Train PNR Status on Mobile

Indian Railway in collaboration with Google is now
providing a 10 digit
mobile number. Just SMS your PNR number to this mobile
number and
instantaneously you will get your ticket's current
status along with all
other journey related details.
The number is 9773300000. No need to prefix 0 or +91.

Best of all, you don't pay a premium charge for any of
this, just the
price of a standard SMS.

For more details:

http://www.google.co.in/mobile/default/sms/#