Carphone Warehouse has appointed UK brand consultancy Figtree to handle a European upgrade campaign due to launch in the next couple of months.
The agency will handle all communications aimed at improving upgrade take-up in France, Germany, Spain, Portugal, Ireland, Sweden and The Netherlands.
The campaign will include direct mail and telemarketing elements, as well as in-store and SMS promotions.
Figtree currently carries out similar work for international brands including Orange, Yahoo and Microsoft.
Carphone Warehouse is currently undergoing a corporate restructure in a move that could see its broadband business Talk Talk separated from its high street retail operation.
The retailer defied the gloom on the high street by posting a 13% increase in retail sales in Europe to £1.01bn over the Christmas trading period, but sales for Talk Talk dipped 2 % to £347 million in spite of adding 36,0000 new users to take its total to 2.7 million.