Mobiles similarly changed, with the digits 9T replacing the prefix 093T, where T is a digit specific to a mobile operator, that can be 1 (Telecel, now Vodafone Portugal), 0, 2 or 6 (TMN/MEO) or 3 (Optimus/NOS): .
xxx xxxx (before 1999 for Portuguese subscribers using the same mobile operator) 093T xxx xxxx (before 1999 within Portugal) +351 93T xxx xxxx (before 1999 outside Portugal) 9T xxx xxxx (after 1999 within Portugal) +351 9T xxx xxxx (after 1999 outside Portugal) .