We can do something.
At the bus stop ... kids who send and receive sms by cellular phone.
They are walking and they are sending sms again.
In classroom ... writing and receiving again sms.
And if you speak with them, they read the stupid sms too
Too bad !!!
They will grow with potatoes into their brains.
Yeah, and someday those same kids will think to themselves: "Hmmmm, I probably shouldn't be texting during my job interviews. Ok, phone away." Either that, or someone will get pissed at them, and tell them that there are other things to do as well. In the same way, take a look at the more immature players on these forums - the one consistent pattern you see with them is (you'd better sit down before this next bit - it's REALLY surprising) that they MATURE!
And you said "We can do something", yet you fail to mention what that 'something' is. How about the next time some kid tries to talk to you while texting, you tell them that it's impolite, and that they should not do it (or if they actually do have to check their messages, tell them to say 'excuse me for a few seconds, I need to do this quickly'). And if they get all snotty with you, then calmly explain to them why they're wrong. Even if they act snotty to your face, they won't forget what you say.
Edit: Why do people have to assume that if all the children they see from day to day do something, therefore all children do that thing? It's a stupid assumption to make - there's no way that the children you see from day to day are a fair sample of the entire population of children in the world.