The Sony Ericsson J300a's feature set is spartan, but that's not a bad thing. There's a 510-contact phone book with room in each entry for five phone numbers, an e-mail address, a Web address, a street address, business title and company, and notes (the SIM card holds an additional 250 contacts). There's photo caller ID too, but since the J300a has no camera, you must download the images or receive them in a multimedia message. You can also organize contacts into groups and pair them with one of 22, 40-chord polyphonic ring tones. Other features include a vibrate mode, the aforementioned speakerphone, a voice recorder, a calendar with PC-syncing capability, a task list, a notepad, an alarm clock, a timer, a stopwatch, a calculator, text and multimedia messaging, and a unit converter.
You can personalize the Sony Ericsson J300a with a variety of wallpaper, screensavers, or color themes. If you don't like the options included on the phone, you can download more choices with the WAP 2.0 wireless Web browser. You can also get more ring tones or compose your own with the MusicDJ composer. Gamers get just two Java (J2ME) titles, Darts and Fighters, but you can always download more.
We tested the dual-band Sony Ericsson J300a (GSM 850/1900; GPRS) in San Francisco using Cingular's network. Call quality was admirable with solid clarity and volume. Callers said they could hear us, and we encountered little trouble from other electronics equipment. The speakerphone, however, sounded quite muffled; the speaker is on the back of the phone, so you'll be wise to lay the phone facedown when making a speakerphone call. Battery life was acceptable; we beat the rated talk time of 7 hours by an extra hour and managed six days of standby time on a single charge. According to FCC radiation tests, the J300a has a digital SAR rating of 1.12 watts per kilogram.
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