mozilla-b2g/gaia — pull request #6627 by gtorodelvalle (2012-11-26 12:16:55+00:00)
Title: Bug 813679 - *2 and *8 are phone numbers(in Venezuela) the dialer treat them as MMI/USSD (r=fcampo).

The latest news by @ferjm is that USSD/MMI codes are 'phone numbers' ending in #, everything else is a phone number and should be dialed (based, of course, on the airplane mode and SIM card status).