Apple's iPhone Duo uses traditional Touch ID authentication instead of Face ID, with the sensor built into the side button, iPad-style. By default you have to authenticate with your finger to unlock the device, then swipe up to dismiss the Lock Screen, but there's a setting that removes the latter step. Here's how to enable it.
Use Rest Finger to Open
Assuming that you set up Touch ID when you first configured your iPhone Duo, you can use "Rest Finger to Open" to skip the swipe up after fingerprint authentication. With the screen awake, the setting lets you immediately open your iPhone by resting your finger on the side button – no swipe required.
In the Settings app, the associated toggle appears in two places:
Settings ➝ Touch ID & Passcode.
Settings ➝ Accessibility ➝ Side Button.
If you navigate to the first menu, you'll need to enter your passcode before you can access it.…