CODE To Know The TATA DOCOMO SIM Activation Date :
- Dial *121*12# OR *121*1# (Both CODE is working and it is free of cost)
- Then CLICK on the CALL button
- After few seconds, You will get a reply message in your INBOX
- Your SIM Card activation Date will be mentioned on that SMS also you can get the Total Days spent on Tata Docomo network from the date of activation.
The Reply Msg From DOCOMO will be like this
[ Dear Customer, your number was activated on 14/07/2014 and your cumulative days on network as of today are 63 Days]