Best Cellular Security Systems in 2025

We recommend SimpliSafe if you need a security system that works with Verizon and T-Mobile and when the internet is down.

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By Aliza Vigderman Aliza Vigderman, Senior Editor, Industry Analyst & Gabe Turner Gabe Turner, Chief Editor
Best Cellular Security Systems in 2025
Read about our Methodology and Testing
We only recommend security systems we’ve personally installed. Out of the 60 security systems we tested, 40 merited serious reviewing. To further narrow it down, we picked five as the best cellular security services for our readers. We then created a special set of testing criteria to rank our top picks. These were: outstanding equipment, cellular monitoring options, and affordable subscriptions with flexible payment plans. Read our complete testing methodology below.
10,000+ research hours
60+ systems tested
150+ simulated break-ins
40 systems reviewed
5 systems recommended
All of our content is written by humans, not robots. Learn More