Chosen Solution
I have a similar issue, bought am LTE GS6 direct from Samsung (Model number SM-G925W8, Carrier: Bell Canada) and I desperately need to replace the USB Daughter Board and maybe the battery. the cost is more than reasonable and I’m more than willing to do it myself, but I’m having issues figuring out if the parts on ifixit.com are compatible. Any suggestions?
The battery is compatible, the charger port is but hopefully you won’t have reception issues on that, I cannot confirm whether you will have or not.