I bought T24 sim card a year ago from big bazar and my experience with T24 Mobile Operator is pathetic. The network coverage is very bad, You not see a single network bar while travelling in train or bus. Internet speed is very slow and while calling voice keep fluctuating from high to low because of network problems.
And they don’t provide good offers as well. I used this sim for about a year but never received good offers, calls rates were very high always.