I've had this set up forever. My 10 digit cell number. Worked fine. I'm out of town right now, and was told my neighborhood lost power. I called my home number on my cell and got "to complete calls beyond your local area..." WTF? So I figure maybe voipo changed something with the forwarding so as to now need 11 digits. Unfortunately, when I tried changing the failover number from NNNNNNNNNN to 1NNNNNNNNNN, but when I click on submit, the number disappears from the field (with no error message.)