Apple really won’t fix the battery now yes.. not 100% on anything else.

It has happened when it's been plugged to my car via USB, while using music / Whatsapp / Instagram

4 years working at apple as a Mac tech, thousands of appointments, I know what I’m talking about.

Your difficulty in understanding what I’ve been saying (that the battery percentage and message are related but not mutually exclusive) does not mean I’m wrong. Thank you though

We can read

Which apps specifically makes yours warm/heat up? For me, Youtube & Reddit does not heat up at all surprisingly. Whereas instagram, facebook, business suite apps makes it warm to the touch.

Dfu did not work in your case? I was considering a dfu restore.

It literally tells you in the picture you posted…

Get your battery replaced at local phone repair shop. Cost 60 bucks.

Don’t worry, your not missing out on much. It’s not very well implemented

Seeing as it says it's the battery and explains exactly what the problem is, I'm going to assume it's a WiFi issue.

JFC, how do these people dress themselves in the morning.

You're wrong. These shouldn't occur at 80%. Apple recommends replacement at 80%, that doesn't mean the battery is unable to provide the necessary amperage at 80%.

You are doubling down because you don't want to be wrong, it's okay to be wrong.

I think the battery was unable to deliver the necessary peak power.

Never had a phone pull performance at 85%. At 73% was my personal experience but aside from that? Nope. I can maybe see that happening on the SE 1st gen with its tiny battery though.

Your battery is old as hell lol it’s time to replace your phone battery.

Again no. I said that generally these messages start appearing at/below 80%. The alternative, seeing this message above 80% is indicative of an unexpected hardware failure. In OP’s case, that distinction would be important in how serious to take this message.

There are numerous ways to emulate it. Here's one i liked to use: https://youtu.be/j7sr5XdvB0U

Is your phone really cold? This can reduce a battery's ability to deliver power or for the charger to work.

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Your battery is old and worn out. iOS is throttling performance to maintain stability. If they didn’t do that, your phone would be shutting down randomly. Get a new battery.

Read the picture you posted

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Check your battery health

To be fair this isn’t technology skills, it’s reading comprehension.

Use Coconut Battery on a Mac to check the actual battery life, then you can decide if replacing it now or later.

> asking the customer to read the full message on the screen/ screen sharing and reading it for them.

Makes sense due to roughly 2/3 of the population having poor to zero technology skills

What does this message say?

I'm pretty sure it says that performance was affected. Thus, you are arguing with yourself. You are saying Apple gives these messages when the phones performance is affected by decreased battery capacity at 80%, yet that battery capacity isn't affected until less than 80%.