Perhaps this is a ridiculous question, and I asked before in a different forum but got no response.

Is it possible to clone a SIM card? Sometimes when I go some places I don't want to bring my Pearl, and so I bring my older phone, but it's a pain to switch SIM cards all the time, and then when I get back all my emails push through, an so on. Is is possible?

It's possible but you need the sim card cloner....seems like they are available on the internet. Legal or not.....another story.

You can only clone the data stored on the SIM such as contacts, SMS, FDN, etc. The SIM also has a 19-digit unique ID which cannot be changed because it's burned into the card much like an IMEI is unique to a phone. The network uses this ID to identify you on the network so it knows where to route the calls. If you were to clone your SIM, the target SIM would have its own unique ID which you could not change.