How to check your iPhone's battery health and disable performance throttling (iOS 11.3)

How to check your iPhone's battery health and disable performance throttling (iOS 11.3)
Alright, alright! So, it turned out all those conspiracy theories about Apple slowing down old iPhones had some type of truth to them. Apparently, Apple put in a mechanism in iOS which would limit hardware performance if the phone's battery had deteriorated and was no longer capable of providing reliable power for the phone to function right. Apple's train of thought was this — better have a slow phone that works instead of one that restarts randomly due to the battery failing.

The problem? Apple forgot to tell the customers that this was happening. So, some people were out there thinking they need a new iPhone when a change of battery would've fixed their performance woes just as well. Cupertino took a few steps to apologize for this miscommunication, one of which was adding a new Battery submenu in iOS 11.3, which will very clearly let users know what their iPhone's battery health is as well as whether the phone is being throttled or not.

Back to the point — what if you don't want your performance limited? What if you just want to use the full power of the phone and risk the occasional restart? Well, that's also possible! Here's how to do it!

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14 Comments

1. GreenMan

Posts: 2694; Member since: Nov 09, 2015

That's a decent feature. I wish Android had that. Speaking of Android; is there an app to see your battery's 'true' capacity in mAh? Now, I don't want to see my S6 peak battery capacity as I know it's 2,500mAh. What I DO want to know is how much capacity (in mill-amperes) it currently has after 2 years of relatively heavy usage. Anyone? Thanks in advance! G'Day!

2. cncrim

Posts: 1558; Member since: Aug 15, 2011

I thought that i will hold on to s6 Edge for 4 years or so but one biggest flaw about it that i dont like is battery life. The s6 is the most complete package features I wanted such IR blaster, Samsung Pay. However when come to battery it is horrible, even on stand by time, 100% charge in the morning and 35% left by 9 o’clock PM with light use. Then once I got S7 and S8, I cant go back s6 but I miss IR Blaster. Come on Samsung bring back IR Blaster. My remote control get miss place all the time.

5. GreenMan

Posts: 2694; Member since: Nov 09, 2015

Hence I keep a burner phone!

10. yyuu1000

Posts: 260; Member since: Jul 26, 2012

samsung should have never killed the removable battery

3. worldpeace

Posts: 3092; Member since: Apr 15, 2016

Try accubattery. But it can't instantly show current capacity (since system can't simply detect it). It could show estimated current battery capacity after several charge+discharge cycle (in other word: a few days of normal usage, lol)

4. GreenMan

Posts: 2694; Member since: Nov 09, 2015

I see... Thanks mate!

11. Back_from_beyond

Posts: 1162; Member since: Sep 04, 2015

My phone after a year of use says it's at 98% full capacity when fully charged. Makes you wonder how Apple managed to make a crappy SoC that causes it to go down past 80% in a year.

9. TechSceptic

Posts: 1156; Member since: Feb 05, 2018

Android doesn't need it, as androids doesn't throttle performance, as their batteries are actually good quality, which means that they can easily power the internals of the phone. The people who found out about the iphones throttling actually did the exact same investigation into android, and they couldn't find any proof of androids throttling at all. It simply isn't a problem for android, as the android manufacturers do the reasonable thing and account for the fact that li-ion batteries degrade with time, by equipping them with better than necessary batteries. If you had a menu where you could check whether your phone is being throttled or not, then it would just show you that it isn't being throttled, constantly. When talking about the health of your battery, you already have the necessary tools to investigate that. The battery settings of android has always been quite informative, and they inform you of things such as on-screen time. The simple fact is, if your phone has a much worse battery life now than it did, and it isn't enough to get you through the day, then you know a battery replacement would fix that.

14. buccob

Posts: 2949; Member since: Jun 19, 2012

For Sony Xperia, you can use the Engineering Menu by pressing *#*#7378423#*#* (service) in the dialpad.... and there you can see "Battery Health" and current REAL capacity... This has been available since I started using them in 2011... For some models, you can use *#*#4636#*#* instead, and there will be the Battery Info.

6. TechSceptic

Posts: 1156; Member since: Feb 05, 2018

"The problem? Apple forgot to tell the customers that this was happening." No, the main problems seems to go completely over a lot of people's head, at least the ones who seems to be a little too fond of Apple to think critically. The main problem here is the fact that Apple equips their phones with batteries which cannot power the device properly, as early as a year after you bought the device. Apple is completely aware that this was an issue, as Li-ion batteries are a very well known entity, and yet they went ahead with it anyway. They obviously "forgot" to tell people that the reason their phones was messing up, was because Apple choose the phones with batteries that couldn't even supply them. The reason for doing this is simple. People's phone slow down, so they buy a new one and then Apple makes even more money. Apple is probably the greediest of all the smartphone manufacturers. I don't think there is any doubt after this whole incident, as well as the pricing of the Iphone X.

* Some comments have been hidden, because they don't meet the discussions rules.

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