If you live or work in an area where cell phone reception is poor, instead of grumbling at your service provider, it's better to tackle the issue yourself by installing the Cellranger. This USB dongle notches the signal by 2-3 bars and has a 6ft coverage radius. It provides Voice and 3G Data support as well. It also comes in a 12V cigarette-lighter edition.

The Cellranger costs $150.

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