I am using airtel 3G data card since 1 year, I bought it for 1499, and it has functions like messaging, contacts, external memory slot. The installation process is very easy it is pulg in device, just insert in PC or laptop In USB device and the Autorun process will be started and the software will be installed. The data card is good and the airtel sim is not working in our locality.
The speed of 3G is not even like 2G of other networks. The net will be connected but the data will be not downloaded from the server to the computer and then we should eject the data card and re insert it. then it works with maximum speed of 20Kbps . the speed of the net will be fast after 12PM in the night. The memory card can be inserted in slot to use the data in the memory card such as music, files, etc which works as a card reader. It is working with other sim cards also.
The data card has following disadvantages
1.it does not show the call alert, at least a beep can be used to indicate the call. If have only missed call alerts then we will come to know who had called us.
- the data card be unblocked using a software update and we can use any sim card.
The speed of the other networks is very good when compared with airtel in the same data card in same area. We can use the data card but not with the same network provider.