Cellphone towers are tall structures that help transmit signals from your cellphone to other devices, allowing you to make calls, send texts, and access the internet. They act as "communication hubs" for your cellphone. Full definition
The information that law enforcement agencies can obtain from wireless carriers shows which local cellphone towers users connect to at the time they make calls. (entrepreneur.com)
3G — A wireless technology where cellphone towers create a large wireless network over huge areas (like an entire city, or large areas of a city). (dealsagar.com)
In particular, why didn't attorney Christina Gutierrez cross-examine the prosecution's expert witness about the reliability of cellphone tower evidence. (thenextweb.com)