It's no accident that Apple chose a yellow icon for its walkie-talkie feature. I dug out my old (2002ish) Nextel with PTT (push to talk). It was all the rage back then... :
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TOAN MAGAZINE — Throwback Thursday: Nextel/Boost Mobile Chirp...
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Two new cellular phones built for abuse
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Amazon.com: Motorola Nextel i365 Walkie Talkie Rugged Cell Phone : Electronics
Throwback Tech: Old school cell phones - Electronic Products
Motorola i530 Specs, Features (Phone Scoop)
Nextel Mobile | StartEngine
Throwback Nextel! | Best mobile phone, Best mobile, Phone
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Remember these weird cell phones from 2005 that were also walkie talkies? Super annoying. : r/nostalgia
Cell Phones & Beepers
Motorola's Ruggedised Phone
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When Phones Were Fun: NEXTEL - YouTube
Motorola i700 (Nextel) review: Motorola i700 (Nextel) - CNET
