>I doubt any phone battery is lasting 5+ years.
Just coming up to five years on mine and it is still at 87% capacity.
My iPhone 14 Pro is almost 4 years old and at 65% capacity. I don't know how everyone else is (not) using their phones.
iPhone 11 coming up on 7 years old in December, still at ~85% capacity.
Really it mostly depends on how heavily you use it, and maybe to a lesser extent charging habits (charging slowly, not charging to 100%, etc).
I have an iphone 13mini at 5 years and 81% capacity.
That is genuinely shocking to hear. You have to be like 3+ sd above the mean. Do you know how many charge cycles you have? I recall that most batteries need replacing after 300-500 cycles.