I appreciate the troubleshoot advice reprovisioning to tower. Been there and done that, also ##873283# and reset services, they also had me back the iphone and do a complete new phone reset . I have 4 iphones on this account none of which will receive voice calls in this area. Only when it goes into extended mode which is really roaming can I send or receive voice calls. This is been happening since the new antenna has been up and running LTE data is fine up to 15megabits, also I just got the airwave/ minitower a few days ago. I believe something's wrong with the voice module or maybe coax cable problem on that tower if they would check it out of would rather be an easy fix. Sprint's customer service and tecs are nice enough but I've never had more problems and broken promises from a wireless provider.