The world’s largest manufacturer of mobile phones will join the PC market with its Booklet 3G netbook.
The Windows-based device is about 2cm thick and will offer 3G connectivity as well as wi-fi.
Analysts said the laptop was a “natural extension” of the company’s product range but the firm would face stiff competition.
Nokia will release price and availability information at an event in Stuttgart on 2 September.
The Booklet has an aluminium case, weighs 1.25 kilograms (2.75 lbs) and its 10-inch screen is HD-ready.
Nokia has released a number of small, “tablet”-style internet-enabled devices in the past to mixed reviews, but this is the first effort which is claimed to be a full-function PC.
“A growing number of people want the computing power of a PC with the full benefits of mobility,” said Kai Oistamo, Nokia’s executive vice president for devices.
“We are in the business of connecting people and the Nokia Booklet 3G is a natural evolution for us.”