I use Tata Indicom Walky to connect to internet at home. The speed is not so great, and I need to reconnect after 10-15 minutes because after that much time the speed reduces drastically. Sometimes it disconnects by itself. But it is OK for casual browsing. One of my friends is using Tata Indicom USB Modem Plug2Surf and it works at decent speeds, nothing extraordinary, though better than my Walky connection. But it does provide a portable solution.