The i-mate JAQ is otherwise known as the Inventec Mercury, sourced from a different Taiwanese firm from HTC. Although i-mate haven’t officially split from HTC, this new partnership follows O2’s move to source some of it’s Windows smartphones from manufacturers other than HTC, and comes against a background of HTC selling handsets under its own name for the first time.

The BlackBerry’s manufacturers RIM have successfully pushed out variants of the 8700 into many major markets. Although primarily sold as the 8700g, there are also network specific versions for Rogers of Canada (8700c), Orange and subsidiaries (8700f) and Vodafone and partners (8700v). The differences between the models appear to be mainly styling and software.

Buy BlackBerry 8700 directly from Amazon

The BlackBerry Pearl 8100 is a much more compact device than the 7130. The BlackBerry 8100 comes in at 107×50x15mm and just 90 grams, compared to the 7130’s 115×56x18mm and 120 grams. But, the Pearl manages to fit in a 1.3 megapixel camera, expandable memory and an MP3 player, making this a much more consumer friendly handset than the business-orientated BlackBerry devices that have gone before.

The SPH-P9000 is an EV-DO (3G CDMA) device with WiMAX (802.16) support, which means that the SPH-P9000 had high-speed data access wherever it can get a WiMAX or EV-DO signal.

It’s a hefty beast, weighing 560 grams (1lb 2oz in old money), and it measures 143×92x30mm (5.6 x 3.5 x 1.2 inches). There’s a novel folding keyboard, and the main display is a 5″ 800×480 pixel unit, and there’s a 1.3 megapixel camera facing the user. Internal storage consists of a 30Gb hard disk and the SGH-P9000 has Bluetooth too.

PDAs and smartphones can browse the Web, but small screens and poor support for JavaScript and plug-ins can make browsing a cramped and unsatisfying experience. UMPCs give you a standard browser but they’re still too big (and expensive) to carry all the time. Nokia’s 770 Internet tablet fits – not necessarily neatly – in the middle, in terms of size, price and features.

Just like T-Mobile’s Dash and Verizon’s Motorola Q, the BlackJack is a Windows Mobile 5.0 Smartphone slab sporting a 320 by 240 screen, a full keyboard and a 1.3-megapixel camera on the back. In many ways, it’s a cross between those two other phones. Like the Dash, it’s a quad-band world phone, it’s black, and it’s almost the exact same size. Like the Q, it uses a high-speed national cellular network rather than Wi-Fi, the keys are long slanted ovals, and it has a handy scroll wheel on the side as well as cursor keys for navigation. At 4.5 by 2.3 by .5 inches and weighing 3.5 ounces, it’s smaller and lighter than both the Dash and the Q.