Glad to have you Jill. I have the WiFi version as well, but from phone experience, I would suggest comparing your Nexus 7's mobile access to another device, like a smart phone at the same location and testing the Nexus 7 at various locations, noting the single strength, just for a start. Also you may want to have your mobile service provider, check the tablet at their location. Possibly, some members who have a Nexus 7 with mobile service will have some better suggestions.

Sent from my Nexus 7 using Tapatalk 4

Thank you for your reply S. Prime - I have other devices and the coverage on them is OK.  I can get onto Facebook with the Nexus 7 but it only loads some of the feeds and is very slow.  I have even done a clean and a defrag but that didn't help either.  I might have to check with my provider and see what they suggest.  Will let you know if I have some success.  Thanks again.