Airtel 4G Hotspot is one of the ruthless hotspot which I have ever preferred in my lifetime.One of the major drawback of Airtel 4G Hotspot is that limits your connection to maximum of 10 peoples which according to me is very less.Battery backup of Airtel 4G Hotspot is not much impressive, Even though it has a 1500mah battery and according to the company it should last around 6 hours, but from my personal experience I Feel that the backup is much less than stated by them maybe around 3 to 4 hours.Some of the limitations of Airtel 4G Hotspot are as follows.
1) .Airtel 4g Hotspot only supports postpaid sim cards.It does not allows you to use it with prepaid sim cards and sometimes it can be bit heavy on your pocket.
2) .Pass key of Airtel 4G Hotspot is constant and fixed and therefore it cannot be changed further which can cause inconvenience for its user.If he wish to change the pass key he will not be allowed to do so which can cause disruptions to his services.
3) .It does not supports 2g signals which means you would not be able to use it in a area with only 2g network.
4) .Airtel 4g Hotspot is highly expensive. It costs around Rs5000.Not every individual can afford to buy this.
5) .Airtel 4g Hotspot gets heated up very quickly.After an use of almost 1 hour it starts getting heated, which causes inconvenience to its user.
FROM MY PERSONAL EXPERIENCE I STRICTLY RECOMMEND NOT TO PREFER "Airtel 4G Hotspot."