Have you sold your used Android phones in the past when upgrading to a new smartphone? Were you safe, making sure to reset the phones and wipe them of all your personal data first? Bad news, Android users: A new study has revealed that using Google’s reset function in Android doesn’t actually delete your personal data. SEE ALSO: Here’s how to give your Android phone a huge speed boost Computer and mobile security firm Avast recently conducted a study in which it purchased 20 used smartphones online. The devices had been wiped using Android’s in-built reset mechanism, but Avast was still able to recover private photos, contacts, owner identities and more using common tools that any hacker might posses. As is the