Airtel Customers can now enjoy Hike messenger free for a period of 90 days. To find if you are eligible or not all you need is to visit this link from your mobile. If you are lucky you can see a message like this after clicking the above link Else you can see Other Details about this offer 1. This offer is for prepaid only. 2. Free data of 15mb/month. 3. Duration of month is the same as calendar month.