Bharti Airtel on October 11 announced it was collaborating with Karbonn Mobiles to offer a 4G smartphone – the Karbonn A40 Indian -- at an effective price of Rs 1,399. The collaboration is part of Sunil Mittal-led Bharti Airtel’s ‘Mera pehla 4G smartphone’ initiative, which aims at providing affordable 4G smartphone to people seeking to move from feature phones to smartphones and experience high-speed internet on the go. The Bharti Airtel announcement seems to again have pitten the telecom major against Reliance Jio, which recently launched its 4G feature phone, JioPhone, which is virtually free. Some prospective buyers might be confused