My TRACFONE Lg 800G keeps saying emergency call only when I have full service
This problem shouldn't really have anything to do with the signal your getting. the emergency calls only mode is intended for prepaid phones without minutes or contract phones that are deactivated.
That being said, there have been a lot of problems with the 800g sending certain types of data over networks, since your prepaid phone is constantly sending data regaurding your prepaid time, it may just be that the data isn't being sent or recieved properly thus either your phone or the network thinks you are out of time. try taking out your sim card see if you can tell if it is an ATT sim or a T mobile sim, if it's ATT its a pretty good possibility that that is your problem. Either way if your getting the emergency calls only screen and you've got plenty of minuts on your phone I would contact tracfone and tell them what's going on.
and a little FYI: they may try blaming it on your cell number, if you've had the same number for a long time and havent had any problems, dont let them bully you into getting a new number, chances are it wouldn't help anyway