hi, How do you boost the signal for any Data signal for carriers? in the office of a 10 story building in north Irving Texas.. the 3G and 4G signal for Sprint is very poor. the signal for calls is good enough, but the data speeds are not usable. we even tried the wifi device from sprint for hotspots. so a coworker did an online search and found this: Mobile Signal Booster, 3G Booster, Mobile Internet Signal, Mobile Broadband | Alternative Wireless "We've been improving cellular reception for mobile phones for over a decade. The same technology can be used to improve the reception of your mobile broadband cards from Sprint, AT&T, Verizon, T-Mobile and others. Better mobile broadband reception means faster data speeds. Looking for a 3g booster or EVDO antenna? We offer options as simple as attaching an external antenna to your PC Card up to improving the mobile broadband signal throughout a building for multiple users." what do you guys think of this as solution? anyone try this yet? any reviews?