iPhone 16 Pro battery draining faster post iOS 18.4.1 update

After an update, your iPhone must work extra hard to run additional background tasks. Some of these include indexing which is creating and sorting a searchable database of your data on the new software. Also fully installing and moving new features to the right places. Which you can experience an increased battery drain. When the tasks are fully complete, which usually takes a few days to a week, your iPhone will return to normal conditions.

You should also read my User Tip which further explains this in detail:

Addressing the Common Increased Battery D… - Apple Community

"iPhone 16 Pro battery draining fater post iOS 18.4.1 update: Since I updated to iOS 18.4.1 my battery on my IPhone 16 pro drains while looking at it. I have to charge 3 times a day since last Friday. Anyone else having that issue? How do I avoid this?"

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Troubleshooting Slow iPhone Draining 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..  

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. Go Here: iPhone Battery and Performance - Apple Support - Scroll down to "Your battery's maximum capacity"

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

Report this to Apple:

Do your Part: It is important that you provide feedback on this occurrence to Apple.  Apple won't get back to you directly, but the more feedback they receive on this, the more they will know what is going on, and what needs to be fixed.

1. Go Here: Feedback - iPhone - Apple
2. Select: "Bug Report" for the "Feedback Type"
3. Comment: that this all occurred after installing this update, and how you have troubleshot it thus far. Include the URL of this thread.
4. Proceed from there as necessary

"How has it been so far close to one week? Are you still experiencing the battery drain?"

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Having this issue? Troubleshoot it, and report it as a bug.

How has it been so far close to one week? Are you still experiencing the battery drain?