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SolidRF BuildingForce 4G K1 Cell Phone Signal Booster

SolidRF BuildingForce 4G K1 Cell Phone Signal Booster

$499.00 $599.00




  • Cellular (band 5)
  • PCS (band 25/2)
  • LTE (band 12)
  • LTE (band 13)
  • AWS (band 4)
  • AT&T 2G, 3G, 4G HSPA+ & 4G LTE
  • Verizon 2G, 3G, 4G LTE & XLTE
  • Sprint 2G, 3G & 4G LTE
  • T-Mobile 2G, 3G, 4G HSPA+ & 4G LTE
  • US Cellular 2G, 3G & 4G LTE
  • All other carriers using 700 MHz, 800 MHz, 1900 MHz, and AWS 1700/2100 MHz frequencies

Inside Coverage Area (Square Feet)


Outside Signal


Outside Signal


Outside Signal





Stop walking around to find a stronger signal at home!

Never experience a dropped or missed call again with BuildingForce 4G from SolidRF. Ideal for your home or office. This device captures the cellular signal outside, enhances and rebroadcasts it indoors, so you can enjoy crystal-clear phone calls, while reducing dropped calls, and superfast data speeds.

The booster lets you wirelessly connect over 25 mobile devices and works with 2G, 3G and 4G networks in US and Canada.



  • Serves as an in-building solution
  • Easy to set up with all hardware included
  • Boosts signal for all US and Canadian cell carriers
  • Supports multiple users
  • Automatic gain control ensures reliable coverage even with an intermittent incoming signal
  • Three watts of radiated TX power


  • Improved inside cellular voice and data signal
  • Reliable cell signal and more consistent data speeds
  • Faster data downloads
  • Reduce radiation and increase battery life, up to 2 hours additional talk time in weak-signal areas
  • Automatic oscillation control and network overload protection to maintain maximum gain at all times
  • Increase coverage for an area up to 3,500 square feet
  • Protects cell sites from harmful interference

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