When you cut your SIM card into pieces, your data can’t be recovered by anyone else.
There’s no right or wrong to cut up or smash your SIM card. What matters most is that your card is destroyed, and no one can get their hands on the data. [5] X Research source
Double-check your shredder’s user guide to be sure it can handle SIM cards. If you work at an office, see if your company has an office disintegrator. This is a big, expensive machine that can professionally destroy a lot of important data, like CDs, DVDs, microfilm, SIM cards, and more.
Always keep your eyes and mouth covered when working with heavy-duty power tools.
You’ll need a special memory card USB adapter for this to work. You can find this online, or at most electronics stores. This software works with all types of Android SIM cards.
Windows Phones don’t encrypt your old information, which is why you need to wipe your phone twice. Factory resetting is permanent, and can’t be undone. Keep this in mind before you completely wipe your phone!
You can also reset your phone with a SIM card reading program. You can find these online, or in your phone’s app store.