One member of the Iranian-backed terror group received a new Gold Apollo pager on Monday that exploded the next day while it was still in its box, sources told Reuters.

Lebanon's Hezbollah was still handing its members new Gold Apollo branded pagers hours before thousands blew up this week, two security sources said, indicating the group was confident the devices were safe despite an ongoing sweep of electronic kit to identify threats.

Hezbollah turned to low-tech pagers to avoid cellphone tracking by Israeli intelligence. Who else uses pagers, and why?

By shifting to relatively low-tech communication devices, including pagers and walkie-talkies, Hezbollah apparently sought an advantage against Israel's well-known sophistication in tracking targets through their phones.