iOS 18.4 overheating, background app closure and excessive saturation issues

After an update, your iPhone has to complete many additional background tasks. Mainly indexing where your millions of bytes of data are being sorted. During this period you can see some abnormal activities on your iPhone. As such, you should perform a Forced Restart, just as you should after every update. If the activities still occur, they may go away after the update tasks, which usually take a few days.

• Press and quickly release Volume Up Button
• Press and quickly release the Volume Down Button
• Press and hold the Side Button until you see the Apple Logo

"iOS 18.4 overheating, background app closure and excessive saturation issues: iOS 18.4 suffers from severe overheating, forced closure of background apps, and issues with excessive saturation in background applications."

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Troubleshooting Overheating iPhone After an Update:

The iPhone battery will not charge, unless it is plugged in and charging. With lots installed, the charge would be slower. It would also depend on the battery health and how you are suing heal it is charging..  Go Here: iPhone Battery and Performance - Apple Support - Scroll down to "Your battery's maximum capacity"

View the Battery Health:

Apple recommends you get a new battery, once the Battery Health reaches 80% or lower. When the Battery Health is 80% or lower, it is time for a new battery.

1. Go To: Settings
2. Tap: Battery
3. Tap: Battery Health
4. View: [the percentage]
5. Is it 80% or less?  If so, it is time for a new battery.

Troubleshooting the Battery:

• iPhone Battery and Performance - Apple Support

• Charge and Monitor the iPhone Battery - Apple Support

• About the Battery Usage on your iPhone - Apple Support

• About Optimized Battery Charging on your iPhone - Apple Support

• If you see "Your iPhone Battery may Need to be Serviced" - Apple Support

• Use Low Power Mode to Save Battery Life on your iPhone - Apple Support

"iOS 18.4 overheating, background app closure and excessive saturation issues: iOS 18.4 suffers from severe overheating, forced closure of background apps, and issues with excessive saturation in background applications."

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Troubleshooting Overheating iPhone After an Update:

Report this to Apple:

Do your Part: Provide Apple with feedback on this, letting them know about this issue.  Apple may not get back to you directly, but the more feedback they receive on this, the more they will know what is occurring, and what bug fixes to include in updates to come. Apple will know nothing of your occurrence, if you don't report it to them.

1. Go Here: Feedback - iPhone - Apple
2. Select: "Bug Report" for the "Feedback Type"
3. Comment: that this all began after installing an update. Include the URL of this post
4. Proceed from there as necessary