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Who still uses pagers?
(www.voanews.com)
This is a most excellent place for technology news and articles.
Multiple news articles are saying this was a production level attack, on devices that were specifically ordered by Hesbollah.
https://www.rnz.co.nz/news/world/528326/israel-planted-explosives-in-hezbollah-s-taiwan-made-pagers-sources-say