Do modern cellphones still ping towers even when "powered off"?

Strangely, my search-engine skills are not revealing this, and I do not trust LLMs on stuff like this.

If you do a normal power-off of a modern cellphone (nothing sophisticated, just what a regular user would think of as "off"), do they still ping the tower? My memory is yes, but I can't find a source for it.

This is obviously relevant for anyone going to a demonstration, etc., etc.

submitted by /u/MisterHarvest
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from hacking: security in practice https://ift.tt/Icdh9lm

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