Indian Railway in collaboration with Google is now providing a 10 digit mobile number. Just SMS your PNR number on 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. (Save this number in your cell. ) Note: While sending PNR, No need to give any symbols. Just send the 10 digit PNR Number blankly. Best of all, you don't pay a premium charge for any of this, just the price of a standard SMS. Source : http://www.citehr.com/136708-train-pnr-status-mobile-thru-google-useful.html
Thanks Sameer. Nice Info. Google's SMS Services. http://www.google.co.in/intl/en_in/mobile/default/sms.html