What is the penalty for being caught for illegal mobile phone use?

The fine for illegal mobile phone use is $344, or $457 if detected in a school zone. There is a five-demerit-point penalty for illegal mobile phone use, which increases to 10 demerit points during double-demerit periods.
These fines and demerit point penalties apply to both camera-detected offences and infringements issued by NSW Police.
Warning letters will be issued for three months from 1 December 2019, during which time drivers caught using their phones illegally will be sent a warning letter to encourage them to change their behaviour.