iPhone 6S slow and low benchmark scores.

My 6s had the battery at 81% of its original capacity and had very low geekbench 3 scores (I use geekbench 3 cause it s faster). Below 30%, the clock speed would go to even 900 mhz. I changed the battery and now my 6s scores 4500 in multiscore with 5%.

At the risk of being censored (again) -- I replaced the battery myself in three difference iPhones, all came back to full Geekbench speed. That was back in April, after I first posted the explanation for this whole mess, and they have been running fine since.

Sorry to hear about your example, the only explanation I can offer is that perhaps the new battery already has such poor capacity that iOS figures it best slow it down. A new battery can end up with a poor capacity ("wear level") just from being stored a long time with a very low voltage.

I had sent a fairly comprehensive reply but it seems to have disappeared!

Anyway here is a summary:

1. Apple will not touch an iPhone that has a third party battery fitted.

2. If you want an Apple Store to replace the battery you had better make sure that your iPhone has a genuine Apple battery, so put your old battery back in before you visit the shop.

3. The only guaranteed way to get the CPU back up to speed (1400 MHz) is to have a genuine Apple battery fitted. You might get lucky with a third party unit, but it’s not worth the risk, now that you can get it done for £25.

Hope this helps.

It is great to finally read Apple's official apology, https://www.apple.com/iphone-battery-and-performance/, for this iPhone slowdown fiasco.

DodgyTactics wrote:

I had sent a fairly comprehensive reply but it seems to have disappeared!

Anyway here is a summary:

1. Apple will not touch an iPhone that has a third party battery fitted.

2. If you want an Apple Store to replace the battery you had better make sure that your iPhone has a genuine Apple battery, so put your old battery back in before you visit the shop.

3. The only guaranteed way to get the CPU back up to speed (1400 MHz) is to have a genuine Apple battery fitted. You might get lucky with a third party unit, but it’s not worth the risk, now that you can get it done for £25.

Hope this helps.

I'm not sure why you're replying to me. I would never have had a third party replace my battery even if I did have this issue. I also pointed out, in the post you're replying to that opening the phone would most likely render the phone unserviceable by Apple. However, I would still suggest asking.

Apple now also admits to this questionable practice:

https://www.cnet.com/news/apple-slows-down-older-iphone-battery-issues/

I claim the practice is questionable, because Apple has kept it hidden until now. In my humble opinion, it should have been a visible user settable option, similar to the Low Power option. It's fine that Apple would then default to try to prevent shutdowns by slowing down older phones, but users should be able to set it back to the speed they paid for, when the device was purchased.

tried to connect another battery (AAA copy)

that's not helped, I opened cpu dasherX and there was 400hz ...

I 've said exactly the same thing and they deleted my post because they say it was speculative. Since when if you say the truth its speculation. All users and geekbench with used battery confirm it.Why yet Apple haven't say a word? My phone works on 600mhz cpu and when its on charge 837-1227. After the update 10.2.1 our phones are useless. I m just discussing my experience. I hope you won't delete it again.

This issue is finally getting the attention it deserves thanks to TeckFire's thread on reddit.

Also see this article from John Poole of Geekbench.

Hi, guys. I have the same problem on my 6S with samsung processor. Antutu shows near 50k... Sometimes animations get stuck and this is really annoying me. I've read this topic and see that problem must be in battery. But battery life is fine and I can use my phone all day without any problems. This must be rare problem and I don't know what to do now.

There is no point in battery replacing if problem will not go away. I've download CPU DasherX and thats what I see.

600 mhz.

I'm waiting for an answer, because the problem get me toxic toxic

I’ve had the battery replaced in my iPhone 6 by a reputable local company (Gamer Tech Of York, UK), but I’m afraid my Geekbench 4 speed scores haven’t improved. Typically the reults are 992 (single core) and 1803 (multicore), which is way down from the averages of 1463 and 2459.

Does the battery have to be replaced by Apple to get the high numbers back? Or is there some other fiddle I have to do?

Anyone’s help would be greatly appreciated.

Cheers!

laye65 wrote:

OK, I bought the battery from Amazon (where else would you get it from? :-) ) so does it mean that I got a poor quality battery?

Probably but there's no way to tell. As for where else you'd get a battery: Apple. However, now that you've opened your phone yourself, Apple may not consider you eligible for their battery replacement program. I'd still ask, though.

My post was intended to be a general observation to anyone who was thinking about fitting a non-Apple battery to their iPhone. This includes either replacing the battery yourself or by an independent repair shop.

In other words, the only 100% guaranteed way to get a result is to use an Apple Store.

Anperis wrote:

So, last chance, i am waiting for 10.3.3 and i hope they will solve this. Apple please, hear me...

Not here they won't. If you want Apple to know how you feel about something, use the feedback page:

http://www.apple.com/feedback

And for those people who will, almost inevitably say, "Yes, Apple IS reading here; they removed my post!!!!", the people who moderate these forums are not Apple engineers or developers. In fact, most of them work in a different state.

DodgyTactics wrote:

My post was intended to be a general observation

I believe the generally accepted etiquette would then be to reply to the original post.