Airtel launches 4G nationally with a Television Commercial today. Trial run of 4G was already on with customers given a Free 4G SIM. Yes, you are right. We were given a 4G SIM free which was delivered to our home on request. I have heard of high speed internet in the US and always wondered if it will be a possible in our country too. Airtel 4G promises us the capability to experience lightning speeds and something more for all of us. In my experience, it was quite good only that we got so excited with the speed that we ended up watching about 5 movies in a day.