The Motorola RAZR XX is Motorola’s second HSPDA(3.5G) RAZR handset announced this week, alongside the Motorola RAZR MAXX. Quite why Motorola needed to develop two such similar handsets is a mystery, but here it is anyway.

It looks very much like the RAZR V3i from the outside, but there are subtle differences in the styling that indicates that this isn’t just a V3i with HSDPA crammed into it. To quote Motorola, the RAZR XX has an “updated & streamlined Motorola RAZR V3 design”.

The Sony Ericsson K610im is an i-mode version of the lightweight K610i 3G phone. It’s an incredibly light 3G phone, weighing just 89 grams, but it still manages to fit in a 176×220 pixel display, 2 megapixel camera and Memory Stick Micro expandable memory.

As far as we know, this is Sony Ericsson’s first i-mode phone and it’s one of only a few 3G i-mode phones around. And since the K610im is based on one of the hottest 3G phones of 2006, then it’s an attractive option for i-mode users.

The unique feature of the KG920 is the camera – it’s a 5 megapixel camera phone, which would make it the highest resolution camera phone when it is launched in Germany in the summer.

The KG920 looks exactly like a digital camera from the back. From the front it does look a little strange, but all the usual buttons are somewhere. The 5 megapixel camera has autofocus and a strobe flash, but no optical zoom. It can take VGA quality video clips though (at 30 fps), and save everything onto miniSD cards, although internal memory is a pretty decent 128Mb.

The Samsung X520 is a low-cost an lightweight clamshell phone with a fairly basic feature set, wrapped up in an attractive and boldly designed package.

It’s an attractive handset to look at, and it certainly looks different from most other Samsungs, althouth we have seen this “rectangular” look with the recent Samsung E420 and E870 phones, although it’s more pronounced on the Samsung X520.

The O2 XDA Trion is a step up from the O2 XDA Mini S (based on the HTC Wizard). It has a 240×320 pixel display in 65,000 colours, a 2 megapixel main camera with a secondary camera for video calling, 64Mb of internal memory, Bluetooth 2.0 and Wireless LAN support and a 400MHz processor (possibly an ARM-based Samsung S3C2440).

Carrying the XpressMusic name, the Nokia 5300 looks great, especially with the clever dedicated multimedia keys, but ultimately it’s a pretty standard handset roughly analogous to the Nokia 6131 clamshell. There’s a QVGA 240×320 pixel TFT display, a 1.3 megapixel camera, microSD memory expandable to 2Gb, Bluetooth, a stereo FM radio and an MP3 player in a package weighing 104 grams.

The first thing to note is that UMTS in the US is not the same as UMTS everywhere else in the world – it’s an 850/1900 MHz UMTS device rather than the UMTS 2100 MHz standard that pretty much everyone else uses. It does have quad-band GSM and EDGE support though, so you can still continue to use the LG CU500 more-or-less anywhere in the world.

Motorola FONE F3 (also known as the MOTOFONE) is a very slim bar format phone that’s due to hit the market by the end of the year. There are two versions – the FONE F3 is a GSM handset, the F3c is a CDMA version for North America and other CDMA markets.