Nextel Sonido -

: Following the Sprint-Nextel merger in 2005, the aging iDEN network faced interference issues (often referred to as "rebanding") and was eventually decommissioned in 2013 to make way for LTE.

: The "chirp" created a unique social etiquette; "bleeping" someone was faster than a T9 text and more immediate than a phone call. Decline and Legacy NEXTEL SONIDO

: The sound was a byproduct of Motorola's Integrated Digital Enhanced Network (iDEN) technology, which combined digital cellular, two-way radio, and alphanumeric paging into a single device. : Following the Sprint-Nextel merger in 2005, the