applicationsiosipadiphonescreen-lock
I use my iPhone/iPad screens as digital message board. A bit like digital message boards you might see in airports, doctors waiting rooms or train stations.
My current strategy is to open a photo editing app on my iPhone, write a message, save a jpeg in the photos app, sync the photo across my iPhone/iPad and then assign the photo as wallpaper for the lock screen.
But I'm wondering if there is an app which I can display messages as wallpaper in the lock screen and sync across iOS devices?
SBRotator is a bit awful, but it works.
Apple has a support document that explains this called "iPad: Understanding the side switch".
Here's a quick explanation:
If your iPad has version 4.2.1 or later of iOS installed (Settings > General > About > Version) there are two possible ways your screen can be locked.
The default is the software lock. To adjust this rapidly click the home button twice. This will reveal a bar below your dock. Swipe the icons that are revealed once to the left to reveal some additional controls. Your screen should look like this:
You can also enable a hardware lock. This will cause the small switch on the side of your iPad to lock and unlock screen rotation. The setting for this is found in the settings apps here:
If this setting is set to "Lock Rotation" instead of "Mute" the software lock will be replaced with a mute button like this:
Best Answer
Currently, apps cannot change the wallpaper as you describe. I do not believe it's possible for wallpaper to be synced between devices, either. (You can sync the photos being used, but I don't believe you can sync the choice of wallpaper.)