I had the iPhone 4 before the thunderbolt. I wish i had it back after the update. GPS doesnt work unless on wifi, lose 3g data daily, and the random reboots are ridiculous. It doesnt matter what I am doing with the phone, from using the flashlight to checking email it will reboot. Why would verizon and htc let this build out if they knew of the reboot problems. Before the update my phone was perfect except for the mushy power button, but i could deal with that. I would wait on the thunderbolt for now and see what happens. Just my two cents