Tata Docomo comes with a new service for its users. Now all Tata Docomo users can share their balance with each other. It not a trick, infact its a service from Tata Docomo for its users to transfer balance from one Tata Docomo SIM to other. So its a genuine method and there is nothing to bypass.
Also Read: Balance Transfer Trick For Airtel

Following is the method to transfer balance in Tata Docomo:
How to Transfer Balance in Tata Docomo:

• First Go to Messages menu and create a new message.
• Type BT<space>Mobile Number to which you wanna give talktime<amount you want to send.
• Now send this message to 54321.
• For example :
  BT 90XXXXXXXX 10
• If your friend want to refund the amount transferred by you then he/she can write the following message:
  RBT<space>Transaction ID and send it to 54321