Unfortunately, there's no side volume rocker, which means you'll have to use the toggle to adjust the sound during calls. The only exterior features are the charger port and headset jack on the left spine. We'll let the 2.5mm pass on such a basic phone (normally, we prefer a 3.5mm jack), but we have to complain about the proprietary Nokia charger connection.
Appropriately, the Nokia 2320's feature set sticks to the basics. The phone book holds 500 contacts with room in each entry for five phone number types, an e-mail address, a formal name, a company name and job title, a nickname, a street address, a birthday, and notes. You can save callers to groups and you can pair them with a photo--just remember that without a camera you'll have to be creative about which photos you use. The 2320 comes with eight polyphonic ringtones, but you can assign them only to groups and not to individuals.
Other features include text and multimedia messaging, an alarm clock, a calendar, a full duplex speakerphone, a to-do list, a notepad, a calculator, a timer, and a stopwatch. Bluetooth, sadly, is absent, but you do get instant messaging, PC syncing, packet data support, and a few applications, including Wikimobile, the Weather Channel, Mobile E-mail, and Mobile Banking. Keep in mind that most apps will require data use.
You can personalize the 2320 with a variety of wallpaper, color themes, and alert tones. More options and additional ringtones are available with the WAP 2.0 wireless Web browser. Just be sure to watch your data use on a prepaid phone, as Web browsing can add up on your bill quickly. The 2320 comes with demo versions of three Java games: Collapse, Scrabble, and Midnight Bowl. You'll have to buy the full versions for extended play.
We tested the dual-band (GSM 850/1900) Nokia 2320 in San Francisco using AT&T service. The 2320 offers acceptable call quality for such a basic, affordable phone. Voices sounded natural, the signal was clear, and the volume was strong. As we mentioned, we'd prefer to have a volume rocker, but we suppose you'd get used to its loss eventually. Our only complaint was that voices could sound a bit tinny at times, though it wasn't really bothersome. As a dual-band phone, the 2320 will not work outside North America.
On the other end callers reported good call quality as well. They could tell that we were using a cell phone and though some reported a lot of background noise, the complaints were few. In contrast, speakerphone calls were garbled, and voices were distorted. Also, the placement of the tiny speaker on the rear face doesn't help with the low volume.
The Nokia 2320 has a rated battery life of 3.5 hours talk time and 15 days standby time. We got an amazing 11 hours and 55 minutes of talk time in our tests. According to FCC radiation tests, the 2320 has a digital SAR of 1.47 watts per kilogram.