It is quad-band GSM with 3G and HSDPA support. It has a front-facing camera for those all important video calls. Bluetooth and Wi-Fi are both built in too, the latter ideal for a bit of Web surfing that won't bite into your contract allowance.
The built in memory runs to 256MB of Flash and 64MB of RAM. Out of the box with a fresh SIM inserted, my review sample reported 124MB of free storage. That's not too mean for a Windows Mobile smartphone, but in these days of 8GB mobiles from Nokia it does look a little lacking.
You can use a microSD card to add more memory though, and the slot is on the right edge where it is protected by a flip back rubber cover.
The wordsmiths among you will like the fact that Office Mobile is included. This can be used to edit Word and Excel documents and view PowerPoint presentations, though you can only create documents from scratch if you save a template to the device and then rename it. To be fair this is Microsoft's problem, not HTCs, but it rankles nonetheless.
HTC replaces the Windows Mobile home screen with its own ‘HTC Home' screen. On touch-screened devices like the HTC Touch this is an integral part of the ‘TouchFLO' system, allowing you to swipe the screen to get at multimedia on the device and to some applications.
On the S730 it is rather more limited with, quite obviously enough, no swiping features. Nonetheless it does give a rather neat main screen. You can use the navigation button to view three types of information in a large bar at the top of the screen.
One of these is the current time. Press the select button and you can easily set an alarm. Another is a small grid of your top contacts complete with mini photos if you've set these up. The third is weather information. The current day's data is shown fairly large, with a forecast stretching four days into the future also on display.
You can also see incoming emails, voicemails and missed calls, and get a quick squint at upcoming appointments on the main screen. All in all it's quite a lot to cram onto a 2.4in, 240 x 320 pixel screen.