I have a Treo600 model and whenever my phone is in lock mode, I am not able to receive any calls. I check my signal and have checked all the settings indicated in the owner's manual, but my phone does not ring when I have the phone set in lock mode. Its almost as if when my phone is locked, the wireless mode is off. I see full signal, I have good reception but the phone does not ring so often, I will have 5-10 voicemails at the end of a business day.

Any ideas? Do I have a lemon? Should I return the phone to the vendor and have them send me another phone?

HELP ! ! !