Bria Mobile for IOS

1- Settings->Accounts-> SIP

2-

Account Name: choose any name

Display as : write 00 and your number(e.g. 0015672580000).

Username: your number (e.g. 15672580000).

Password: Your number password.

Domain: sip.businessnumbers.net

Click Save.

3-

Click Enabled.

4-

5-

Your number now is online ( registered).

and you can receive or send calls.