How do the Signal Boosters Work

This article applies to Plug-n-Play units (Cel-Fi PRIME, Cel-Fi DUO, Cel-Fi PRO). Please read the relevant product pages for boosters that require installation like Cel-Fi GO X.

The Cel-Fi mobile phone Signal Boosters are legal to use and extremely easy to install:

  • The fully wireless system works by placing the Window Unit in an area of the building with the strongest signal (normally on a window sill).
  • It takes this signal, as little as 1 bar, and amplifies it to up to 5 bars.
  • The Coverage Unit is then placed a reasonable distance apart (normally in the centre of the building) and works to create a bubble of stronger signal distributed across approximately 13,000 sq ft. (for the DUO and PRO models) or 1-2 rooms (for the PRIME model)
  • The system works wirelessly with all phones that operate with 3G or 4G signal – there is no need for an internet connection or to pair your device with the Cel-Fi unit.

Differences of gainCel-Fi signal boosterTraditional analogue booster
Gains in dB100dB (or 1,000 times the most powerful conventional boosters (70dB))Most boosters: 60dB. The more expensive boosters provide up to 70dB, or 1,000 less gain than Cel-Fi
CoverageUp to 13,000 sqftMost boosters: 3,000 to 6,500 sqft. The more expensive boosters that provide up to 10,000 sqft need complex indoor antenna installation.
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