I have no doubt that calibrating the battery after an iOS upgrade will improve battery life. The first step is to drain the battery completely. This can be accomplished with normal use, but sometimes this may not be an option. To expedite battery drainage, turn on the flashlight, turn up the brightness, and play a video, preferably streaming over the Internet. Allowing the device to sit overnight will further drain the battery. This is partly due to the fact that some battery life was remaining when it powered down. To keep your data safe, iOS has to power down before the battery is fully drained.
Otherwise, it would shut off without being able to save its state to secondary storage. Next, plug your iPhone into the charger. If possible, keep it in the charger longer. Two additional hours should do it. It is best to charge your iPhone when it is off.
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After you plug in the charger, your iPhone will automatically start up in a few minutes. Your iPhone will charge faster when it is off. It will also generate less heat, which will extend overall battery life. Five hours is a safe bet for an iPhone 6 or 6 Plus.
Now that your device is fully charged, you should reset it. Your device will boot up and is now reset. Remove the charging cable when your device is up and running. The following process is what I consider to be the gold standard of iPhone battery calibration. For some, it might not be possible to follow all of these steps.
If you are an on-call professional or hopelessly addicted to your iPhone, you might not be able to turn off your iPhone overnight or even for a few hours. Use your iPhone until it shuts off automatically. Plug your iPhone in and wait for it to power up. Let your iPhone charge for at least 5 hours. Calibration can help in some cases, but it is not a panacea.
Fortunately, you can prolong the lifespan of your new battery by following a few tips. Many users are skeptical of this process and feel it is superstitious. I hope I have shed light on the reasons why you should calibrate your iPhone battery. I have found this process to work. Of course, your battery may drain at different rates depending on use. For more information and tips about lithium-ion batteries, please read this article. I bought this iPhone 5s from a trusted seller and plugged it in.
The Apple logo would show for about a second and went away. This repeated until it started charging. Try calibrating the battery. It seems as though the battery may be shot. I had left it on the 5W Apple charger for h. Now the percentage increases when connected to my iMac. Your approach seems to be the right way to go. I hope it works out! Wonderful wealth of information and I like how it continues! I have a week old iPhone X.
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Would it make sense to calibrate it now or wait a couple of months? Thanks much. I would wait a few months. I find that the opportunity to calibrate usually presents itself. It was interesting to learn about how calibration affects your battery. I learned a lot about why calibration is important. My wife and I just purchased those wireless chargers for the X. Really convenient but I do notice she takes every opportunity to rest the iPhone on the charger anytime she walks in the door. Is the advice still valid or was that from an earlier period?
Thanks again for this wealth of information.
Thank you for sharing this page. I really appreciate it. Also, sorry for the delay in responding to this comment. This is still valid for the iPhone X. But there is a tradeoff between battery lifespan and convenience. Given the longevity of Apple devices, it will become obsolete before the battery dies. Original battery was getting tired and phone was horribly slow with new iOS update.
Worked fantastic for a couple of weeks and I then found this article. I figured I would add some additional battery TLC by fully draining and calibrating it as per the above advice. Sadly it appears to have cooked my new battery and have found other articles that state fully draining a lithium ion battery is not only not necessary or recommended, it can be detrimental. My advice is to do some research before doing this procedure. In fact, I still use my old iPhone 4 every day as a kitchen timer and clock. I only charge it once in two weeks.
I also have a three year old iPhone 6, with the original battery, that has been calibrated several times. The battery is in mint condition, and it is not slowed down due to a failing battery.
How To Calibrate iPhone Battery |
Read through the comments and you will see many claims that this works. Although it is no longer in the manual, you can easily find that Apple Store geniuses recommend and follow this procedure. I have written about these issues in other articles. I have studied lithium ion batteries, particularly with regard to Apple devices, for years now. This cockamamie theory pops up every once in a while. There seems to be a lack of common sense in your comment. Some people do this every day. This is a misunderstanding with alarmist implications. It is simply not true.
It seems to me that you had a defective battery installed. Either that, or you used a charger with too much power. That is completely cockamamie. It is completely safe to run down an iPhone battery all the way and charge it. The battery you bought may be poor quality. It is well known that unofficial Apple replacement parts are often poor quality.
You may have damaged the phone or battery with the DIY battery replacement. The lesson to be learned here is that people should get their devices serviced by Apple or an authorized service technician. I know for a fact that calibration does not ruin the battery. I also know for a fact that people often buy poor quality batteries and damage their phone with DIY repairs.
I have linked to this in my article, but you neglected to read it, and decided to add an ad hominem attack on my credibility. Your personal attack is ironic, because you attempt to undermine my credibility, yet you are too ignorant and lazy to read a linked article providing proof. Your inconsiderate and thoughtless comment only makes you look bad. Your writing is garbage.
