T24 mobile operator is a partner of tata docomo the sim has given by big bazaar .
They will msg the offer to the T24 mobile operator . They will balance to the customer when they shop in big bazaar .
coming to the network coverage
it have good network in rural and urban area no issue in network I have using from 4 year
no issue in network the customer service is also good
the charges aaaaand billing as same as other network will charge no extra charges
T 24 is a good operator