Pupils should hand in their mobile telephones at the start of the school day, according to a Highlands and islands MSP.
Mary Scanlon called for the classroom ban following the release of figures showing more than 2,000 instances of youngsters being disciplined for using the devices over the past three years.
The true figure is likely to be much higher as two-thirds of councils – including those in Aberdeen, Aberdeenshire, Highland and Moray – do not collect information on the issue.
Figures obtained under freedom of information showed 2,175 incidents involving mobile telephones in classrooms between 2010-11 and 2012-13.
Although there were a handful of exclusions and suspensions, the bulk of cases were dealt with formal warnings of punishment exercises.
In one case, in the Western Isles, a pupil was disciplined for “using a mobile telephone inappropriately to take a photograph of an incident between two pupils”.
The figures show the Western Isles had 38 incidents, compared to just one each for Shetland and Argyll and Bute. Orkney had seven.
The highest numbers were recorded by Fife (1,159), Renfrewshire (338), Perth and Kinross (298) and Borders (238).
Ms Scanlon, Scottish Tory education spokeswoman, said: “It is simply too easy for pupils to access a mobile phone in their pocket, distracting themselves and others in the process.
“This is something parents and teachers want to see us get tough on – it should very much be the norm that mobile phones are handed over at the classroom door.”
Catriona Stewart, Western Isles education and children services, said the council’s figures showed regulations were enforced.
“I would imagine it is something that over time will probably get worse across the country, but it depends on the way the figures are reported,” she said.
A Scottish Government spokesman said: “We have provided guidance to all schools on how to include appropriate use of mobile and tablet technology in classes.