I have HTC mobile and its running fine with Verizon. My phone is running on android 1.6 version and then I updated it to 2.2 version. But the problem is that after receiving the update my phone is working slow and spontaneously rebooting periodically and moreover the speed of Wifi has gone down considerably. I do not have any idea of this problem. If someone have any idea or know how to fix it. I would really appreciate. Thanks.