Forum Discussion
Unlocked s21 Ultra showing as "Unknown Device" and not supporting 5G or Extended Range LTE on My Mobile account
I just bought an unlocked S21 Ultra directly from Samsung. It works great, including the tmobile voicemail app and RCS through the Google messages app. It says I'm connected to 5G on the phone, and...
fireguy_6364 wrote:if its a TMO variant then it should already be in their system..it was branded for them after all..which if memory serves if you purchased it from another vendor it must be on their network for a certain amount of days before it can be unlocked by TMO. 40 days i believe for Post paid and a year for Pre paid or something along those lines.
It should be in their system , but it isn't in their system hence the post. Similar to when I purchased a T-Mobile device from Samsung directly.
