I cannot make or receive calls or send/receive texts while using our 4G Extender. If i connect our old 3G Network Extender, i have no issues at all. All other members of my home cannot connect with 3G but have great service with the 4G Extender. I have no issues making or receiving calls or texts while i'm out and about, only at home with the 4G extender. i have tried to connect while being 12 inches from extender.