hello all. i've had the Revolution since July 1st, and recently it's been popping up with this message whenever i try to send a text, or make a phone call. the only way i've found to temporarily fix this is to reboot it. to elaborate more, during this time of being unrecognized, any texts sent to me is not actually received until i reboot. and any incoming calls ring once on both ends and then stop. the caller will hear one ring, then the voicemail message, whereas i will just hear the one ring. has anyone experienced this?