We check out a lot of phones here at WPCentral, so we frequently switch where our SIM cards go. Many devices nowadays like the Lumia 1520 and Lumia 1020 have SIM card trays that require pins to open. It can be frustrating when we lose them. Good luck asking around for one. Chances are, they aren?t carrying it.
We have one quick tip that will make it hard to lose your SIM card tray pin. Put it in your key ring!
Full story from the WPCentral blog...