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Cellular networks
provide connectivity for mobile devices like cell phones by dividing geographic areas into “cells” with tower coverage allowing wireless communications between devices and towers or cell sites
Bluetooth security mode 1
no security (non-secure)
Bluetooth security mode 2
service-level enforced security
Bluetooth security mode 3
link-level enforced security
Bluetooth security mode 4
standard pairing with Security Simple Pairing (SSP)