Ok for like the past few days I have had the following problems with my Cingular 8525: difficulty sending text messages sometimes I get this message "Your text message cannot be sent verify that your service center address is correct in settings and then try sending the message again" and I notice that I get this message and have this problem when the G next to the signal strength bars is replaced by a U. I have also had a problem making phone calls when the U is present so I was wondering does anyone know how I can fix this?