For railways

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.
Best of all, you don't pay a premium charge for any of this, just the price of a standard SMS.
For more details: https://www.google. co.in/mobile/ default/sms/

Railway Complaint Number

Railway authorities have introduced a system where one can complain from a running train. The SMS about complaint will be acknowledged and attended.

Give the train no, bogie no, precise nature of complaint- no water in bath room/ no lights/fan not working/security problem or what ever thru SMS. checked from Stn Supdt who confirms it is an effective tool.

The Number to SMS is 81212 81212