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Voice calling on a cruise ship
Can I use WiFi calling while on the ship?
That depends on the speed and quality of the WiFi Internet connection. T-Mobile’s WiFi Calling is fairly persnickety about the WiFi and Internet connection. I’d suggest having some other VoIP apps (e.g. Viber, Signal, WhatsApp) as a backup. Texts will almost certainly work. If you use WiFi calling onboard be sure to put the phone in airplane mode and turn the WiFi back on.
When I went to Alaska a few years back, I had T-Mobile service (roaming). T-Mobile brags about its roaming with GCI in Alaska.
Might be different if you’re on Prepaid.
