Chosen Solution

Got a customer after a Apple Watch 3 Cellular + GPS AMOLED replacement. Is it still the case that it breaks future pairing and apple pay or were these issues ever resolved with OEM screens and or watchOS 5 / iOS12?

Review this guide Install Series 2 Display on a Series 3 with Apple Pay You need to transfer the NFC module over to the new display. You can’t reprogram it.