It appears you are using an older browser that is no longer supported by our website. For a better web experience it is strongly recommended that you upgrade to a newer browser. If you are running Internet Explorer, and are unable to update, we recommend using either Chrome or Firefox.
Next Day Delivery
14 Day Money-Back Guarantee
Buy Now

3G / 4G / LTE Mobile Phone Signal Boosters

Do you struggle to maintain a mobile phone signal in your home or office? Does your mobile phone line break up during an important phone call?

Finally, there is a solution for poor signal strength at home and the office. Cel-Fi’s mobile phone signal booster strengthens your signal indoors by up to four times, providing clear voice conversations and greater data throughput- there’s no need to restrict your mobile conversations to outside. Available in the PRIME for small homes, the DUO for homes and small businesses, the PRO for small to medium enterprises and the QUATRA for medium to large enterprises Cel-Fi UK offers legal mobile phone signal boosters for 3G, 4G and LTE voice and data for all UK mobile networks: O2, Vodafone, Three and EE (and all virtual network operators, e.g. BT, Giffgaff, Virgin Mobile, Sky Mobile etc.). Designed and produced by Nextivity.

Ready for Cel-Fi? Choose your network:


See all supported Networks

Strengthen Indoor Signal

Cel-Fi is designed to improve indoor mobile phone signal for 3G and 4G users. It creates a large coverage bubble of improved signal that automatically adjusts to the size of the building – making it ideal for homes and Small-to-Medium businesses.

Easy Installation

Cel-Fi units use simple plug-in and play technology! One unit sits near to your window to pick up signal, and the other sits in the centre of the building. An intuitive indicator helps locate the optimum distance between the window unit and the coverage unit for the best signal range.

Reduce Dropped Calls

With increased connectivity to your 3G and 4G data, you can ensure improved voice clarity, reduced dropped calls and faster data transfer rates when downloading videos, photos, emails and data to your smartphone.

How it works

  • The fully wireless system works by placing the Window Unit in the 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.
  • 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.


Technical specs get cel-fi today

X
Subscribe to our Newsletter
and get a £10 discount!
Would you like to be one of the first to receive exclusive information about the latest products, updates and news from Cel-Fi Signal Boosters?

Then just subscribe to our free newsletter now, and you will also receive a £10 discount code on your email, to use on your first order!