A:Answer Dear Customer,
Thank you for contacting Huawei, we will be more than glad to answer this question for you.
According to AT&T's website if you are receiving the 4G network you have the LTE network. With their service the 4G comes with the LTE.
The Mate 9 supports numerous frequency bands, including five 2G bands, 10 3G bands and 20 4G bands. With support for 1334 carriers in 217 countries and regions, you can stay connected when you’re away from home.
If you have any other questions regarding your Huawei Mate 9, please feel free to get in touch with us, we will be more than glad to answer all your questions.
We remain at your service and thank you for contacting Huawei.
BG