Cops pinched a Bronx man yesterday after he allegedly ripped off an Upper East Side woman’s bag — which held an iPhone that led them to an easy arrest.

The victim, 22, was at Lexington Avenue and 72nd Street at 5 a.m. when Alexander Paige, 32, allegedly shoved her to the ground and snatched her bag.

Officer Willie Matos used the Find My iPhone app in his own iPhone to track down Paige a few blocks away.