Before we get to casinos, we should warn you that like most places, it's illegal for drivers to text or use a hand-held cell phone while behind the wheel in Nevada. Feb 10, - As cell phones and PDAs get more powerful, mobile gambling gets closer to reality. which is expected to bring in $5 billion this year for casinos and game operators. Mobile Internet usage is also about to get cheaper. Apr 15, - At online casinos you can use your cell phone to play games, download casino apps or slot games apps. You can also talk with your friends or.