_:n1c75d9a0c75f437bb0a9657644f57a90xb3
<http://schema.org/text>
"BYOD devices don't usually work for domestic roaming on T-Mobile due to the device not being a T-Mobile or US Cellular device in the case of West Virginia. The device showing as an unknown device is normal for any device not sold to you by T-Mobile."
<https://community.t-mobile.com/android-9/unlocked-s21-ultra-showing-as-unknown-device-and-not-supporting-5g-or-extended-range-lte-on-my-mobile-account-35367?postid=137257>