Airel is one of the famous Indian mobile operator. I am first heard mobile operator is airtel. in 2003 I am studying 9th class my dad buy a new nokia with airtel connection in that time airtel sim cost 999 rs with no balance and life time validity but these sim price is down up to 1 rupee it’s really change in 12 years.
Airtel is really soo best compared to other mobile operators in India. because of main signals. In my grandmother village only airtel sims working. These networks have some call drop issues in some area but others it’s very good.