First, the trim, consumer-friendly BlackBerry 8300 Curve. Then came the Wi-Fi-enabled BlackBerry 8820. Now there’s the BlackBerry 8320 8820-8320 Curve lets you make voice calls wireless 802.11b / g networks too.

Physically, the 8320 is the same as the original BlackBerry Curve, but it is available in two different colors, titanium or white gold. (Contrary to the original curve, which is available from AT & T, the 8320 is available from T-Mobile for $ 300 with a two-year contract.) He has the same design thin and light, a small but very useful QWERTY keyboard, 2 - Megapixel camera, and a gorgeous 320-by-240 display.

The biggest news is under the hood: In addition to support for GSM voice and data networks EDGE, the 8320 adds Wi-Fi with UMA - a technology that allows you to make voice calls over Wi-Fi The phone works with T-Mobile for $ 20 per month (in addition to your plan for voice and data) HotSpot @ Home, a service that allows unlimited calls over Wi-Fi networks While the service is a little expensive, it could potentially reduce your costs by saving your cellular voice minutes.

I tested the phone and the service by using one of T-Mobile HotSpot @ Home wireless routers, manufactured by Linksys. Use of 8320 on the screen of the wizard to connect to a wireless network is a breeze in a few minutes, I was surfing the Web and download files with ease. The 8320 connects to any 802.11b / g wireless network, so you can use your router - or even a public hotspot - to make calls and surf the Web.

T-Mobile says its router (at $ 50, but after a missed free) is designed to keep your phone battery life and prioritize voice traffic, which should - in theory - leads to a better quality of Appeal . However, I noticed no significant improvement when using the T-Mobile router instead of my Linksys wireless router. Call quality of both wireless networks is the same: Decent. There were sometimes garbled, and I noticed an echo, as I did often when you use the phone on a regular cellular connection. Being able to make calls via Wi-Fi is an excellent choice in the regions (like me), where cellular service is irregular, though. (We did not test laboratory phone talk-time battery life, in time for this article to the initial publication, but we will update this review once we have the results - and the PCW Rating for this phone.)

As both for voice calls and use data, the 8320 default is your Wi-Fi network when it is available. Should you leave the network in the range, the phone is supposed to place your call seamlessly to the GSM network (and vice versa) - but in my tests, the experience was not as good. When I went out of the reach of my Wi-Fi network, sometimes dropped my calls, although the cellular service is available.

These glitches aside, the 8320 is an excellent phone. As all units of BlackBerry, it is a stellar e-mail device, with support for ten accounts. The camera included (which sports a flash and a 3X digital zoom) took adequate, but - like many camera phones - sometimes fuzzy snapshots. Among other multimedia features is an audio and video player that supports most common formats (including MP3, AAC, WMA, WMV, MP4). The player’s interface is rudimentary, but the quality is good audio and video looks great. The device also has a headphone jack of 3.5 mm and a microSD card slot (which is bad, located under the phone battery, unfortunately).

Although the quality of voice over Wi-Fi is only passable, the ability itself is still impressive. And combined with the 8320’s elegant design and the incredible e-mail handling, it is a winning package.