[NOT FIXED YET] Performance drop on iPhone 13 iOS 26

Hello~ What’s your current battery health? in Settings > Battery > Battery Health & Charging. If 80% or below …you need a new battery.

Genius Bar Reservation and Apple Support Options

~Katana-San~

When was the last time that you replaced the battery in your iPhone 13?

It's on 93%

That is amazing. So much so, that I doubt that this reading is correct.

Average battery life for the iPhone 13 was about two to two and a half years. Another way to say the same thing is that the battery normally declines on average at about 1% a month.

The iPhone 13 was introduced in September 2021 and discontinued in September 2024, so the battery is at least 18 months old and as much as three plus years old depending on when you purchased the phone.

Even if you got one of the last iPhone 13's off the line, I would expect the Battery Health to be in the 85% range at this time, likely lower.

Even then, the iPhone should not be crashing or overheating. No "do-it-yourself" fixes here.Make an appointment at the Apple Store / Genius Bar or take the phone to an authorized Apple service shop to get the iPhone checked and tested.

You can find a list of authorized shops in your area using this link: https://locate.apple.com/

Please report on your results.

Assuming that the shop is an authorized Apple service location, they can run checks and tests on the battery. That information might be useful to you.

As far as an "old" device, I'm still using an iPhone 11 Pro and It runs just fine on iOS 26.....the same as it did on iOS 18.

SomethingWrongforsure wrote:

93%

Hello ~ Did you purchase it new from Apple? If so take the advice of Bob Timmons* and have it checked by Apple.

~Katana-San~

What did the shop say when you took the phone in to be checked and tested?