| City/Town/Village | State/UT/Region | Company | Technology | Customer Care Nos. |
| IBHighway | Madhya Pradesh / Chhattisgarh | Airtel | GSM | 9893012345 |
| Ibrahimpatnam | Andhra Pradesh | HUTCH | GSM | 9885000111 |
| Ibthermal | Orissa | Airtel | GSM | 9864098640 |
| Ichalkarangi | Maharashtra / Goa | Airtel | GSM | 9890012345 |
| Ichalkaranji | Maharashtra / Goa | BPL Cellular | GSM | 9823099800 |
| IDEA Cellular | GSM | 9822012345 | ||
| AirTel | GSM | 9890012345 | ||
| Tata Indicom | CDMA | 9210008282 | ||
| Idar | Tata Indicom | CDMA | 9210008282 | |
| Igatpuri | Maharashtra / Goa | IDEA Cellular | GSM | 9822012345 |
| Airtel | GSM | 9890012345 | ||
| Tata Indicom | CDMA | 9210008282 | ||
| Ilambazar | West Bengal | Airtel | GSM | 9832098320 |
| Illayangudi | Tamil Nadu / Pondicherry | Aircel Ltd. | GSM | 9842212345 |
| Indapur | Maharashtra / Goa | IDEA Cellular | GSM | 9822012345 |
| Indore | Madhya Pradesh / Chhattisgarh | Reliance Telecom | GSM | 9827098270, 9827198271 |
| AirTel | GSM | 9893012345 | ||
| IDEA Cellular | GSM | 9826012345 | ||
| Tata Indicom | CDMA | 9210008282 | ||
| Indore-BhopalHighway | Madhya Pradesh / Chhattisgarh | AirTel | GSM | 9893012345 |
| Indri | Haryana | AirTel | GSM | 9896012345, 9896098960 |
| Inhavna | U.P.(East) | Airtel | GSM | 9849098490 |
| Injambakkam | Tata Indicom | CDMA | 9210008282 | |
| Inkollu | Andhra Pradesh | Airtel | GSM | 9849012345 |
| IOCL | Tata Indicom | CDMA | 9210008282 | |
| IPHighway. | Madhya Pradesh / Chhattisgarh | Airtel | GSM | 9893012345 |
| Irinjalakkuda | Kerala | IDEA Cellular | GSM | 9847012345 |
| AirTel | GSM | 9895012345 | ||
| BPL Cellular | GSM | 9846098460 | ||
| Tata Indicom | CDMA | 9210008282 | ||
| Irugur | Tata Indicom | CDMA | 9210008282 | |
| Islampur | Maharashtra / Goa | IDEA Cellular | GSM | 9822012345 |
| Airtel | GSM | 9890012345 | ||
| BPL Cellular | GSM | 9823099800 | ||
| Islampur | West Bengal | Airtel | GSM | 9832098320 |
| Tata Indicom | CDMA | 9210008282 | ||
| Ismailabad | Haryana | Airtel | GSM | 9896012345, 9896098960 |
| Israna | Haryana | Airtel | GSM | 9896012345, 9896098960 |
| IDEA Cellular | GSM | 9812012345 | ||
| Itahar | West Bengal | Airtel | GSM | 9832098320 |
| Itarasi | Madhya Pradesh / Chhattisgarh | IDEA Cellular | GSM | 9826012345 |
| Reliance Telecom | GSM | 9827098270, 9827198271 | ||
| Airtel | GSM | 9893012345 | ||
| Tata Indicom | CDMA | 9210008282 | ||
| Itchapuram | Andhra Pradesh | Airtel | GSM | 9849012345 |