Yes, if they use it in class (during a 45minute lecture (default lecture length here)) it should be confiscated for the whole day (or whenever parents can pick

Yes, if they use it in class (during a 45minute lecture (default lecture length here)) it should be confiscated for the whole day (or whenever parents can pick it up). They're obviously not responsible enough to keep the phone with them and not-use it during class (to be able to follow the lecture during that time).