I am new here, but I have also had these problems as described above. The other day I went to the Sprint store and of the clerks has also been having the problem. He said that some of the phones were just defective and as soon as he replaced his, everything has been fine. So he replaced mine as well, and I haven't had any problems since. No freeze-ups, lock-ups, and my phone wakes up for all texts/calls! You are right about the software update. The software will enable rev A for EVDO and GPS I believe as well as fix some of these bugs that a lot of people have been having. If you have had your phone for less than 30 days, sprint will replace your phone. Just make sure you tell them that it freezes up. Hope this info helps!