Why isn't my iPhone battery showing maximum capacity?
Why isnt my iphone showing maximum capacity?
[Re-Titled by Moderator]
Why isnt my iphone showing maximum capacity?
[Re-Titled by Moderator]
Unless it's totally new, it will not be 100%.
If it's below 80%, make a genius bar appointment with Apple for an evaluation.
They have diagnostic tools and can tell you what options you have.
Battery health is shown only on iPhone 6 or later.
Regards
Giulio
Why isn't my iPhone battery showing maximum capacity?