Earlier I used MTS Vodafone but it was my biggest mistake. I felt that I was cheated in terms of speed & connection. But then i bought tata phonton dongle. Believe me, it worth spending for dongle, they are truly honest & they also send me.
My data balance left for use. Vodafone mts was horrible for me & my friends too. So its my advice that go for tata -phonton & forget worries.
Sunny
Delhi