A driving instructor was caught setting a bad example for their pupil when Derbyshire police spotted them on the phone while teaching.
Officers pulled the car over in a Renault Clio on the A38 near Alfreton on Friday.
Derbyshire police's roads unit tweeted: "What hope has a learner got when your instructor is on the phone when they should be supervising you? #BadExample #ItCanWait #Ticket."
A police spokesman confirmed that a ticket was issued for using a mobile phone whilst supervising a learner driver.
The law cracks down on this because a driving instructor may not be able to act to assist the learner driver if they are on the phone.
The spokesman said the driving instructor had six points put on their licence and was given a £200 fine.