HELSINKI (AP) - Wireless equipment maker Ericsson says an improvement in business in China despite the market turmoil there helped its fourth-quarter profit jump nearly 70 percent.

HELSINKI (AP) Wireless equipment maker Ericsson says an improvement in business in China despite the market turmoil there helped its fourth-quarter profit jump nearly 70 percent.

CEO Hans Vestberg, however, cautioned that market conditions are "challenging" in some parts of the world, saying that there is still "a need for further improvements."

The world's largest networks provider reported Wednesday a 68 percent increase in net profit to 7 billion kroner ($820 million) on sales of 73.6 billion kronor, with performance boosted by patent licensing fees.

Broadband expenditure in North America remained stable, while it described emerging markets as "strong."

Ericsson's share price fell 5 percent to 77.95 kronor in morning trading in Stockholm.

Based in the Swedish capital, Ericsson makes infrastructure for mobile broadband networks.