“People who use public phone boxes are either buying drugs or having an affair”

There aren’t many public phone boxes still around; people usually carry a mobile phone—or two. “Fact: People who use public phone boxes are either buying drugs or having an affair” was posted on Twitter on December 19, 2009.
 
The saying has been varied slightly to describe someone with two mobile phones. “I generally think people with two phone are either having an affair or selling drugs?” was posted on Twitter on February 16, 2012. “An old joke holds that anyone with two mobile phones is either dealing drugs or having an affair” was printed in Macworld in 2017.
 
   
Twitter
David Wellbelove‏
@DW_Images
RT @nessie111: Fact : People who use public
phone boxes are either buying
drugs or having an affair
11:46 AM - 19 Dec 2009
 
Twitter
Tim O’Neill‏
@dezignguy
Fact : People who use public phone boxes are either buying drugs or having an affair
12:31 AM - 24 Sep 2011
 
Twitter
Anthony Hamilton‏
@1974Hamilton
#FactsWithoutWikipedia   People who use public phone boxes are either buying drugs or having an affair
4:24 AM - 18 Jan 2012
 
Twitter
Mr Squeaky Clean‏
@Mr_S_Clean
Replying to @jaya_malhotra
@jaya_malhotra I generally think people with two phone are either having an affair or selling drugs?
2:20 PM - 16 Feb 2012
 
Twitter
Sophey Jeffs‏
@SopheyJeffs
‘I have a second phone’ ‘oh so you’re either having an affair or selling drugs’
4:27 AM - 21 Nov 2012
 
Twitter
Jane‏
@JaneyyJanerson
Appaz people with 2 phones are either having an affair or dealing drugs. I currently find myself in the 2 phone sitch, and I’m not liking it
4:41 PM - 7 Jan 2013
 
Twitter
Chris Baker‏
@Chris_CLBaker
Replying to @nickatkin_hht
@nickatkin_hht @NHConsortium Ahhh….me double phone man (no I am not having an affair or dealing drugs) #nhcdigi14
3:56 AM - 13 Mar 2014
 
MikeWorth.com
CIO Quote of the Month…
9 Dec 2015
(...)
“You only have two phones if you are a drug dealer, having an affair, or are a lawyer. A lot of our partners have two phones.”
…CIO of global law firm on the continuing BlackBerry/iPhone duplication.
https://www.legaltechnology.com/latest-news/the-december-issue-of-the-legal-it-insider-newsletter-is-out-now-read-it-here-free/
   
Macworld
How to use two numbers on an iPhone
Don’t get two phones - here’s how to use two numbers on the same iPhone
by David Price | May 10, 2017
An old joke holds that anyone with two mobile phones is either dealing drugs or having an affair - but in fact, there are plenty of legitimate reasons why you’d want to maintain two separate numbers.