The i-mode capabilities of the Samsung Z320i make it special. Unlike WAP, i-mode services have been specifically created with this type of device in mind, where WAP has always been a cut down version of a standard PC web browser. One advantage with i-mode is greater usability, and this also makes it a more interactive service (WAP tends to be read-only). There's also a "push email" service, which means that you'll receive email notifications more quickly that traditional "pull" services. O2 say that i-mode users make far more use of their i-mode service than WAP users do with theirs.
This is a sliding 3G handset. It comes with a 1.3 megapixel camera, 100Mb of internal memory, stereo Bluetooth and builtin speakers, quad-band GSM and it only weighs 105 grams. As a result, the Z320i is one of the lightest 3G phones on the market.
But there's no removable memory card option. The biggest surprise was that it supported Polyphonic ringtones rather than Truetones – which frankly made the handset sound very dated. The biggest surprises came when trying out the handset's i-mode capability. Why has O2 allowed this handset to lose out on single button access to the mobile Internet – in favour of a common menu system? So you now have to click twice. That's madness. Another disappoint was the browser (from Access). Why on Earth is it not possible to set up a bookmark when the handset has no access to the cellular network? That's exactly when you need a bookmark facility, to save yourself time when you're online.
Samsung Z320i (SGH-Z320i) - i-mode Handset
Samsung SGH-Z320i 3G i-mode mobile phone Review - Pocket Lint
Samsung SGH-Z320i 3G i-mode mobile phone - The Register
Samsung Z320i - Softpedia
Samsung SGH-Z320i sliding handset reviewed