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Cellular Signal

Does anyone know what is the best device to Boost celluar signal inside a big brick building?
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IT Manager
Distinguished Expert 2019
Some cell providers have an alternate method that may or may not be a better solution.  They'll sell (typically $150 or so) a device that connects to your internet connection and acts as a local cell tower.  Depending on a number of factors (support by your cell provider, if you have only one cell provider, your internet quality, etc.) this may be a better solution.

The repeater antenna method mentioned is a more comprehensive solution, though more expensive and difficult to install.  It all depends on your actual requirements.
Top Expert 2014

Picocell or femtocell solutions are available
Something like this. Depends on your square footage.