Google has cut the list of blocked numbers on its Voice service to under 100. But that’s unlikely to satisfy critics who argue that blocking even one number breaches regulations.

Until now, Google Voice’s biggest drawback has been the need to learn and pass round a new phone number. That’s about to change with the introduction of tools allowing users to tie an account to their existing number, though with some limitations.

Walmart is offering unlimited voice calls, text and mobile Web use for $45 a month. The retailer is also offering a $30 a month deal which may be enough for many users.

The Federal Communications Commission is investigating claims that Google’s Voice service is breaching regulations by blocking some calls to rural areas. It’s reopened the debate about the way traditional phone networks and those which carry voice calls over data connections are regulated.

There are a growing number of phone apps which take advantage of the way cellphones work to provide location-based tools such as navigation. But now one of the biggest firms in the Global Positioning System marker it making its own handset.

Windows Mobile 6.5 won’t be Microsoft’s flagship mobile system for long, but it will be debuting with a bang. The firm says at least 30 devices, from 15 manufacturers, will be running the system before the end of this year.

Google is bringing the always-on “push” version of Gmail to both the iPhone and Windows Mobile devices. It plugs a gap in Google’s services on such devices, though could noticeably diminish battery life.

A list of cellphone radiation emission rates shows there is a wide gulf between the best and worst performing handsets. However, there’s very little difference between the levels of the 10 worst handsets.

African Americans are disproportionately likely to access the internet through mobile devices. The trend is drastically cutting the information gap between African American and white Americans.

ZER01 has officially launched it’s all-in service package offering unlimited voice and data use for $70 a month. The only problem is that it’s not actually possible to sign up to the deal yet.