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Spell checking seems to be yet another technology you are unfamiliar with. I had to fix your spelling errors and profanity, but I left everything else as is. You should be embarrassed to post such poor quality trash. I rarely deal in ad hominem attacks, but you are a one-in-a-million moron. You are vastly overvaluing your opinion. You should be paying people to read or listen to your opinion, as it is of such low value.
This includes non-Apple devices. It is not a measure of lithium-ion concentration. That is much too difficult to measure. It is an abstraction. Was it too hard to search the web for this before posting? The link was right there. I recommend draining the battery fully overnight or for a few hours.
This only damages the battery if this is done over long term storage — months. I cover this in more detail in the linked article about extending iPhone battery life. You seem more interested in clobbering us with the tiny bit of misinformation you have. Wow, there is no limit to your moronic nature. Apple slows down some iPhones with failing batteries. This was all over the news. The conclusion you have come to underscores what a complete moron you are. Are you in a prison or institution? Are you not able to get news coverage?
Or are you just a moron?
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Incorrect once again. The power IC manages charging. There is nothing in the battery itself that regulates charging. I actually read the documentation for power ICs in Apple devices.
Some of us actually research before writing. I replaced my 4s battery a year ago and i still have the problem with the phone shutting down at approx. I am not sure if it is just a calculation error or if I am being short changed. I have resorted the phone twice. That did not change a thing. This situation makes it difficult to fully discharge the battery if it is almost half charged as the phone will not turn on. About a month ago, I managed to get it fully discharged once, but it took 2 weeks.
I drained it again, the fully charged the phone. I may not have restarted it. I have an iPhone 4s as an extra phone. It has a fairly new battery. How would you run the battery done to 0 if the phone will not turn on? Would this calibration work on my phone? My iPhone is new. You can try it, but I think something else is going on.
When you buy a new iPhone, there are often background processes that drain the battery faster. I remember when I first got my iPhone 6, it was losing battery power like crazy. I calibrated it, and it helped, but something else was going on. These processes also run after major iOS updates.
Does anyone have any observations to make in relation to re-calibration and the Battery Health statistic in iOS I calibrate it a few times a year. It really surprised me that the battery is in great shape. It may keep the capacity higher if it is done regularly. My iPhone 4 manual recommends calibration with the justification that partial charge cycles leave some ions stagnant — they stay in the same charged state.
This causes ions to seize and diminishes battery lifespan. Calibration ensures that ions are discharged and then recharged. This seems to be a common problem after the iOS I recently upgraded to iOS This is to be expected. After major updates, iOS typically runs some optimization tasks in the background. It seems to get back to normal after the subsequent charge cycle.
Just make sure to do this by December This was part of their apology for slowing down iPhones with failing batteries. You will have to live without an iPhone for a few days. Make sure to forward calls. As a software developer, I think they made the right decision. No one I know wants that. It is the typical, mindless Apple-bashing that happens in Internet echo chambers. Thank or blame social media for that one. What is your opinion on leaving the battery in low power mode all the time? It really depends on whether I need my iPhone all day or not.
If I am staying home, I run it down as much as possible. That said, with all of the cyber attacks going on, my Internet service is fragile. This is actually done in satellites, since it is so hard to get up there and replace the batteries. You have to choose between preserving battery lifespan and convenience. I noticed Apple updated their battery info page once again, removing even more information.
They used to mention calibration. If you prefer the latter method, open the control center refer to the above steps then tap the Wi-Fi, Bluetooth and other relevant icons to turn off. This is an iOS feature that is used to control which apps can refresh in the background. When this feature is turned on, your apps automatically update in the background while multitasking. While this may serve some benefits, it also consumes a lot of power and resources. For location services to work, a GPS, Bluetooth, crowd-sourced Wi-Fi hotspots and cell tower locations are required in order to determine your approximate location.
While this can be beneficial at certain instances, enabling this feature can likewise drain your iPhone battery faster than normal. That said, turning this feature off is recommended especially if not really needed. Aside from saving power, disabling location services is also one way of protecting your privacy as your location becomes unavailable or inaccessible. Notifications are there to let you know of something new that occurs or comes in to your iPhone.
A notification sound could mean some missed calls, new messages, and appointments. While this feature offers some benefits especially when it comes to keeping you updated of any new emails you receive, keeping it push notification enabled can also contribute to battery draining. Your device needs to be connected to the servers like Gmail for instance, to fetch new data and notify you on it. What happens is that your iPhone will fetch new data in the background for as long as your phone is turned on and connected to the Internet.
Needless to say, this feature can also consume a lot of power when enabled on your iPhone X. A factory reset can also help clear out some system bugs that might have caused certain apps to get rogue and consume a significant amount of power in a short span of time. Please note that a factory reset will erase all your iPhone data including personal information and customized settings. That said, be sure to back up your data before you proceed with the reset.
And that covers everything in this tutorial. Keep posted for more comprehensive guides to populate our iPhone X Tutorials section.