Xiaomi Redmi Note 4G smartphone registrations are now open on Airtel's website. Subscribers can book the device on airtel.in/mi by entering their details and mention the preffered Airtel store in their cities from where they wish to pick the device. The sale will commence on friday.

The Redmi Note 4G will cost Rs. 9999 and will be available from 133 Airtel stores across six cities - Bengaluru, Hyderabad, Chennai, Mumbai, Delhi-NCR, and Kolkata.

Airtel will also keep a Mi Day each week where the handset can be purchased directly from select Airtel stores without any registration.

There are a few terms and condition to but the Xiaomi Redmi Note 4G from Airtel. Prepaid Airtel and non-Airtel customers must first opt for Airtel's pospaind myPlan for buying the Redimi Note 4G. Also Airtel subscribers must have activated a 3G data pack of minimum 500MB. More details on terms and condition can be found in the FAQs section on Airtel's site.

You will also need to swap your existing SIM to a 4G SIM and then 4G services will roll out. You can enjoy high speed 4G data at existing 3G data pack.

Airtel is offering 10GB of free 4G data to Airtel postpaid users in Bengaluru, where Airtel 4G network is already available. You will have to log in to Company's Airtel website via your Redmi Note 4G.