My LTE won't work on iphone 5?

To the right of where it sais AT&T it's empty and I've reset my network settings, taken out the SIM card switch on and off airplane mode and power off my phone. I quit

Sounds like AT&T doesn't have LTE coverage in your area yet, most of the nation doesn't have LTE coverage yet.

You don't give enough detail to make anything other than guesses.

So here goes…

1. You are outside a 4G coverage area: it's still an immature service and coverage is very patchy.

2. Although the phone is potentially 4G capable, it depends upon you paying for a 4G service and upon the phone having the necessary 4G LTE software update from Apple. If you have a regular 3G SIM you only get 3G and if the phone has not had the update it doesn't matter which SIM is fitted as it will only get 3G at most.

Ask better questions, get better answers.

I signed up for LTE for my wife and myself. She gets it all the time and I never have had it even once. I don't get it when I'm home and she's not though. Any thoughts on that?