In India, mobile numbers (including pagers) on GSM, WCDMA, LTE and NR networks start with either 9, 8, 7 or 1. Each telecom circle is allowed to have multiple private operators; previously it was two private + BSNL/MTNL, subsequently it changed to three private + BSNL/MTNL in GSM; however currently each telecom circle has all four operators including Reliance Jio, Bharti Airtel, Vodafone idea ltd and BSNL/MTNL.
All mobile phone numbers are 10 digits long. The way to split the numbers is defined in the National Numbering Plan as XXXXX-NNNNN. Here, XXXXX identifies the network operator and the telecom circle while NNNNN identifies the subscriber.[1]