A lock screen is more than the place where notifications appear. It is the first control point for the phone. The FTC recommends setting a phone to lock when it is not being used and using at least a six-digit passcode FTC. If your phone supports biometric unlock, you can usually combine convenience with a passcode that is harder to guess. The small trick many people miss is the automatic-lock timer. A phone that waits a long time before locking can remain open after it is set down. Shortening that timer makes the lock screen do its job without requiring you to remember anything.
Also look at what is visible while the phone is locked. Many phones let you decide whether message previews, wallet cards, smart-home controls, quick replies, or notification details appear before unlock. A private setup does not have to hide everything, but it should avoid showing sensitive one-time codes, account alerts, or personal messages to anyone near the phone. If you often place your device on a table, the related article Should You Place Your Phone Screen Up or Down? explains another small habit that changes what others can see.
Turn Updates, Backups, and Lost-Phone Tools Into Set-and-Forget Features
