Has anyone has this problem out of country with iPhone?

So I'm in Mexico and turned on airplane mode and turned off cellular data.

I'm using Wi-Fi currently.

Has anyone done the same and came home to being charged for using data? I wanna know so I can stop now.

If your on airplane you shouldent be charged.

Wi-Fi is free, you can also send imessages and facetime free over Wi-Fi even internationally

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