Bharti Airtel is planning to expand its mobile phone towers in Delhi by more than 25 per cent by the end of March 2009.

Bharti Airtel is planning to expand its mobile phone towers in Delhi by more than 25 per cent by the end of March 2009. Meanwhile, after Vodafone Essar, Bharti Airtel has tied up with Apple to launch iPhone in India. The phone is expected to be available on Airtel and Vodafone networks by October 2008.