'Tis the season for holiday parties and festivities, but a lost iPhone can quickly spoil the joyous cheer and vibe fast. Whether misplaced or stolen, modern iPhones have powerful features to help.

The few times I've briefly misplaced my phone have led to heart-pounding moments of panic. Rightfully so, as this tiny device is what I use to access my email, bank accounts, calendars, to-do lists, ...