Drivers caught using a phone within two years of passing their test will have their licence revoked under new rules in England, Scotland and Wales.
Effective from today, penalties for using a phone at the wheel double to six points and a £200 fine.
New drivers who get six points or more must retake their practical and theory. More experienced drivers can be banned if they get 12 points in three years.
Use of a handheld mobile phone behind the wheel will be punished whether you are making a call, using it on loudspeaker, texting, filming, taking a picture or using the internet, and the law applies even when you are sitting stationary in traffic.
In 2015 – the latest year for which figures are available – 22 people were killed and 99 seriously injured in accidents where a driver was using their phone.
Police forces have begun a seven-day crackdown, with extra patrols and an “increased focus” on people using their phones while driving.
About 3,600 drivers were handed penalties in the last co-ordinated enforcement week from 23-29 January, the Department for Transport said.