Iphone 13 become hot after updated ion 27

The first step is to know what your Battery Health percentage is by going to Settings > Battery > Battery Health. If it is below 80%, it needs to be replaced and that would have been true before the iOS 27 update, but ignoring that Service message on your Battery in Settings is not going to result in better experience following the update. Battery replacements should only be performed by Apple or Authorized Apple Service Provider as third party batteries will likely experience performance issues.

It would not be unusual for an iPhone 13 to have needed a battery replacement by now. It was only expected to last 500 charge cycles, while newer devices have an expected range of 1000 charge cycles.

With a good battery above 80% Battery Health, it is normal to experience increased heat, battery drain, and even some UI lag for about a week following an update. This is due to the Spotlight indexing being performed and if you are not leaving your device plugged into power and connected to WiFi overnight, it may take longer for it to complete. Apple provides this Support Article for what to expect immediately following any Software Update.

About Apple software updates - Apple Support

With a bad battery, the increased demand indexing these files on an already failing battery will only make that heat, drain, and UI lag worse.

Welcome and thank you for reaching out. 🤗

It is normal for an iPhone to run warmer than usual for a day or two after a major iOS update due to background processes like indexing.

However, if the issue persists, there are several steps you can take to resolve it:

• Wait it out — Background tasks like photo indexing and data syncing can cause the phone to heat up temporarily after an update.
• Update your apps — Third-party apps may need updates to run efficiently on the new iOS version. Check the App Store for any available updates.
• Check your charger — Using a high-wattage charger can cause the phone to heat up. Try using a standard 20W charger or a different power source.
• Remove the case — Some cases can trap heat and prevent the phone from cooling down properly.
• Enable Low Power Mode — This reduces background activity and can help lower the phone's temperature.

If your iPhone continues to overheat, you may want to contact Apple Support for further assistance.

Good Luck! 👋🏼😉

Smiliñ 😎 Brian | Community Volunteer

khamim wrote:

My iphone 13 updated to ios 27, after updated my iphone become very hot quickly. Anyone have the same problem? how to fix this issue?

iOS 27 is a BIG update and immediately after the update and for a few days, your phone is working hard to reindex the millions upon millions of bytes of data on your phone, while at the same time you're still using the phone as you normally would. When a phone is working hard it pushed the battery and when a battery is pushed it generates heat.

You also own an iPhone which could be at least 5 years old. Have you had the battery replaced in your phone since you bought it? Batteries should be replaced when Battery Health dips to 80% or lower and a failing battery causes a phone to get hot faster.

What is the Battery Health in your phone? Open Settings > battery > Battery Health - if it is 80% or lower, you need to pay Apple to replace the battery at your earliest convenience.

Apple Service and Repair for iPhone Battery - Apple Support