Can you really unlock an iPhone without passcode?
No, there is no default passcode on the iPhone. It is setup by the user. If you are using Two-factor authentication however it will want a six-digit code. iOS 9 also defaults to a six-digit passcode.Feb 4, 2016
How do I unlock my iPhone 7 if I forgot my password?
On iPhone X and later, or iPad with Face ID, go to Settings > Face ID & Passcode. On earlier iPhone models, go to Touch ID & Passcode. On devices without Touch ID, go to Settings > Passcode.Feb 1, 2022