all the pagers that exploded were of the same model Gold Apollo AR-924 made by in Taiwan Apollo Electronics.
More than likely we are looking at 2 possible scenarios:
1 - Mossad intercepted the pagers before delivery since the explosions happened only in key local areas in the Danieh suburbs, Sidon, Tyre and in the cities of Ali Al-Nahiri and Riyaq in central Beqaa valley
2 - Or if these pagers are all of similar derial/batch numbers the explosives were inserted in Taiwan making this another step towards WW3.