How to fix apps crashing on iPhone after iOS 26.4.1 update?

That will occur frequently for users where the Battery Health of the device has dropped below 80%. What is your Battery Health percentage at Settings > Battery > Battery Health?

The iPhone 11 would most certainly have needed the Battery replaced by now, and if that was done at a third party shop, then the battery is not capable of providing enough power to function properly. Have you had the battery replaced or purchased a used device where you are unsure of it's history?

Firedfornocallnoshow wrote:

My battery life was above 80% before the update, and then it suddenly changed to 77%, and they blame my battery? It’s universal forced to buy a battery or upgrade.

Your battery was failing before the update. It's now below the threshold where the battery really needs to be replaced. Even if you didn't update your phone, your batteries health would continue to drop. That's what batteries do and with every full cycle charge, they lose capacity. Suggesting this is a conspiracy to make you upgrade or have the battery replaced is utter nonsense.

auie-16 wrote:

I’m sorry for a bit of confusion! But regarding to this issue I’m experiencing it on my iPhone 13 it has 93% battery health and hasn’t been battery replaced

It would even be unusual for an iPhone 13 to be showing 93% on an original battery. The phone was only designed for 500 charge cycles where on average the health drops about 1% per month. It is not a linear drop, just what has been seen on average. Did you purchase it from Apple and if so, when? Apple discontinued the phone in 2024 and there are many other sites where it could be purchased as refurbished and not have an Apple battery. What you describe certainly sounds like an issue where the battery cannot meet the demand.

When was the last time that you replaced the battery in your iPhone 11?

auie-16 wrote:

Currently, in IOS 26.4.1 ....

It wouldn't hurt to update to iOS 26.4.2

Do you have a VPN or any type of virus protection or cleaner installed?

Drops in battery health are no linear. It can hold steady for many months, then drop multiple points at once or in quick succession.

In addition, the algorithms used to determine the battery health improve with each new release.

It is not a conspiracy to force you to buy a new battery or upgrade your phone.

The iPhone 13 was discontinued in September of 2024. It's extremely unlikely that one would still have 93% battery health after so long.

Exactly where and when did you purchase it?

I have a SE 2020 whose battery just reached 80% health and it happily working with 26.4.2. So this is not a universal issue.

My SE was at Battery Health 82% and then dropped to 77% after the update, and support just blames my battery being below 80% for the apps crashing. Hey, they weren’t crashing until I updated folks.

My battery life was above 80% before the update, and then it suddenly changed to 77%, and they blame my battery? It’s universal forced to buy a battery or upgrade.