iPhone 13 mini: Performance & battery issues after iOS 26

furycake wrote:

I should have mentioned that I purchased it refurbished on Back Market with a new battery inserted about 6 months ago.

Back Market doesn't sell Authentic Apple Refurbished phones. Whoever refurbished it likely didn't use an authentic Apple Battery, so there's no telling what the true battery health is on a refurbished iPhone which wasn't refurbished by Apple.

It's not always the iOS update's fault!  Many things can cause phone problems.  If you tell people you think it's an iOS update, it might make it harder to fix or find a solution for the real issue.

Remember, the right question often leads to the solution!

Was/Is your device Jailbroken? If that's the situation, please be informed that attributing the issues to iOS updates may not be accurate.

iOS updates aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. The majority of the issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.

Kindly consider checking your settings and addressing any device issues before attributing the issue to external factors. This could be a pure coincidence that the iOS update affected the iPhone functions.

Before initiating a standard iOS update, it's advisable to create a backup. Have you completed this step? If yes, proceed with the restoration from the backup.

See what each update does: OS — iOS 26, About iOS 18 Updates, About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...

Back Market does not sell Apple Certified Refurbished phones, so you really don't know what you are getting when you purchase this type of product.

The battery may or may not have been a genuine Apple battery, so that is one thing to consider. The other is whether the shop that actually refurbished the phone was actually approved by Apple to refurbish phones.

If you can provide the Model Number of your phone we might be able to learn more about the qualifications of the shop that handled the refurbishment. Post back with the Model Number if you are interested in this.

Settings > General > About > Model Number

Unfortunately, no help on this one. Normally a phone that has been refurbished by a company authorized by Apple will have a "3" as the first character in the Model Number.

The "M" indicates that the phone was sold as new, and has not been refurbished. It might be a phone that was returned by a customer for a refund or exchange.

If a new battery was installed in the phone, that information would normally appear when you tap Settings > General > Parts & Service History. If you don't see "Battery" and "Genuine" under the Service History setting, then a new Apple battery was not installed in the phone.

The battery will normally decline an average of about 1% a month over longer periods of time, but the decline is not linear. The battery might not decline at all for 2 months, then drop 2% the next month and then not drop again for another 2 months. A 2% drop after a major update would not be unusual, because all of the data on the phone must be reindexed and the battery works really hard for 4-5 days after the update.

If your iPhone is 6 months old and the battery health is displayed at 95%, that would be normal battery decline. 2 years is going to be about it for the battery in an iPhone 13 before the battery will need to be replaced.

It surely is not iOS 26.2 because...

I conducted a thorough search of this forum using the term 'battery drain after iOS update' and uncovered numerous posts detailing similar issues across various iOS updates. This suggests that iOS updates may not consistently be the root cause. Below are a handful of examples extracted from the search results:

• iPhone 14 Pro Max battery drain after iOS 17.0.1 update
• iPhone 6s battery drain after iOS update 15.7.1
• Re: Battery draining quickly on my iPhone 13 after iOS 18.5 update
• Battery Drain rate after iOS 16 update
• My iPhone 13 battery is draining fast after iOS 18.3.2 update
• Battery Draining after the ios 16.5 update
• Battery Draining after updating iOS 18.1.1
• Re: Battery drain after ios 15.6 update
• battery drain after ios 10 update
• Re: iPhone battery drain after updating to iOS 16.3

Time to get a new phone or new battery

When did you purchase your iPhone 13 Mini and from whom? iPhone 13 Mini was discontinued by Apple in 2023, almost 3 years ago now. So a Battery Health of 95% in a phone which hasn't been sold new by Apple for more than 2 years seems suspect, to be honest.

Sorry for confusion. A 2626 is a secondary number that appears when you tap on Model Number.

Tap Settings

Tap General

Tap About

Do not tap on Model Number......simply report the number that you see listed next to Model Number.