Essentials include a vibrate mode, text and multimedia messaging, a calendar, an alarm clock, a to-do list, a notepad, a calculator, a stopwatch a world clock, a converter, and a speakerphone. On the higher end, you'll find Bluetooth, PC syncing, USB mass storage, voice commands, Web-based POP3 e-mail, Adobe Flash Lite 2.0, a voice memo recorder, and instant messaging. On the upside, it also has integrated Wi-Fi for use with T-Mobile's HotSpot @Home service.
The 2-megapixel camera takes pictures in six resolutions, from 1,600x1,200 down to 160x120 pixels. It also offers three quality settings, a self-timer, a multishot mode, six color effects, and an adjustable white balance. The flash should be sufficiently bright for most situations; you can even keep in steady mode and use it as a flashlight. The 7510 doesn't offer a choice of shutter sounds, but you can turn it off.
The video recorder shoots clips in two resolutions (176x144 and 128x96 pixels) with sound and has a set of editing similar to the still camera. Messages meant for multimedia messages are capped at 56 seconds, but you can shoot for longer in standard mode. Photo quality was good for the most part. There was little image noise but most of our shots were rather overexposed. Videos were decent--not great--but better than on comparable phones. The 7510 has a respectable 27MB of internal memory and accommodates memory cards up to 512MB.
Music fans can use the 7510's digital player. Though it is minimalist to the core, it offers playlists, and an equalizer, and stereo widening. Getting music on the phone was relatively easy; we could transfer the files over a USB cable or with a memory card. You also get an FM radio, though you must use the included wired headset since it acts as the antenna.
You can personalize the 7510 with a variety of background colors, wallpaper, and alert tones. More options and additional ringtones are available from T-Mobile's t-zones service using the WAP 2.0 wireless Web browser. The handset comes with demo versions of three games: Midnight Pool, Pac-Man/Ms. Pac-Man, and Are you smarter than a fifth grader? You'll have to buy the full versions for extended play.
We tested the quad-band (GSM 850/900/1800/1900; EDGE) Nokia 7510 world phone in San Francisco using T-Mobile service. Call quality was satisfying by most accounts. We enjoyed clear audio with no static or interference. Voices sounded natural as well. The volume was a tad low, however. We had to strain to hear in very noisy situations even when the volume was at its highest level. Likewise, while speakerphone calls were clear, the volume was too quiet.
On their end, callers said we sounded fine. They could hear us plainly even with a lot of background noise. A couple of our friends said we sounded tinny, but they were in the minority. Automated calling systems could understand us well, though we had to be very close to the handset if we wanted to use the speakerphone.
The 7510 has a rated battery life of three hours talk time and 12 days standby time. The former rating is a bit low when compared with other GSM phones, but the latter is about right. Luckily, the tested talk time ended up being 8 hours and 12 minutes. According to FCC radiation tests, the 7510 has a digital SAR of 0.84 watts per kilogram.