After the initial launch hiccups, I have not faced any problems with Tata DoCoMo. The call quality is excellent and I haven't faced call drops.
I have received comments in my blog from readers whose complaints range from delayed activation to call drops to SMSs not being delivered.
There is also some confusion about free SMSs. A reader from Karnataka says there are free SMSs in the prepaid pack, the Web site says nothing about it.
It's better Tata DoCoMo clarifies.