| City/Town/Village | State/UT/Region | Company | Technology | Customer Care Nos. |
| Uchana | Haryana | Airtel | GSM | 9896012345, 9896098960 |
| Udaipur | Rajasthan | Hutch | GSM | 9828098280 |
| Airtel | GSM | 9829012345 | ||
| Tata Indicom | CDMA | 9210008282 | ||
| Udgir | Maharashtra / Goa | BPL Cellular | GSM | 9823099800 |
| IDEA Cellular | GSM | 9822012345 | ||
| Airtel | GSM | 9890012345 | ||
| Udumalpet | Tamil Nadu / Pondicherry | Aircel Ltd. | GSM | 9842212345 |
| BPL Cellular | GSM | 9843098430 | ||
| Tata Indicom | CDMA | 9210008282 | ||
| Udupi | Karnataka | Airtel | GSM | 9845012345 |
| Tata Indicom | CDMA | 9210008282 | ||
| Udvada | Gujarat | IDEA Cellular | GSM | 9824012345 |
| Ugarkhud | Karnataka | Airtel | GSM | 9845012345 |
| Uggi | Punjab | Airtel | GSM | 9815012345 |
| Ujjain | Madhya Pradesh / Chhattisgarh | Reliance Telecom | GSM | 9827098270, 9827198271 |
| AirTel | GSM | 9893012345 | ||
| IDEA Cellular | GSM | 9826012345 | ||
| Uklana | Haryana | Airtel | GSM | 9896012345, 9896098960 |
| Ulavapadu | Andhra Pradesh | HUTCH | GSM | 9885000111 |
| Ulhasnagar | Maharashtra / Goa | BPL Cellular | GSM | 9823099800 |
| IDEA Cellular | GSM | 9822012345 | ||
| Airtel | GSM | 9890012345 | ||
| Tata Indicom | CDMA | 9210008282 | ||
| Ulindakonda | Andhra Pradesh | Airtel | GSM | 9849012345 |
| Ullal | Karnataka | Airtel | GSM | 9845012345 |
| Ulundurpet | Tamil Nadu / Pondicherry | Aircel Ltd. | GSM | 9842212345 |
| BPL Cellular | GSM | 9843098430 | ||
| Umarga | Maharashtra / Goa | Airtel | GSM | 9890012345 |
| Umargam | Gujarat | AirTel | GSM | 9898012345 |
| Umargaon | Tata Indicom | CDMA | 9210008282 | |
| Umergaon | Gujarat | IDEA Cellular | GSM | 9824012345 |
| Umrej | hw | Tata Indicom | CDMA | 9210008282 |
| Umreth | Gujarat | Airtel | GSM | 9898012345 |
| Tata Indicom | CDMA | 9210008282 | ||
| Umsning | North East | Airtel | GSM | 9862012345 |
| Una | Gujarat | IDEA Cellular | GSM | 9824012345 |
| Airtel | GSM | 9898012345 | ||
| Una | Himachal Pradesh | AirTel | GSM | 9816012345, 9816098160 |
| Undi | Andhra Pradesh | Airtel | GSM | 9849012345 |
| Undrajavaram | Andhra Pradesh | Airtel | GSM | 9849012345 |
| Ungutur | Andhra Pradesh | IDEA Cellular | GSM | 9848012345 |
| Unjha | Gujarat | IDEA Cellular | GSM | 9824012345 |
| Tata Indicom | CDMA | 9210008282 | ||
| Unnao | Tata Indicom | CDMA | 9210008282 | |
| Unthala | Haryana | Airtel | GSM | 9896012345, 9896098960 |
| Upleta | Tata Indicom | CDMA | 9210008282 | |
| Uppla | Kerala | AirTel | GSM | 9895012345 |
| Upunda | Tata Indicom | CDMA | 9210008282 | |
| Urapakkam | Tata Indicom | CDMA | 9210008282 | |
| Uravakonda | Andhra Pradesh | Airtel | GSM | 9849012345 |
| Urjanagar | Tata Indicom | CDMA | 9210008282 | |
| Urlikanchan | Maharashtra / Goa | Airtel | GSM | 9890012345 |
| Tata Indicom | CDMA | 9210008282 | ||
| Urmur(FromTanda) | Punjab | AirTel | GSM | 9815012345, 9815098150 |
| Usgaon | Maharashtra / Goa | Airtel | GSM | 9890012345 |
| Usilampatti | Tata Indicom | CDMA | 9210008282 | |
| Uttamapalayam | Tamil Nadu / Pondicherry | Aircel Ltd. | GSM | 9842212345 |
| Uttarsanda | Gujarat | Airtel | GSM | 9898012345 |