At least in the EU apple is forced to switch to usb-c. Weather their shitty lightning through usb-c implementation will actually support data transfer on these devices - probably not because earning money through licencing lightning is too good of a deal for them - is a thing you should take up with apple.
Dream on and read the latest news about that iPhone topic.They are planning to introduce payment charges fee and verification for this special cables, so you won't be able to use your universal usb-c type cable
I'm pretty sure this won't fly at all in the EU.
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Note that I am not a fan of iPhone at all, just trying to provide evidence that billions of people wont be able to use new coldcard device without paying extra money for new cable and new batteries.
ok to play the devil's advocate - you get the usb-c cable with the coldcard. What good does it do with your lightning port iphone exactly?