Does this sim unlock also work for phones that are currently registered on Sprints network? Like the account is still active? I've got a Sprint HTC one I've performed the Sim Unlock attempting to use my T-Mobile sim, but it says "Emergency Calls Only," and "Searching for network/No Service" I've got a red X where the signal bars are. Of course No text, no voice and no data. I've gone into the *#*#4636#*#* service menu and changed the settings to WCDMA, but NO dice. Yes, I went to mobile settings, searched for service and nothing appears, just a blank screen! The phone does recognize my Sim card and even shows my cell number and IMEI, UICC as well. I've even attempted to change RUIM settings in DFSCDMA Tool but that does very little. I have changed the radio around about 5 different times, currently using 3.04.651.2 with NO fix. I have searched high and low on these forums and haven't found anyone that can help me.