Huawei has announced the Ascend D quad, described as “the world’s fastest smartphone”.

It’s powered by the company’s own quad-core processor, which apparently reaches 1.5GHz, runs on the Android 4.0 operating system and is equipped with Huawei’s proprietary power management system, providing up to 30% power saving compared to other devices. The 1800mAh battery is claimed to last for up to two days under normal usage.

Nokia is planning a software update to resolve battery problems with some versions of its Lumia 800 smartphone.

The company says an update is already being rolled out and another is scheduled for early next year.

CellEra, an Israeli company that is developing platinum-free fuel cell technology, has announced a $9.2 million investment round led by Vodafone Ventures and Carmel Ventures.

Vodafone Ventures is the global venture capital arm of Vodafone Group.

The Advertising Standards Authority has upheld a complaint against Sony Ericsson for the phone specifications shown on its website.

The web page for the Xperia X8 smartphone claimed ‘Standby time (up to) 446 hours’ with a note below reading ‘Battery performance may vary depending on network conditions and configuration, and phone usage’. An ASA investigation was launched after receiving a complaint that suggested the standby time for the smartphone was substantially less than the advertised figure.

Rosanne Skirble of voanews.com writes:

Scientists at the University of Wisconsin-Madison have developed a technology that turns human motion into electricity.

In this week's journal Nature Communications, they describe how to power a cell phone or other mobile device - like a laptop computer or GPS system - by simply taking a walk.