| Zone-wise Number of Complaints Received by BSNL and MTNL from Mobile Subscribers in India (2008-2009 to 2011-2012-upto 29.02.2012) | ||||
| Zones | 2008-09 | 2009-10 | 2010-11 | 2011-12 (Upto 29.02.2012) |
| BSNL | ||||
| North Zone {Jammu and Kashmir, Punjab, Haryana, Himachal Pradesh, Rajasthan, Uttarakhand, Uttar Pradesh (East), Uttar Pradesh (West)} | ||||
| South Zone (Kerala, Karnataka, Andhra Pradesh, Tamil Nadu) | ||||
| East Zone (Odisha, West Bengal, Kolkata, Bihar, Jharkhand, NE-I, NE-II, Assam, Andaman and Nicobar Islands) | ||||
| West Zone (Maharashtra, Madhya Pradesh, Chhattisgarh, Gujarat) | ||||
| MTNL | ||||
| Delhi | ||||
| Mumbai | ||||
