[epc]

In 2001 the US was at about 45 cell phones per 100 adults according to the ITU and statista.com (which may be the same dataset). Some other sites put it at 38% but unclear if total population or just US adults.

Regardless, hardly ubiquitous.

[Markoff]

according this roughly 50% of European population had phone including seniors and children, so it pretty much confirms what I said that all adults except old people had phone including plenty of teenagers, Americas way behind Europe, but I guess US avg would be much higher than South America

https://www.researchgate.net/figure/Regional-and-global-cell...