Add a persistent message to iPhone main lock screen

Solution 1:

Turns out that the easiest way is to actually use the native Reminders.

• Write a reminder
• Set it to notify you 5 minutes from when you create it
• Enjoy a permanent message on the lock screen until you mark it done

Create as many reminders/notes/messages as you want.

Solution 2:

If you want it permanent and not just a notification, you could use Photoshop (or similar program) or the built in iPhone photo editor to create a custom lock-screen background that includes the note. Depending on your frequency of changing the note and preference for it looking good anything from a imitation notification to a hand scribbled note could be achieved.

Solution 3:

You could try Apple Configurator, available for free on the Mac App Store. Once you’ve downloaded the app, you can set up a configuration that includes a persistent message. Be warned that this forces you to wipe your device, and that restoring from a backup will (as one may expect) wipe the configuration. It installs on the device as a profile.