I have an HTC One S. It was a T-Mobile phone and I am using it on NET10's network. I entered the APN provided by NET10 but was unable to delete the T-Mobile APNs. Everything is working except the MMS. The tex comes through with the tab to download the picture and it says downloading. The picture never appears and then the tab goes back to download. I get an error message that states Message Not Downloaded Transient Failure. Any suggestions?