iPhone Slowing Down Before New iPhone Release

I know that there was a settled class action in/around 2020 over Apple intentionally slowing down phones.

I have a 15 Pro Max and recently noticed that it’s slowing down like crazy with no material change in the way I use it. Before this, I could easily get through the day without having to recharge. Within the last few weeks, I’ve been struggling to get through the day without a recharge.

Maybe I got a bad update? If so, how can I fix it? Any other recommendations?

Thanks!

What does your battery health say in settings? Might be worth having Apple run remote diagnostics on it.

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Battery health - Normal
Max Capacity - 88%
Cycle Count -324

That’s an excessive amount of wear to be at 88% on a 1 year old phone, but a cycle count of 324 in about a year (assuming you bought it about when it came out) is significant as it’s the equivalent 324 time you’ve used and recharged 100% of the available battery life.

If you only used 50% every day, a year of use would be approx 180 battery cycles.

I’d be taking the phone into the Apple Store though and get them to check it out.

On my iphone 12 Pro, battery health was down to 92% in less than a year, and they replaced it after checking I wasn’t using the phone excessively.

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Actually 88% is the established norm for any phone after iPhone 12. Most people have that level degradation except for those who set their charging limit to 80%.

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Apple slowed down the iPhone to preserve battery life.

Is your iPhone slower (title) or having degraded battery life (post contents)?

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I never had such significant battery degradation after one year. My iPhone 15 Pro Max right now:

Battery health - Normal
Max Capacity - 100%
Cycle Count - 213

I don’t use the 80% max charge setting. The iPhone gets its charge daily during the night between 3:30 and 6:30 am via the Belkin Boost Charge Pro 3-in-1 Wireless Charger (the charger is sitting behind a smart plug that turns the power on and off at the times mentioned above).

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That doesn’t seem right. I have an iPhone 13 Pro Max and I still have 87% capacity.

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Here’s my 15 Pro Max

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Thanks, everyone. I think I have a call to Apple coming soon!

Not sure if I need to change my charging habits or not.

Here’s what I’ve been doing for a year since I got my phone new from Apple - I charge my phone every night on some Anker 3-in-one charger. During the day, I don’t charge my phone unless I’m in my car where I mount it to a MagSafe mount that charges the phone. The Charge Limit within settings of the iPhone is at 100%.

Outside of this, I only charge if my phone gets to 20% or lower (every few days in the last few weeks).

Should I change my charging routine?

Thanks!

Apologies - the speed of the phone processing is still good but the battery life has taken a turn for the worse.

There’s no such thing as an accepted norm, it all depends how much you use it and how you charge it.

Chi charging, Magsafe, high wattage wired chargers and slower wired chargers all affect the battery in different ways. Phones kept at 100% or 10% for excessive amounts of time will degrade far more quickly because of how Lithium Ion batteries work.

Apple expects a battery under normal use (500 charge cycles iphone 14 or earlier, 1000 charge cycles iphone 15 or newer) to be above 80% after 2 years, so if you’re around 500 charge charge cycles on an iphone 15 (i.e. on average using under 137% of battery life a day) and are at 90% or below for maximum battery capacity it suggests your battery is degrading more quickly than normal.

If my phone had 88% after 12 months on my usage, i’d be taking it into the Apple Store,

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It seems like my iPhone 15 Pro battery is possibly not as healthy as it could be:

Battery health - Normal
Max Capacity - 93%
Cycle Count - 338

I wonder if this is because I use CarPlay almost every time I drive, even for short trips, which requires a USB cable, which means that it charges.

I’m going to set it at charging to 80% maximum & see how things change. And maybe I should look for a usb-A to -C cable that is data-only? I don’t know how easy that will be, since it was already difficult to find my current high-quality short cable.

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Setting it to the 80% limit will definitely reduce battery degradation over time. Even set to 80%, my 15 Pro Max has better battery life than my previous phones, and I can temporarily switch it to 100% if I expect to need it on a particular day.

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That’s one of the reasons I use the 80% limit. If you use that, you shouldn’t need a data-only cable, and you’ll still get charging when you do need it.

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Hi All, wanted to update this thread - I brought in my phone to an Apple Store. Apple wouldn’t replace the battery the battery health was above 79%. We wiped my phone and reinstalled everything from scratch. A super pain in the @$$ but I was able to figure out the battery usage was from the SiriusXM app. It’s one of my most used apps but it is also the worst app I use as it constantly crashes and, well now I’ve realized, sucks the life out of my iPhone battery.

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