MOBILE phone operators 3G Ireland and Meteor as well as retailer Carphone Warehouse have admitted breaking data protection regulations by sending unsolicited text messages and "spam" emails to customers.
The companies pleaded guilty at Dublin District Court following investigations by the Data Protection Commission.
The watchdog had received complaints from customers who had received unsolicited promotional texts and emails.
Deputy data commissioner Gary Davis had also received an unwanted promotional call from a 3G Ireland shop manager.
Judge O'Neill said he would strike out Meteor's case if they donated €5,000 to Temple Street Children's Hospital by December 17.
Phone operator 3G Ireland admitted three offences.
Judge O'Neill ordered 3G Ireland to donate €2,500 to Crumlin Children's Hospital. He said their prosecution will be struck out if the money is donated by December 17.