Hi @joe_aitken ,
I'm fairly sure that the charge port board only has to be compatible with the motherboard and not the "carrier".
Here is a link to the ifixit Samsung Galaxy S6 Edge Charging Port Daughterboard Replacement guide.
Here is a link to just one supplier of the part. It is not a recommendation to use them. It is shown, just to give an idea of the cost of the part. There are other suppliers online that may suit you better. Just search for Samsung Galaxy S6 Edge G925i Charging Port USB Dock Replacement to get results. Take note if you do this that you get the correct one for your model phone. There are a lot of different G925 variants.
Hopefully this is of some help.
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