Battery life

Superflip53 Said:

“Battery life: Why do the new iPhones have such poor battery life. Makes me think of switching to a different phone company.“

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Give Apple Feedback:

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.

1. Go Here: Feedback - iPhone - Apple
2. Select: "Performance" for the "Feedback Type"
3. Comment: that this all pertains to new iPhones. Include the URL of this post
4. Proceed from there as necessary

Turn on Low power mode

Low the brightness

Turn on battery optimization

And uninstall any type of apps that stay on 24/7