FRP Lock (Android)

Samsung Galaxy S7 on the FRP Lock screen

FRP Lock (or Factory Reset Protection) is a built-in security layer by Google on most Android devices that is triggered in the Setup Wizard after resetting your device while someone's Google account was linked to the device and not properly unlinked. This is a similar system to Apple's Activation Lock

Bypasses

Although bypass methods exist, most of them aren't effective and most of them are either spreading scams or malware or are programs disguised as legit ones with Trojans hiding inside.