Im more surprised that Hezbollah issues them. I’d thought pagers were cheap enough as consumer items that they’d just give their guy a wad of cash and say go pick up such and such pager for me.
Would have at least severely hampered any precision from man-in-the-middle attacks on supply lines such as these. Especially when being embedded within a civilian city.
Even a fire test may not produce accurate results (see C4). Better to not have distinct supply lines from the civilian population you’re already hiding in.