Unimobile 

A Unimobile is a marked patrol squad car driven by a uniformed officer, otherwise known as a silver badged Uni.

The stupid popo's unimobile is blocking traffic and is going to make me late for my parole hearing

Unimobile by legendary gold September 20, 2015

Umobile 

The worst, i mean the worst mobile service provider i've ever encountered in my entire life

They're basically the dictionary definition of "no service" on cellphones

Dude 1: Man, my game kept lagging man. The service here sucks balls
Dude 2: Looks like a umobile situation
Dude 1: *wide-eyed
Dude 1: *whispering how do you know i was using umobile?
Dude 2: heh.

Umobile by JackAssSwipe November 18, 2019

unimailer 

someone who replies to e-mail with one-word responses.

Emails that are just
Right.
Good.
Thanks.
Yes.
OK.
Unimailers suck.

unimailer by Finelyspun September 20, 2006