Under the partnership, the Karbonn A40 Indian is now effectively priced at just Rs 1399. Earlier the phone's market price was Rs 3499). The phone has a full 4-inch touch screen along with dual SIM slots. The Airtel phone offers access to all apps on Google Play Store, including YouTube, Facebook and WhatsApp. Meanwhile, Jio Phone (effectively priced at Rs 0) does not support Android/iOS applications. The Reliance Jio Phone comes with the company's own mobile applications.