00351 and +351 are used interchangeably to dial Portuguese phone numbers from a mobile (more on the plus sign).
| Phone type | Dialing format | Or using + |
|---|---|---|
| Cell phone | 00 351 9xx xxx xxx | +351 9xx xxx xxx |
| Landlines | Dialing format | Or using + |
|---|---|---|
| Amadora | 00 351 21x xxx xxx | +351 21x xxx xxx |
| Braga | 00 351 253 xxx xxx | +351 253 xxx xxx |
| Coimbra | 00 351 239 xxx xxx | +351 239 xxx xxx |
| Evora | 00 351 266 xxx xxx | +351 266 xxx xxx |
| Faro | 00 351 289 xxx xxx | +351 289 xxx xxx |
| Madeira | 00 351 291 xxx xxx | +351 291 xxx xxx |
| Lisbon | 00 351 21x xxx xxx | +351 21x xxx xxx |
| Ponta Delgada | 00 351 296 xxx xxx | +351 296 xxx xxx |
| Porto | 00 351 22x xxx xxx | +351 22x xxx xxx |
| Setubal | 00 351 265 xxx xxx | +351 265 xxx xxx |