As long as students aren’t making noise I don’t see why they shouldn’t be allowed to text. Just fail them, then give them jobs working, for example, in the acid mines for minimum wage.
And if they can do all the work while texting and ignoring your stupid lecture, so much the better.
*ahem* umm, the security job was um, a night job. You know, we teachers need some extra income. Because we only work until 2:30, 8 months a year, and then need to be able to pay for our 3 month long holidays going around the world. Hmm. Yeah. Thanks for noticing though. Yeah, thanks a lot.