I have been using this data card from last 3 months. I am having plan Rs.899 in which I can download upto 10 GB in 3G speed & there after 2G unlimited. I am not having any issues with airtel 3g wifi data card. its running fine in all my devices as I am using it on my 2 android phones & 1 personal computer.before using this airtel 3g wifi data card I was using Tikona & I had faced a lot of troubles with Tikona as there were no 3G networks in Tikona but airtel is the best. I am very much satisfied with this wifi data card & will refer everyone to use this once.