I upgraded to LTE from 3G last week. It worked for a few days and was faster for navigation and traffic remapping. But now it will not connect to LTE, 3G, or Edge. It shows four or five bars of signal but no LTE, 3G or Edge connection. I have tried the steering wheel buttons reset, but that doesn't work. I talked to the service center and was told other people who have upgraded are having the same problem and I will have to wait until software 7.0 comes out in a few weeks. Really??? Why would they upgrade me to lose all mobile connectivity for weeks? Anyone else having this problem?