(Lincoln, RI)--Days before the New England Patriots begin the defense of their latest Super Bowl title, sports-betting in Rhode Island is now available on mobile devices.Gamblers who want to use the Sportsbook Rhode Island app must activate it at Twin River Casino in Lincoln, and will eventually be able to also do so in Tiverton.Sports-betting began at Twin River last year.It currently is facing a legal challenge from plaintiffs who argue the state constitution requires voter approval for the activity.