The MTNL, Dolphin, Delhi Subject: SIM CARD registration failed on Mobile No. 9868526213 Sir/Madam, I am a regular post-paid connection user of MTNL (DOLPHIN), DELHI since 3 to 4 years. My Mobile No. is 9868526213 in the name of Bishan Datt Vats, R/o 615, Village Mundka, Delhi – 110 041. The SIM is showing “SIM Card registration failed” from 27/01/2009 and when I go to Janak Puri Sanchar Haat for the same problem, the officer said “The SIM card is corrupted” and advice to change the SIM... read full review »