Not really. These were almost certainly tiny shaped RDX charges. Pretty sure that stuff isn't in your everyday cellphone/smartphone. Israel must've identified and infiltrated the supply chain used by Hezbollah.
The explosive material was allegedly placed inside the pagers’ batteries and detonated by an external command that caused the batteries’ temperatures to overheat and trigger the explosion, the sources added.
Yeah, you're right. I read that article too quickly. Thought it said they just did something with malware to trigger the battery to explode.
Even if they did do that, afaik batteries can't fail like that, especially little ones in pagers. If anything they'd just burst into flames and people would get a few burns