Delivery reports: Checkmark to allow your phone to receive delivery reports for the multimedia messages you send.
Allow delivery reports: Checkmark to send a delivery report when it’s requested.
Auto-retrieve: Remove the checkmark from to download only the heading of multimedia messages, so you can manually download the whole message when you’re ready. This is useful for controlling how much data you download.
Roaming auto-retrieve: Checkmark to automatically retrieve messages while roaming.
Priority: Tap to set your multimedia message priority. Choose from Low, Normal, and High.