Time was when a mobile was just for talking.
Then came text messaging, radio, limited internet access, video calling and music downloads - and now comes broadband.
On Friday, the mobile network 3 launched its X-series phone service with high-speed internet access.
Although the near 1Mb speed isn't yet comparable with that enjoyed by many broadband users on their home PCs, the new service has some impressive selling points. For a flat monthly fee, consumers will be able to make unlimited calls over the internet, watch television, access their own home PC remotely, and access internet and messaging services from Yahoo!, Windows Live Messenger and Google.
Essentially, two price tiers are being offered, Silver and Gold, at [pound]5 and [pound]10 a month respectively. This charge is made on top of your existing monthly tariff.
Both packages offer unlimited internet access while you're on the move, and free national and international calls to users of Skype, the low-cost internet phone service.
"Potentially, this [last point] is the most compelling benefit in this package, and means 3 customers can make free calls to other Skype users anywhere in the world from their mobile," says Robert Kenley of price comparison website moneysupermarket.com.
The launch of 3's X-series comes as the number of mobile phone users accessing the internet on their handsets has risen steeply. Thirteen million UK customers were recorded as having used their phones for downloads and browsing the internet in July, according to the Mobile Data Association. In September, the figure was 14 million.
Mobile internet, or "WAP" (wireless application protocol), has been around since 2000 but initially users complained of clunky service, allowing access only to limited content, such as providers' own specially modified pages.
Technological advances and improved microchip processing power have, in the past three years, allowed mobiles to become more sophisticated, so that users can now browse ordinary internet pages, albeit rather slowly. Today, most mobiles offer internet access, and 3's new service is being touted as likely to spark a fresh round of price cuts. This, the industry hopes, will convince consumers to carry on making heavy use of their mobiles.
But internet services on offer vary wildly - so will you be getting value for money as a customer?
The answer depends on which provider you have and whether you are on a contract or pay-as-you-go.
Most providers still take a "walled garden" approach, letting you browse only their own mobile internet content, such as Vodafone live! …