Tap the DOWNLOAD icon for iOS to install One Mobile.
Tap the blue Install button then tap Install on the popup message.
Find the One Mobile app icon on your phone and tap to open it.
If you see the Untrusted App Developer prompt, tap Trust, and proceed to Step 10. Note: If a message displays requesting permission for the app to send you push notifications, tap OK.
OR
If you see the Untrusted Enterprise Developer prompt, tap Cancel and proceed to step 4.