I have a HTC wildfire S. Bought it last june. There was a system update from android 2.3.4 to android 2.3.5. I updated my phone and it was fine for a while. But now it's giving me problems. The phone gets hung often, especially when I'm using facebook and whatsapp. It becomes really slow and even force closes sometimes. And when I try unlocking the screen, the phone switches off and reboots sometimes. I have very few apps installed, just the basic ones. No games or any fancy stuff. I have dropped my phone many times. Is this because of that? Is there any way I can go back to 2.3.4? Because I really don't like the new version.