burned sim card

[shreifali]

Hi all
In lebanon , there are two providers of GSM : Cellis and LibanCell
and the most used cards are the prepaid cards .
these cards are rechargeable by units every month .
if a card is not recharged on time , it will be burned . in other words , it will not be valid.
I want to know how this card becomes invalid , and whatis the way to hack these cards if exists and the way of cloning them
and finally thx a lot

[ekonomi]

Hi,

All sim cards have an id (well, many ids but that's not the topic). The cellphone company that gives you the sim knows that id and based on that they can identify whenever you are placing a call so that they can charge your account. When your card goes invalid I suppose that they delete the sim's id from their database. So whenever you are trying to connect to the network your card is being rejected because it's not in the database (At least that's whats going on in my country about prepaid cards).

Explain a bit about "whatis the way to hack these cards" cause i don't understand what do you want to hack.

Last about cloning, of course you can as long as they use comp128 v1 algorithm. If you don't know what comp128 is try searching old threads of the forum and of course google.com has all the answers ;-)

[shreifali]

hi and thx a lot for replying me.
I mean by hacking if there is a way to make free calls , or hack the gsm network computers and update their databases.

another question plz:
I used a sim reader and a sim editor to read and edit a sim card.
I enetred the pin more than one time , finally the software gives me a warning : CHV security and No attempts left
So what does it mean plz , and what I have to do to edit the card again.
thx in advance