Is it apple asia policy to intentionally not properly sealed a serviced iphone after battery replacement?
Evidently the poor Apple support servicing allows moisture to build up and damaged the display screen and causing rust to steel components inside the iPhone, creating a facade and impression that the customers has damage the iPhone, thus required the customer to pay extra for a refurbished iPhone.
Also there was no communication of IP67 recertification or failure of IP67 protection after Apple support servicing?
About splash, water, and dust resistance of iPhone 7 and later - Apple Support (SG)
https://www.cnet.com/tech/mobile/apple-iphone-11-and-pro-water-resistant-waterproof-testing-resilts/