The iPhone 13 runs out of battery very quickly after updating to 26.3.1. what can I do?
iPhone 13, iOS 26
It is going to take 3-5days for the new software to index everything on your iPhone. This means that the battery will be working really hard and overtime during this period. The phone will likely feel warmer than normal during this period.
Things will normalize in a week or so.
Battery Drain issues are 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...
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:
The above issues span many models, and iOS updates suggest the issues reported by many are device-specific and erroneously attributed to iOS updates.
I absolutely agree with this. I literally just updated mine and the biggest issue I’m having so far is immediately overheating, battery draining and my mail is supposed to be up to date but am showing that I have 8 unread messages. I need this phone to work right as I am going to be upgrading to a new Tandem insulin pump which specifically relies on my Iphone for its usage.
CassAnneP wrote:
I absolutely agree with this. I literally just updated mine and the biggest issue I’m having so far is immediately overheating, battery draining and my mail is supposed to be up to date but am showing that I have 8 unread messages. I need this phone to work right as I am going to be upgrading to a new Tandem insulin pump which specifically relies on my Iphone for its usage.
In that case you must surely have a stand-by phone if it is life threatening condition. Get this one serviced if things don't settle.
iPhone 13 battery drains quickly after updating to 26.3.1
