This docomo is the collaboration of japan company, This network provides an only 2G coverage in tamilnadu, but they not yet launched 3G service in tamilnadu , we will use this sim only for the calls but the tariff of the docomo is somewhat okay but the only reason that makes the network to have an bad impression on it.
Even though they are providing the satellite signal but their data speed is very worst , I have been used this data once , I I hated the internet browsing, after this event , they are providing only 2 G coverage , atleast make such internet atleast as fast as enough , then there was another problem is voice clarity which is having very bad voice clarity in some areas , which is also an one of the reason to hate it!