In-building cellular signal boosters
Dropped calls, data that won't load or no signal at all inside the building — even though your phone shows full bars outside. We design and install cellular signal booster systems tailored to your building, so coverage reaches every floor and every office.
Cell signal doesn't penetrate every building the same way
It's common to have full signal on the sidewalk and lose it as soon as you walk inside. It's not your phone or your carrier: the building's structure absorbs or reflects the signal before it reaches offices, basements and interior rooms.
That's why we don't start by installing a generic booster — we start by measuring how each carrier's signal behaves inside your actual building.
Why strong in-building cell signal matters
- Stay connected — employees, customers and visitors stay in touch with family and handle work without interruptions.
- Convenience — customers can easily use apps, mobile payments, loyalty programs and two-factor codes, and service providers (like clinics) operate without disruption.
- Safety — anyone can reach 911 at any time, and the risk of data leaks over public Wi-Fi goes down.
Why signal drops inside a building
Three factors explain most cases, and they almost always combine.
Distance to the carrier's tower
The farther the building is from the nearest cell tower, the weaker the signal before it even tries to get through a wall.
Outdoor obstacles
Neighboring buildings, trees, terrain, or being on the ground floor or below grade weaken the signal before it reaches the façade.
Building materials
Low-E glass, reinforced concrete, steel framing and reflective window film block much of the signal that does reach the building.
How we design the booster system
We survey existing signal by carrier and by floor
Step 1
We measure signal strength at multiple points in the building for every carrier you need covered — AT&T, Verizon and T-Mobile.
We design the antenna and amplification system
Step 2
We define the number and placement of indoor antennas, amplifiers and cable routing based on the building's size and layout.
We install the donor antenna, booster and indoor antennas
Step 3
We mount the donor antenna that captures the carrier's signal and the indoor network that redistributes it floor by floor.

We set gain and prevent interference
Step 4
We tune the system so it doesn't interfere with the carrier's network, using FCC-certified equipment and following carrier requirements.
We validate coverage floor by floor
Step 5
We confirm stable calls, data and texts throughout the building and deliver a report of what we measured.
Where we work

Offices

Warehouses and industrial plants

Retail stores and shopping centers

Hotels

Apartment buildings

Basements and parking garages

Clinics and medical offices

Schools and universities
We measure before and after every install
We measure real cellular signal strength inside the building, carrier by carrier and floor by floor, with professional instruments — before installing the system and again when the job is done.
That way you get a complete, transparent coverage report for the building — the starting point and the final result, measured and documented with certified equipment that meets carrier requirements — not just a promise of improvement with no data behind it.
What's included
Signal report by carrier and floor
Antenna and amplification system design
Equipment installation and configuration
Post-installation coverage validation
The team that designs your network designs your cell coverage
A project engineer surveys, designs and installs the booster system with the same engineering standards we apply to Wi-Fi and structured cabling. It's not a standalone service — it's part of the same communications infrastructure in your building.
This service can be combined with Wi-Fi design, structured cabling, video surveillance and cabling certification, so all of your building's connectivity is handled by one vendor.

We are an authorized Nextivity partner.

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SHIELD ERCES Installation Certification
Certifications held by our specialist, Tamirlan Balashov
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Certifications held by our specialist, Tamirlan Balashov
CEL-FI Installation Certification
Certifications held by our specialist, Tamirlan Balashov
Certifications
Contact us
Tell us where cell signal fails in your building and we'll propose a survey and estimated timeline.