Refurbished iPhone 11 Pro overheating and battery draining after iOS 26 update

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Refurbished iPhone 11 Pro overheating and battery draining after iOS 26 update

I just got hold of my first iPhone, it is a refurbished 11pro. As soon as I powered it on and set everything in order I decided to update it to iOS 26 before going to normal usage. The phone became so hot and the battery drained within 3 or 4 hours😳. I then recharged it from 20% to 80% and it ran out within 3 hours to 14%. Every other thing is fine. Is there anyway to try and fix it?

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Original Title: Battery draining and heating up

Posted on Sep 19, 2025 9:15 AM

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Answer 1

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Mac Jim ID

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Sep 19, 2025 9:27 AM in response to Mgimilamaganga

That is exactly what Apple says you should expect after every major software update and to a lesser extent, even point updates. You are going to need to give it at least 3 - 4 days to finish indexing files and optimizing your photo library for object detection algorithms. Leave the phone plugged in when available or not using the phone.

About Apple software updates - Apple Support

The one concern about a refurbished phone is if it was done by Apple or a third party. Check your Battery Health at Settings > Battery > Battery Health > Maximum Capacity. Third party companies can "boost" the battery readings, while Apple always uses a genuine battery replacement with every refurbished device. Since Apple no longer sells refurbished iPhone 11's, you may have an issue that is not related to iOS 26 at all and simply a problem with your battery.

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Answer 2

Sep 19, 2025 10:52 AM in response to Mac Jim ID

I suspect the reason might be with the boosted battery readings since the phone doesn’t show any history of parts replacement or service but the battery’s maximum capacity is 100%. Sounds fishy. I was given a 7 day return window and a 12 month warranty. I will have to visit the store where I bought it.

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Answer 3

Sep 21, 2025 10:19 AM in response to Mgimilamaganga

Update: The battery draining and heating up of the device seems to have resolved and the battery average use can be seen, unlike a few days ago.

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Refurbished iPhone 11 Pro overheating and battery draining after iOS 26 update

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