iPhone 6 can't send SMS (iOS 8.1)
OK, so here are the details.
I have had this iPhone 6 for a couple of days, and I noticed that most of the time I am unable to send SMS, to anyone.
In Messages, iMessage is disabled and the option to send as SMS is enabled. I haven't even logged in with my Apple ID during setup or after, so there should be no conflicts with my account info. Cellular signal is good also, at least three bars.
Right after restarting the phone, it works, but give it a couple of minutes and it just stops working. I'm noticing that I can't even connect to the Internet, even though it shows 4G in the status bar, and cellular data is enabled with plenty of traffic to spare (a couple of gigs).
I just phoned my carrier and they say there's nothing wrong with my SIM on their end.
If I do something that triggers a connection of some sort, like looking at the call forwarding status, everything springs back to life magically, for a few minutes.
Nothing of this makes sense to me. Could it be a faulty phone, could it be a faulty SIM?
iPhone 6, iOS 8.1