Qrcode iphone special charactere

I’m using quickchart.io to build a vCard QR code.
It works fine, but on iPhone, the character ï shows up as ‘√ø’.
I tried using EncodeUrl(text), and the text becomes ‘%C3%AF’, which appears correctly as ï’ on my Android device, but on iPhone, I still see ‘√ø’.
How can I ensure that the text appears the same on every smartphone?

juste add CHARSET=UTF-8 and its work on iphone and android

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