If you do find yourself in possession of a jailbroken device, and you happen to love the simplicity of the new iOS 11 Lock screen Passcode interface, then you can follow the relatively simple steps below to get up and running. To make it as easy as possible, the process simply involves the installation of one tweak from Cydia and then manipulating a number of settings to set the effect up.
Step 1: On your jailbroken device, launch Cydia just like you probably do ten times a day. Wait for all packages to refresh and head into the Search functionality.
Step 2: Search for the Faces Pro tweak. When it comes back in the search results tap on it and go through the installation process as you usually would.
Step 3: There’s a little bit of work involved on your part here. Download the image from imgur.com/a/eG5Nt and make sure that it is set as the background image of all of the Passcode buttons using the Faces Pro tweak.
Step 4: Now, still within the options for the Faces Pro tweak, you will need to manually adjust the transparency settings to suit your own personal tastes. Nobody outside of Apple will actually know the true transparency settings baked into iOS 11 for the new Lock screen, so it’s a case of experimenting until you are happy with the visuals.