no it wont
coz verizon uses CDMA and Tmobile GSM
so they are not compatible
My friend has a Treo 650 and he said he is selling it for $200. But he has Verizon and the phone is verizon and I have T-mobile, I wanted to know if i could unlock it and make it work with T-mobile and how much do carriers charge to unlock the phones for you or just a estimate what it will cost..