If texting in meetings is one of your team's bad meeting habits, you're experiencing a symptom of poorly structured meetings. You can attack the symptom by asking people to place their phones in a basket when they enter the room, or by making a "No Tech!" rule. Lots of people try tactics like this and it can make a short-term difference. The better solution here is to tackle the underlying system that's making it acceptable for leaders in your organization to run unproductive and disengaging meetings in the first place.