We highly recommend activating your WestESIM prior to your arrival in the USA, ideally before your flight departs. Having an active internet connection immediately upon landing can significantly streamline your entry process. You can communicate with family, access critical travel information, or utilize apps like Mobile Passport Control (MPC) to potentially expedite your clearance through US Customs and Border Protection (CBP), saving valuable time and reducing stress.
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Should I activate my WestESIM before clearing US Customs and Border Protection?
Updated April 22, 2026
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