SIM failed to register network

[Joker_hk]

when a sim card gives this type of error when trying to log to network, what does it mean??...

does it mean the ki or imsi as been changed on the sim from the network to an invalid one...
Or is it just the network that deleted this from it's database and no longer recognizes the sim???

thanx in advance

[nonu_don]

according to me, your second thought is correct. that is, the imsi and ki from the network database have been deleted or have been changed (cause imsi and ki can only be changed at the network provider end and not in the sim card end),, [utill and unless u r not using silvercard, or simcard 8]

[nase ck]

could u tell me.. how do u enter the KI? maybe u enter KI in small letter. try capital letter...tq