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How to Fix Bad iPhone 6s Battery Life



iPhone 6s users continue to complain about severe battery drain and today we want to show you how to fix bad battery life should you encounter on your device.

The iPhone 6s and iPhone 6s Plus are still very capable smartphones and they’re solid alternatives to the iPhone XS, iPhone X and iPhone 8.

While many people love their iPhone 6s, some users continue to feel underwhelmed by the device’s battery life.

Fortunately there are some ways to get bad iPhone 6s battery life fixed without having to perform a factory reset or take a trip to an Apple Store.

How to Fix Bad iPhone 6s Battery Life

We want to help you fix your battery life issues and ensure that you’ll be ready if the problems suddenly return in the future.

Apple’s got more iOS 12 updates on the way and iOS updates can be the root cause of some battery life issues. That’s why we recommend memorizing some of these fixes so you’re prepared for all of Apple’s future iPhone 6s iOS updates.

The iPhone 6s’ operating system allows you to search for specific settings at the top of the Settings screen. If you can’t find something, you can search for it there.

Wait Two Days

If you just installed a new iOS update, give it a couple of days before drastically altering your settings or habits. Battery life sometimes takes a day or two to settle in immediately after a new update is installed. Keep that in mind for future iPhone 6s updates.

Use Low Power Mode

If you haven’t started using it already, you’ll want to start using the Low Power Mode that Apple debuted with iOS 9.

Low Power Mode will allow you to stretch out your last 10-20% of iPhone 6s battery life without killing your core services. Best of all, it accomplishes this with one press of a button. Toggle it on, and you’ll save yourself in critical situations.

If you’re at the 10-20% mark, you should get a prompt that asks you if you want to turn it on. You can also turn it on in your iPhone 6s’ settings if you need it before that. In order to turn it on:

  • Go to Settings.
  • Tap Battery.
  • Toggle Low Power Mode on.

We recommend putting Low Power Mode into Control Center for easy access. Control Center is the menu you see when you swipe up from the bottom of the display.

To do that, go to Settings, tap Control Center, tap Customize Controls and tap the green plus sign next to Low Power Mode.

Stop Closing Your Apps

You might think closing your apps will help conserve battery life on your iPhone 6s, but Apple says closing apps in your multitasking screen doesn’t help.

Use Airplane Mode in Bad Service Areas

If you’re in a bad service area, your iPhone 6s/iPhone 6s Plus is going to work extra hard to find a signal. This can kill your battery.

To offset this, you can do a few things. You can flip off cellular data or you can kill all of your connections using Airplane Mode.

To toggle Cellular Data off, you’ll want to go to Settings > Cellular > and toggle it off at the top there. If that doesn’t work, try using Airplane Mode. You can toggle it off at the top of the Settings screen.

Monitor Your Apps

It’s easy to blame Apple and iOS for your battery life troubles but sometimes it’s a rogue app (or apps) causing the drain.

If you’re noticing abnormal drain, you’re going to want to look into your app usage. If you use an app a lot, it’ll obviously drain a lot of battery. If you’re confident it’s not the constant use that’s killing the iPhone’s battery, you’ll want to dig in.

We recommend getting familiar with the iPhone 6s’ battery usage tool. It’s located in Settings > Battery. It’ll show up under the Battery Usage header.

This tool shows you which apps are eating the most battery. You can check the last 24 hours and you can check to see what they’re doing over an extended period of time.

If something doesn’t seem right, you’ll want to take a few more steps. First, you can try downloading the latest bug fix update if you haven’t already. If that doesn’t work, try reinstalling the app or apps causing problems.

If that doesn’t help, you’ll want to get in contact with the developer. Or, worst case scenario, uninstall it and find an alternative.

Delete Facebook

A piece from The Guardian asserts that the Facebook app is the cause of many iPhone battery life issues. Uninstalling it apparently delivered huge gains to performance so deleting is worth a try if you’re not attached to it.

Limit Background App Refresh

If you have background refresh turned on, apps will download information in the background so that new info is shown when you fire them back up. It’s useful but downloads can eat up battery in the background. This is why we recommend limiting it to the apps you use the most or killing it completely.

To get a grip on this feature:

  • Head into Settings.
  • Tap General.
  • Tap Background App Refresh.
  • Turn it off for the apps you don’t use or the apps causing problems.

It’s also possible to turn it off completely but you may not want to do that.

Shut Off Location Services

Location Services (GPS) can absolutely wreck havoc on battery life. If you’ve ever used Google Maps or Waze for an extended period of time then you already should know that.

To get a handle on what should use Location Services and when, head into Settings > Privacy. You can turn Location Services off completely with a toggle off, but we recommend going through your apps to determine what should be using what when.


You might not want some apps using Location Services in the background and you can limit that with a simple tap.

Turn Off Push

Like Location Services and Background Refresh, the iPhone 6s’ push feature for notifications, email, calendar, and more can suck up battery life. You’ll want to manage it.

To look at your Push Notification settings, go into Settings > Notifications. There, you can shut off notifications for all of your apps or apps that you don’t use on your iPhone.

