Have you ever had a run of cancellations, and found yourself with several SIM cards showing a status of SOS in your inventory? An SOS sim card in your stock can result from any number of things: cancellations, accounts was not renewed, or simple error. Having several sim cards in your stock that are for all intents and purposes useless to anyone is a pain in the...well, you know. Perhaps you thought those sim cards were in fact of no use? Wrong. They can be revived, and sold or assigned anew. Here's what you need to know: