I got my 6S delivered late last night and set it up later and didn't have much time to use it till today. Today I noticed that it will drop the LTE connection and then after a long wait, will go to no service. It's done it at least five times today. Airplane mode won't bring it back, I have to reboot the phone or wait a long while. I've tried reseating the sim card a few times with no luck. I've already made an appointment at Apple for Sunday afternoon in case this keeps happening and I know that after Christmas, it will be a few days before I could even hope to get on. I got this one from T-Mobile but I'm just going to deal with Apple instead. I have a 6S+ and a 6+ and Note Edge all on T-Mobile with no problems. Anyone have any other ideas I could try? Thanks!