pagers, radios, and solar generators
What do these all have in common? Batteries.
These days, almost all of them rechargeable batteries.
Since I’m a fan of conspiracy theories (and also a huge skeptic of them, but it’s still fun to posit ideas), what if these devices aren’t actually being pre-loaded with explosives, but instead mossad or whomever have developed something like a microwave emitter that causes lithium batteries to exploded?