A wallpaper can look great as a picture and still fail on the lock screen: the large clock sits right on top of the text, or notifications cover the one detail that made it special. Knowing where iOS puts things solves most of that.
What covers which part
From top to bottom, the lock screen roughly looks like this:
- Top edge: the status bar and, on newer models, the Dynamic Island.
- Upper third: the date, the large clock and, if you use them, widgets just below it.
- Middle and lower area: notifications, which stack up from the bottom as they arrive.
- Bottom edge: the flashlight and camera buttons in the corners and the home indicator bar.
Where text and details belong
The calmest spot is the band just below the clock and widgets, roughly between a third and two thirds of the screen height. Text there stays readable when the phone is locked and is only covered once notifications pile up.
A few more rules of thumb:
- Keep the top third quiet. Fine texture or a soft gradient behind the clock works. Text or busy detail does not.
- Mind the corners at the bottom. The two round buttons sit there, so avoid small details in those spots.
- Center horizontally. The clock is centered, so a centered composition looks deliberate.
- Leave contrast for the clock. iOS picks a clock color that suits the picture, but a very busy area behind the clock makes it hard to read in any color.
Depth effect and dimming
If a photo has a clear subject, iOS can place it in front of the clock (the depth effect). That works with photos of people or objects, not with flat graphic designs. And when dark mode is on, iOS can dim the wallpaper slightly. That makes a bright picture less harsh at night, but it does not replace a real dark version.
Light and dark versions
If you want a light design by day and a dark one at night, make two versions with the same layout and switch them with a Shortcuts automation. The iPhone guide shows how.
The iPhone generator places the text of every template in the safe band below the clock automatically. The Notebook template is a good start: a dot grid that stays quiet behind the clock and your line in handwriting where you can read it.