Two-thirds of all thefts and robberies involve mobile phones being stolen, according to new figures from gardaí.
The figures from the Garda Síochána Analysis Service released today also show that two in five phone thefts take place on a road, street or footpath.
One in five occurs in a pub, nightclub or other licensed premises.
The figures are being released as part of a new personal safety campaign, which runs throughout March.
The campaign, called Streetwise, is targeting 18 to 39-year-olds, urging them to plan their nights out and mind their personal possessions.
The figures show that three of every four victims of phone theft are aged between 18 and 39 and two in five thefts occur between 10pm and 4am on Friday, Saturday and Sunday.
A total of 5,703 phones were stolen last year, with a combined value of more than €2.5m, a reduction of 14% compared to the previous year.
In March last year 498 phones were reported stolen, compared to 641 in March 2015.
As well as advertising and social media, gardaí say the campaign will include increased patrolling at night in locations identified as having high levels of street robberies and assaults.