I find this ironic. It is an umbrella with solar cells. If it is sunny out, one would not need the umbrealla. When it is raining, the sun would (probably) not be out to power the solar cells. I think it would be better as a parasol. 8)
(http://images.gizmag.com/hero/vodafone-booster-brolly.jpg)
Gizmag.
http://www.gizmag.com/vodafone-solar-powered-signal-boosting-umbrella/22957/ (http://www.gizmag.com/vodafone-solar-powered-signal-boosting-umbrella/22957/)
You certainly find some crazy gadgets BWG :D