In India, mobile numbers (including pagers) on GSM, WCDMA, LTE and NR networks start with either 9, 8, 7 or 6.
[2] A telecom circle is normally the entire state, with a few exceptions like Mumbai and Kolkata (which are different zones than their respective states), Goa (which is a part of the Maharashtra zone), Chhattisgarh (which is part of Madhya Pradesh), Sikkim (which is part of West Bengal) Jharkhand (which is a part of the Bihar zone), Northeastern states except Assam and Sikkim (which are part of Northeast zone) or Uttar Pradesh (divided into east and west zones).
Delhi is a unique circle because it includes cities from Haryana (Gurgaon and Faridabad) and Uttar Pradesh (Noida and Ghaziabad) as well.
The new state of Telangana remains in the same circle as Andhra Pradesh.
From May 20, 2005, calls between Mumbai Metro and Maharashtra Telecom Circle, between Chennai Metro and Tamil Nadu Telecom Circle, and between Uttar Pradesh (East) and Uttar Pradesh (West) Telecom Circle service areas are merged in Inter service area connected in the above-mentioned four states would be treated as intra-service area call for the purposes of routing as well as Access Deficit Charges (ADC).