I wonder after the battery replacement, do they put back the water proof seals.
Anyone tested their iphone water proof is still good after came back from battery change?

Your replacement iphone X looks prestine on the outside but inside are not properly restored.
Even with a dead pixel on the screen, they are prepared to give it to the customer.
I thought their replacement units are all tested thoroughly in the workshop before approved to be sent out.

I hope you can get another replacement unit.
Complain to Apple that the replacement unit has so many flaws.

I guess everyone thought going back to Authorised Service Center for repairs will be done properly with water proof seal installed.
That means all those who sent in their iphones for cheap battery replacement will have their iphones returned without water proof seal.

If that is the case, better keep my iphone in "factory assembled" state.

So, telling people that you have changed your iphone battery at Authorised Service Center means your iphone has no water proof seal.