APN settings for my OnePlus One
Now, when I spoke w/ ATT on the phone they said the device may not work at LTE speeds. From what I'm reading online, this is because the SIM I'm using has never been registered on a LTE network.
Users of other unlocked phones have mentioned this is an issue and have suggested the following:
Put the micro SIM in a compatible LTE phone and turn it on. The SIM should register on the network. Put the SIM back in the unlocked phone and you should be good to go.
To test that I'll have to find a compatible phone, but so far changing the APN settings hasn't worked.
Any thoughts from ATT or otherwise?