You might also want to think about settings Mail, Contacts and Calendar to Fetch instead of Push. To do that, go into Settings > Mail, Contacts, Calendars and turn off Push.

Stop Using Dynamic Wallpaper

Animated wallpapers often look amazing, but they could cost you a few precious battery percentage points. If you want to save your battery stick to using static backgrounds.

Manage Your Retina Display

Your iPhone’s screen can eat up battery if it’s not managed correctly. The iPhone 6s and iPhone 6s Plus come with sensors that power the auto-brightness feature.

The auto brightness feature can be useful but it sometimes fails to work properly. If you think you can easily manage the brightness of your iPhone 6s Retina Display yourself, try adjusting it manually. It could help save you some battery.

iOS makes this extremely easy. All you have to do is pull up from the bottom of the screen to enter Control Center. From there, just use the screen toggle to adjust your screen brightness. Turn it down when you don’t need the screen to be bright.

Restart the iPhone 6s

If you haven’t turned your iPhone 6s off for awhile, try restarting it. This simple fix has worked for us in the past.

Reset Network Settings

If that doesn’t work, try resetting your device’s Network Settings. This will cause the iPhone 6s or iPhone 6s Plus to forget Wi-Fi passwords to make sure you have those handy.

To do that:

  • Head into Settings.
  • Tap General.
  • Tap Reset Network Settings.

Reset All Settings

If you’ve tired all of these little fixes and nothing’s worked, it’s time to take some drastic measures to fix your bad iPhone 6s battery life.

The first step to take is to reset all of your settings on your iPhone 6s or iPhone 6s Plus. To get this done:

  • Go to Settings.
  • Tap General.
  • Tap Reset.
  • Tap Reset All Settings.
  • Enter your passcode when the prompt tell you to.

This could take a few minutes and it will force your device to forget your connections (and passwords) but it might fix your battery issues. It will not delete any files.


If that doesn’t work, you could try downgrading to the previous versions of iOS if the downgrade is available and it was working fine on your iPhone 6s or iPhone 6s Plus.

iPhone-6s-review - 13

The downgrade process can be a bit tricky the first time but after you do it once you should be set. If you’re interested in dropping down to an older version of iOS you can read about the process here.

Restore from a Backup

If none of these aforementioned fixes work, you can try restoring from a backup or wiping your iPhone 6s/iPhone 6s Plus completely starting from scratch.

  1. Plug in and backup to the computer or to iCloud.
  2. Turn off Find My iPhone. To do that, go to Settings, tap your name at the top, tap iCloud, scroll down to Find my iPhone and toggle it Off.
  3. In iTunes, click Restore.
  4. Follow the prompts and the iPhone will reinstall the software from scratch.
  5. When it completes click Restore from Backup to put your information back on the iPhone or choose to set up as a new iPhone.

You should only do this if nothing else works.

Take Your iPhone 6s In

If you don’t want to restore or perform a factory reset, you can also make an appointment to go see an Apple Genius at the Apple Store. (Or another store but we recommend Apple itself.)

Geniuses will be able to run some diagnostics on your phone and they could help you figure out the problem. We once took in an iPhone 5s and discovered a bloated battery was responsible for the battery drain.

If you’re under warranty, and you will be for a year from your purchase date, you might be able to get another iPhone 6s or iPhone 6s Plus for free.

You can find a list of your local Apple Stores right here.

4 Reasons Not to Install iOS 12.4.1 & 11 Reasons You Should

Install iOS 12.4.1 for Better Security

Install iOS 12.4.1 for Better Security

If you're on the fence, here's one of the best reasons to install iOS 12.4.1.

If you value your device's security, you'll want to download iOS 12.4.1 in the near future because it brings an important security patch for your device. You can read about it right here

If you skipped iOS 12.4, you get its patches with your iOS 12.4.1 update. 

iOS 12.4 brought 19 security patches to the iPhone, iPad, and iPod touch. If you're interested in the specifics, you can read about them on Apple's security site

If you skipped iOS 12.3, your iOS 12.4.1 update carries iOS 12.3's security patches on board. The iOS 12.3 update brought 23 patches and you can read about all of them right here on Apple's site. 

If you skipped iOS 12.2, you'll get its security patches with your version of iOS 12.4.1.

iOS 12.2 brought a whopping 41 security patches to iPhone, iPad, and iPod touch in March. You can read more about the iOS 12.2's patches over on the company's website

It's important to note that Apple's iOS 12.2 update patched up an exploit that allowed websites to use motion sensors to "fingerprint" devices.

The exploit, discovered by researchers in Europe, uses JavaScript to snag data from a device's accelerometer, gyroscope, and magnetometer when the user visits an infected website. If the attack is successful, a device can be tracked around the internet. 

Fortunately, Apple's patched up the issue. If you skipped it, you'll probably want to move to iOS 12.4.1 soon.

If you skipped iOS 12.1.4, you get four important security patches including fixes for a widespread FaceTime eavesdropping bug that lets you call someone via FaceTime and hear the audio coming from their phone before they pick up the phone.

