So I just bought an iPhone SE in an unofficial store (new packaging and everything, warranty, etc.). The only problem with the phone is, the battery life seems super short to me. In settings -> battery -> battery health it says 100% capacity. But could somebody have taken out the new battery out of the phone and replaced it with an old one before packaging, and for some reason the phone still thinks the battery is at 100% health?
How can I make sure the battery is indeed old before I go to an official store and tell them to replace my phone? What ways are there to check the capacity?
P.S. a rip-off like this maybe couldn't happen in America, but I don't live in America so this is possible, in my opinion.
And yes, I have closed apps and tried different ways of minimizing battery consumption, yet the battery life still seems to me way too short for a new phone.