[6] Idea Cellular was incorporated as Birla Communications in 1995 after GSM licenses were won in Gujarat and Maharashtra circles.

The company name was changed to Idea Cellular and the brand Idea was introduced in 2002 after a series of name changes following mergers and joint ventures with Grasim Industries, AT&T Corporation and Tata Group.

[16] After the launch of MNP in India, Idea further strengthened its customer base because it was the mobile network with most net port-ins.

[18] Note: The above table contains Vodafone Idea radio frequency details because they used to share their networks with each other via ICR (intra-circle roaming agreement) in some circles.

For example, Idea had started giving its customers in Delhi access to 4G services in May 2018 via the Vodafone network.