4 Reasons Why You Struggle To Get Good Indoor Mobile Signal

Many people struggle to get a poor mobile signal, particularly indoors. Since 85% of all mobile phone calls are made indoors, this can be particularly frustrating.

The key to effective in-building mobile coverage is to provide uninterrupted signal from the mobile network masts. Mobile signal is transmitted from mobile towers via radio frequency signals (RFs). These RFs can be weakened or completely blocked by various obstructions.

Listed below are the top reasons why people struggle with poor indoor mobile connectivity.


The further away you are from a mobile tower, the further the signal must travel to reach you, and the weaker the signal becomes. In the more rural and remote parts of the country, there are fewer mobile towers to transmit signal to you. Place a few natural obstructions between you and the mast and chances are that you have poor connectivity. The good news is that the government has pledged £5bn to improve mobile connectivity in the most remote corners of the country with the Shared Rural Network scheme.

However, this is not only a rural or remote area problem. Whilst urban areas have more towers, the many man-made structures between your building and the mobile tower can prevent mobile signal inside your building. It is often found that on the one side of the building nearest to the tower, has great signal, whereas the opposite side suffer from poor coverage.


The typography of your surrounding areas has a massive impact on the mobile signal inside your building. If the mast is located on a hill, but you are in a valley surrounded by trees, you will more than likely suffer from poor mobile signal. Mountains, hills, and woodlands create natural barriers and absorb mobile signal before they reach you.


When there is a storm raging, thick fog, or other adverse weather conditions, it can easily disrupt the mobile signal. These weather conditions again absorb mobile signal or simply blow them away.


Whilst the distance from the mobile tower, terrain, vegetation and atmospheric conditions plays a big role, it is construction materials that creates the biggest hindrance to indoor mobile signal coverage. Bridges, buildings, and other brick, concrete or metal-based structures are notorious mobile signal repellents.


The good news is that, providing your have mobile signal somewhere in or just outside your home or building, a mobile signal booster can improve indoor mobile coverage. Cel-Fi smart signal boosters are cost-effective and quick to install and provide a stable and reliable mobile connection for voice and data.

Cel-Fi mobile signal boosters use the signal that is available outside the property and brings it inside. It consists of three units: a reception antenna, a signal booster, and an internal rebroadcast antenna. The external antenna detects the signal outside, sends it to the Cel-Fi booster which amplifies the signal and transmits the enhanced mobile signal to the internal rebroadcast antennas that are placed throughout the building.

Cel-Fi products are the ONLY mobile signal boosters available on the market that are licence-exempt and fully comply with the regulatory requirements of Ofcom’s UK Interface requirement 2102 (IR2102) (UK) and ComReg S.I.No.283 of 2018 (Ireland). Contact us today to find out which Cel-Fi mobile signal booster will improve mobile signal in your building.

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