I believe mine degrade faster, already on chat with apple support asking does any phone in your region has same degrading issue. They ask me to reset for -> restore back after backup. If still degrade >3% with 1 month need to send for change.

So here I ask to get more info, is it mine alone, or others affected too.
I try not to fret too much but if somehow my phone got battery defect and able to prove to them, maybe they aware something not right if MY phone model.
Now 98% less than 1 month use. Bought 1st day.