THE NEXT TIME you’re on indefinite hold for customer service, use the new Hold Assist feature on your iPhone. It notifies you when a person comes on the line, otherwise freeing you to go about your day. When on such a call, tap More, then Hold Assist. Or for automatic detection, go to Settings, then Apps, then Phone, then Hold Assist Detection. Toggle the switch on. This is similar to a feature on Google Pixel phones called Hold for Me. In the Phone app, tap More, then Settings, then Hold for Me. Toggle the switch on. —E.C.B.