Huawei, the Chinese company rumoured to be behind London Underground’s incoming mobile phone network, has fought back over allegations that it poses a threat to the US' national security. Read more on Huawei's open letter

Dell has finally begun selling the Windows Phone 7 Venue Pro on its own website, although there's no sign of it making it to the networks' shops yet. Read more about the Venue Pro

HTC has confirmed that it will bring Android’s Gingerbread operating system update to the Desire, Desire Z, Desire HD and Incredible S this summer. Read more on HTC's Android updates

Vodafone customers across the UK are facing a complete lack of mobile phone services following a break-in at the operator’s technical facilities. Read more on Vodafone's network problems

Our mobile mystery shopper grills a Virgin customer service rep on a series of mobile internet questions. Find out how he did in the latest instalment of our mystery shopper series. Read more on Virgin's customer service skills

Which?'s mystery shopper calls up the UK's major mobile phone operators to find out how good their customer service skills really are. Read more on our Mystery Shopper series

The Android Market’s Facebook app may be putting users privacy at risk, by failing to encrypt personal data sent to the social network, according to a university professor. Read more on Facebook's loose encryption

Network operators should be forced to offer a free SMS text service to emergency numbers, according to industry regulator Ofcom. Read more on emergency services texting

Scientists in the US have published a study suggesting that mobile phone use may have an effect on the brain. Read more on mobile phone effects on the brain

Microsoft’s first update to its Windows Phone 7 operating system, which rolled-out earlier this week, has caused some Samsung Omnia 7 devices to crash according to reports. Read more on the WP7 update problems