NOS Comunicações
- Rank in Country: 03
- Operator: NOS Comunicações
- Type: National
- Technology: GSM 900 / UMTS 2100 / LTE 800 / LTE 1800 / LTE 2600
- Ownership: NOS
- MCC:268
- MNC: 03
- Status: Operational
- Description: formerly Optimus (2014)
| Name | NOS |
|---|---|
| Company | NOS Comunicacoes |
| Country |  Portugal |
| Country ISO | PT |
| Country code | + 351 |
| Carrier website | https://www.nos.pt/ |
| Carrier codes |
|
| Mobile prefix | 93 |
| Size of NSN | 9 |
| Number format | +351 93x xxx xxx |
| Coverage map | Check NOS Coverage |
| Comment | Former Optimus. |
| Subscribers | 4 259 000 (Q3 2017) |
| GSM bands |
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| GSM protocols |
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| UMTS bands |
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| UMTS protocols |
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| LTE bands |
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| LTE protocols |
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