The Sanyo RL4930 has an average feature set that is useful without being remarkable. The phone book holds 500 contacts, with room in each entry for six phone numbers, Web and e-mail addresses, and notes. Be advised, though, that the phone book can hold only 700 numbers total. You can pair contacts with a picture and one of 17 polyphonic (32-chord) ring tones, but there are no caller groups. On the other hand, you can use caller groups in the separate Ready Link phone book, which holds 400 contacts total.
Other features include a vibrate mode, a calendar, an alarm clock, a calculator, a stopwatch, a world clock, PC syncing, text messaging, and a WAP 2.0 wireless Web browser. You can activate the speakerphone before you make a call, which is a nice touch, and the voice recorder's ability to hold up to 130 minutes impressed us. Total memory for downloads is 2MB.
We tested the triband Sanyo RL4930 (CDMA 800/1900; AMPS 800) in San Francisco using Sprint's service. Call quality was satisfactory with good volume, but voices sounded hollow on our end. Callers had trouble hearing us from time to time, and they could tell we were using a cell phone. Speakerphone calls were relatively clear, and through the speaker faces of the phone, they were loud enough. Ready Link calls were on a par with normal calls: fine but not exceptional.
Sanyo rates the talk time at 5.5 hours, and we got 5 in our tests. Standby time was fantastic; the phone lasted an impressive 20 days. According to FCC radiation tests, the Sanyo RL4930 has a digital SAR rating of 0.37 watt per kilogram and an analog SAR rating of 1.13 watts per kilogram.