Sim Card Spy - Are Text Messages Ever Deleted From Your Phone? You'll Be Surprised!

It's very easy to underestimate technology sometimes. But the reality is, just because we think something is secure doesn't mean that's necessarily the case. For example, just because you delete a text message from your phone doesn't mean it's gone forever.

In fact, most technology, as you'll read below, doesn't delete any information at all - it just deletes the references to it.

This means you have to be extra careful to make sure that you are smart about the text messages you send. Once someone gets a hold on your phone, they could find out all the information you don't want them to know.

Like any electronic storage medium, a SIM card doesn’t delete data but just the reference to that data. The actual file remains on the card until it is overwritten by new data. The SIM Card Spy is simply a recovery device, similar to those used for PC disc rescue

SIM Card Spy Recovers Deleted Messages | Gadget Lab | Wired.com