Cell number shows unknown

Hi @Skynight,

Thank you for reaching out. We'd love to take a closer look into this for you.

To better assist, we want to know:

• what exactly you mean by your number showing as unknown
• are you activating a new line or installing a new SIM for an old number
• are you using an AT&T branded or unlocked device
• what AT&T wireless plan (prepaid/postpaid) do you have 

You can also follow the instructions in the link to activate your line.

Try this and please reach back so we can assist further.

Doyin, AT&T Community Specialist.