My CIO has the same issue, Tmobile Engineers are willing to put a repeater for him in his apartment in downtown, ny. However, there is this item worth looking into:Indoor Coverage Solutions
Spotwave's carrier-approved indoor coverage solutions seamlessly bring the outdoor signal inside xxx8211; ensuring your wireless devices work reliably indoors where they are being used more often. SPOTWAVE | ZEN (Z1900) | Intelligent Indoor Wireless Coverage System – improve your cell phone coverage at home
How will I know if ZEN (Z1900) (Z1900) will improve my signal?
ZEN (Z1900) is a 1900Mhz intelligent repeater system that supports most carriers in North America using 1900Mhz frequencies. However in some regions where the the wireless carriers are using 800Mhz, ZEN (Z1900) will not be able improve the signal.
To ensure that our customers only buy a product that will work in their region, Spotwave will provide a handy online Verification Tool, based on a "ZIP Code" when the product becomes available.
WIll ZEN (Z1900) improve WiFi signals?
ZEN (Z1900) only improves coverage cellular phones, air cards, and mobile devices operating on licensed carrier networks. ZEN (Z1900) will not improve WiFi signals or cause interference with WiFi or any other wireless signals.
Rely on cell phones, PDAs and other mobile devices to work where you need them most xxx8211; indoors!
No more dropped calls
Clear voice quality
Faster 3G data performance
Extends battery life
Coverage up to 2500 sq ft