’ applications… Who know? Anyway, there is the guide to hard reset HTC HD2 that I took from HTC website.