HELSINKI -- Nokia will build all its products in house at least through year-end, Reuters reported, quoting the company's chief financial officer.

As of March, the firm had brought its cellphone builds in house, and subbed out just a few CDMA models in the second quarter, Reuters reported.

Based on market forecasts calling for a 10% drop in cellphone sales this year, Nokia CFO Rick Simonson told Reuters the situation is unlikely to change in the near term. "Volumes for the rest of the year we can handle on our own," he said, Reuters reported.

The news will hit Foxconn, BYD, Jabil and Elcoteq, the hardest. The four firms are Nokia's primary EMS suppliers.

Nokia outsourced 17% of its manufacturing in 2008.