Walkie talkie Nextel cellphones... there's an entire generation that doesn't know about these lol : r/nostalgia
That annoyed BEEP BEEP from NEXTEL phones in the 90s (sound in comments) : r/nostalgia
Nextel i880 - Review 2007 - PCMag UK
Nextel Mobile | StartEngine
COLLECTIBLE Motorola i730 Nextel Flip Phone & Walkie Talkie Gray BUNDLE WORKING | eBay
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... :
Motorola Nextel i355 Direct Talk - Walkie Talkie PTT | eBay