I commend and salute u for tracking this.

Mine shows date of delivery and the time I “activated” it. I remember someone said warranty starts once you activate it. Never tried before, who doesn’t turn on your new toy once you get it?

To double confirm, You can check in General Settings About

Didn't change for 12PM, but an old Iphone 6, iPhonx XS Max. I tried Machines, QCD (Berjaya), MacCity 1U, ITWorld. (it's either iPad or iPhone, MacBook service).

So far ITWorld the best experience, neat work in putting on back the glue and etc. Cleaning your phone before passing back to you. Same day replacement.
https://www.itworld.com.my/iPhone-Battery-R...acement-Program

I always say ITWorld is still "relatively unknown", even for new iPhone preorders. and they are like Machines when the early days.

Absolutely avoid MacCity. Crap service.

Machines too many people, QCD Berjaya, it's okay but i feel too much grandfather story and comparing to ITworld, bit slow.