Hi guys , I really using this operating system since only 9 months .
Tata docomo operating system has been rated amongst TOP 10 services brand .
I love the operating system , because the wireless network on GSM , CDMA & 3G technology is available in every small & big villeges .
The operating system is present in 60 cities & over 1600 channels.
This is amazing & excellent operating system in the WORLD .