Edit: As astude reader johnnie points out - this device supports 850 MHz which of course makes it a quad band device.
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It goes without saying that these devices carry different radios to cater to regional needs, with the Droid DNA and the J Butterfly both supporting CDMA and LTE on top of UMTS. However, only the Droid DNA comes with quad band UMTS radio, thus making it a better global phone.
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The Lumia 800 is a quad-band phone while the 710 is a tri-band device.
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This will work as long as the frequencies match, which is a good bet for quad-band phones.
There's also a memory card reader, a SIM slot for quad-band 3G (WCDMA) and Bluetooth 4.0, in case you want to pair it with any wireless peripherals.
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"There are devices that work just about anywhere, particularly if you're on a GSM network and have a quad-band phone, " says Michael Gartenberg, an analyst with Jupiter Research.
In all cases, quad-band GSM is part of the mix.
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As we previously reported, the specs on their production quad-band S101 model leave little to be desired as folding smartphones go, with 128MB of RAM, 64MB of ROM, a 2-megapixel shooter, 400MHz of the XScale PXA263 variety, and Qtopia's mobile Linux platform in a 210-gram package.
Whereas the original prototype had a thin, flimsy shell, the Virta 2's gone downright rugged, ditching the iPhone chrome for a more durable gunmetal frame, and there's a full compliment of sensors (compass, accelerometer, ambient light and proximity) alongside quad-band radios, WiFi, Bluetooth and a pair of cameras for your video chat testing needs.
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We think PC Mag would agree that the company's quad-band GSM VK2020 musicphone -- that, like the models, we also spotted at CeBIT -- falls in line with this assessment, as their review highlights the handset's RAZR- and SLVR-killing thinness and "wow factor, " but knocks it on nearly every aspect important to people who actually like their stuff to function properly.
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