iPhone 12 Attachments in iMessage

[jcman01]

I will be visiting a foreign country next week, and my cell carrier says I have unlimited texting, but that any attachments sent (or received) via iMessage will count against my 5GB foreign data allowance.

Say someone sends me a text containing an attachment, and at that time I'm not on WiFi. Does the data charge happen when the text arrives, or later when I open the attachment when I can find a hotspot, such as my hotel?

Thanks for any help.

 

[Taz Mangus]

When you are on WiFi you are not using cellular data. Once the message is received the message attachment will be stored locally on your phone.