Very bad speed, customer care (promise to solve problem in 24 hrs but they will not resolve the problem till the time you will not throw away your device). Promise to give around 3.1 MBPS while they will never tell before purchasing the avg speed is 256 to 612(approx) speed. Even I never get the avg speed it always 50-60 kbps.
Tata is always pathetic I will think about 100 times before going for any of its products!!