When the ship is sailing on international waters, you will be able to use the WMS network for incoming and outgoing calls, SMS, and Data services (email and web surfing). Once in port, you can connect to local roaming networks as permitted by your home carrier.

In 2026, you will have cell service during a Mexico cruise, but its availability and cost vary wildly depending on your location. While the ship is at sea, your phone will likely connect to a satellite-based network often labeled "Cellular at Sea." This service is notoriously expensive, with roaming rates that can reach several dollars per minute or megabyte. To avoid "bill shock," most 2026 travelers keep their phones in Airplane Mode and use the ship’s Wi-Fi (like Royal Caribbean's VOOM) for internet-based calling. However, once you are in port (such as Cozumel, Costa Maya, or Ensenada), your standard roaming plan takes over. Many major U.S. carriers, including AT&T, T-Mobile, and Verizon, now include unlimited talk, text, and data in Mexico as a standard feature in their premium 2026 plans. If your plan doesn't include it, you can usually purchase a "TravelPass" or "International Day Pass" for around $10–$20 per day to use your phone just as you would at home while on Mexican soil.