One of the most important things I tell you to do when you give away or sell any gadget is to wipe your information. That prevents the next owner, whether they're a criminal or just a snoop, from seeing your sensitive information like bank accounts, contacts, emails, texts, photos, location or getting access to your online accounts.
With Android, wiping your gadget means using the simple Factory Reset option. Unfortunately, it now appears that a reset doesn't do quite as much as you would hope.
The University of Cambridge has wrapped up a first-of-its-kind study that looks at how much information is left on Android gadgets after a factory reset. It found that a hacker could recover Google account information, Wi-Fi credentials, browsing history, email, texts, photos, third-party app information and much more.
Because of Android's popularity, researchers estimate that 500 million gadgets are affected, and that number could grow to 630 million. That could include ones you've gotten rid of in the past, or are about to sell or give away.