Looks like, Jio is ready to disrupt the mobile market, yet again. And, this time it is the Jio’s cheap feature phone. And, other telcos have already begun preparing to counter the move.

Bharti Airtel, Jio's arch-rival, is preparing to launch its own 4G smartphone just ahead of the festival season of Diwali. According to a report in The Economic Times, the telco is in talks with phone makers Lava and Karbonn.

Reliance Jio has announced India's cheapest feature phone at Rs 0, which will come with support for 4G VoLTE. jio has already begun the trial run and it will be open for pre-booking from August 24. Here’s how you can book it for Rs 0, but do remember you can avail of the offer only on payig a fully refundable deposit of Rs 1500. The device will reach users only by September.

While Jio plans lower price to target users, Airtel is betting on smartphones that offer bigger display and camera, for slightly higher price. While you will have to wait for the Airtel smartphone until Diwali, Jio's feature can be pre-book online here and here's how can book it via an offline store