3, which claims it has the UK's largest 3G network, will stock the Apple iPhone 4 – the latest version of Apple's smartphone that was announced by the company this week at its Worldwide Developers Conference (WWDC).
The new handset, which features an all-new design, has "well over 100 new features" including an HD screen, video calling, a gyroscope, a new iMovie app and countless other upgrades.
Like the other networks, 3 has not yet revealed pricing for the handset, or a date when it will be made available. Although, the other four networks have said the handset will land on June 24.
Consumers can register their interest with 3 using its dedicated web page. Users of the other networks can register their interest in the box below.
See also: O2 unveils iPhone 4 early upgrade offer