Mts data I use when im 2012 then I face problem thar is its richarge plan. Every time you get a high price richarge for your data plan. Plan is also very bed because in 450 rs you get only 4 gb net or free fb in that plan you can see video only photo can see.
Mts data card now available in postpaid also but again problem of a big amount that you pay for your plan and speed is also low if you used this in out of city.
A big problem that I faced that is network coverage. Network will be only placed when you stay in city out of city you can get enough network to do your work. And again problem is that if you pay high then why I can use my data in village or out of city.