Activate sim at Www.BdPhone.com 

or 

Activate sim at https://www.att.com/prepaid-activate/

Bdphone esim Card Powered by FastNet Mobile and AT&T. Phone must be unlocked or AT&T compatible. After you receive the sim, you will activate it at your convenience. SIM only- fund not included. You have to add funds during activation. www.BdPhone.com to view plans. . . BdPhone Mobile Plans  https://bdphone.com/bdphone-fastnet-plan/