iPhone Signal Booster - Does It Suck?

iPhone Linkcase (USA Link) - http://amzn.to/2fCGKVd
iPhone Linkcase (International) - http://geni.us/gg9FD

This gadget claims to enhance the wireless connectivity of your iPhone. The question is... Does it suck?

From the manufacturer -

LINKASE CLEAR isn’t a simply a good transparent case – its better in every way. Thinner, yet dramatically boost your WIFI stronger. Full protection, but remarkably easy to put on and take off. It's one continuous form where engineering and production in perfect unison, creating a new generation of LINKASE that’s better by any measure.

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