Smartphones have turn into an indispensable a part of worldwide journey. You need to use them to verify in on the gate, cross borders, discover your manner round a overseas metropolis, and pay for breakfast at a espresso store. Now it is simpler than ever to make use of your telephone such as you would at dwelling with out affecting your pockets. (Weston Wei/The New York Occasions) — FOR EDITORIAL USE ONLY WITH NYT TRAVEL SMARTPHONES STORY SLUGGED BY STEVEN MOITY FOR JANUARY 1. DECEMBER 6, 2024. ALL OTHER USES PROHIBITED —