They claim that their 4G mobile Hotspot is the fastest 4G Hotspot in India but this is not accurate. They are just some bunch of people who are manipulating things to selling services and to make profit. Internet connectivity and WiFi strength of this device is so worst that even the high end phones struggle in getting things done. My Samsung S7 Edge is struggling to get things done with Airtel 4G Hotspot connected. The battery drainage of this device is very bad, they claim that will last for 6 to 7 hrs but the battery will die within 3 hrs of normal useage. There are other options which are either free or very cost effective in operation and also wallet friendly.
I strongly recommend people not to use airtel 4G hotspot, in case look for other options in the market which are not only cheaper but also very efficient in providing service to their customers.