Airtel post paid data get drained out automatically once the dongle switch on.Airtel 4g dongle data starts getting drained out automatically ad soon as I switch it. I lost around 2.5 data with in 2 days with downloading anything.Moreover its falsely claiming 4g . Only 4g is written on the dongle .AlwaysI am getting 3G . My vodafone 3G mobile connection is faster than this. Please stop harassing us .Call center guys are useless as they know nothing.I want to get refund for the device and the amount I had spend for refilling data.