If you skipped iOS 12.1.3, you get some additional patches with your version of iOS 12.4.1. Again, they're baked into your upgrade.

Apple lists a grand total of 23 patches on board iOS 12.1.3 and you can read about all of them over on Apple's website. 

If you skipped iOS 12.1.1, you'll want to install the iOS 12.4.1 update on your iPhone, iPad, or iPod touch today. 

The iOS 12.1.1 update brought 17 patches for potential security exploits. They'll will help protect your phone. You can read about them here.

If you skipped iOS 12.1, you'll get the 24 patches from that update with your version of iOS 12.4.1. If you skipped iOS 12.0.1, your iOS 12.4.1 update brings two additional patches. Both patches are for potential lock screen exploits.

If you skipped iOS 12.0, and you're still running iOS 11.4.1 or below, your iOS 12.4.1 update comes with a longer list of security updates. 

The iOS 12.0 update delivered 16 patches for security issues. You can read about all of them over on Apple's security page.

In addition to those patches, iOS 12 delivers new security features aimed at protecting you and the data you store on your device. These include:

  • Enhanced Intelligent Tracking Prevention in Safari prevents embedded content and social media buttons from tracking cross-site browsing without your permission
  • Suppresses ad retargeting by reducing advertisers’ ability to identify iOS devices uniquely
  • Strong and unique passwords are suggested automatically when creating an account or changing a password in most apps and in Safari
  • Reused passwords are flagged in Settings > Passwords & Accounts
  • Security code AutoFill presents one-time security codes sent over SMS as suggestions in the QuickType bar
  • Sharing passwords with contacts is easier than ever using AirDrop from Passwords & Accounts in Settings
  • Siri supports quickly navigating to a password on an authenticated device 

Long story short, if you store sensitive data on your iPhone, iPad, or iPod touch, you have some really good reasons to upgrade to iOS 12.4.1 today.



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    11/25/2015 at 12:33 pm

    Thank you

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      02/19/2016 at 8:06 am

      Thank you!

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  3. saadtariq50

    02/14/2016 at 9:19 pm

    Guys, my friend send me this link that someone is making this so called fat battery that will have more power than normal 6S current battery.Here is link.

  4. Ram

    02/16/2016 at 1:28 am

    whats the use of a iphone when we stop all the services running in the background – My Iphone 6 never used to behave this way but i have upgraded it 6S where i am sick of charging it two times a day

  5. dieter

    02/23/2016 at 9:04 pm

    yes me too!!!!! i deleted it and reformatted it and still it loses power like a leaky tyre….

  6. Monica

    03/05/2016 at 10:49 am

    This is ridiculous. Even with the charger on, I can see the % drop. What the hell is going on? Will they fix this with a new upgrade?

  7. Sam

    03/09/2016 at 4:22 pm

    My phones ok when the 4g is on and I’m listening to music when I’m out but as soon as I get wifi it starts dropping?!

  8. Kurt

    03/13/2016 at 6:49 am

    Another idea that works for me is let the battery completely drain out to the point where it automatically shuts off and then let it charge to 100% before using it.

  9. sup man

    03/18/2016 at 9:28 am

    just dont buy an iphone… Get s7 or s7 edge. It lasts 6 more hours…

  10. simon

    04/13/2016 at 8:44 am

    There are so many different things that can be giving you a bad battery life. It could be too many apps running, an overheating issue, low storage, or even a virus. These are some more in depth reasons and fixes for the problem if anyone needs it

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  12. Lora Huls

    04/28/2016 at 9:28 am

    tried every trick in book, horrible still, fix upgrade already, getting sick and tired of having to lose settings because of poor upgrade

  13. Waqar Nadeem

    05/07/2016 at 7:29 pm

    Its a worse mistake to buy an iphone 6s and plus. I have to charge it 3 times a day. Battery drain is so rapid that I am now keep loosing important calls as the phone dies by itself during the day.
    Apple genius are of no use they replaced my phone without any luck. I did factory reset and removed all apps it helped a little but as soon as you reinstall the apps CPU starts clicking at a high number. I wish I had bought Galaxy S7.
    Finally i am going to buy an additional battery back for $50

  14. Waqar

    05/27/2016 at 12:50 pm

    I don’t know how to delete my review as my issue is resolved after talking to my carrier. It appears to be the carrier issue not the apple however it took us a very long time to figure this out. High data use and battery problems have a connection some how – I returned my battery pack as the iphone battery itself is working great so far.

  15. latatooti

    06/22/2016 at 4:21 am

    what was the carrier issue waqar?

  16. Karissa

    08/03/2016 at 3:37 pm

    I shut my phone off, let it sit for a few minutes, turned it back on… Then I bought a new phone charger through Apple. I have been using an after market one and I’ve noticed my battery has been really bad, my husband said something about it a few days ago. I had 19% when we were out to eat and it just died without using it. So I started using the apple charger along with doing everything this article said to do and my phone battery is acting a lot better now, still dies fast for a phone I paid $850 for, but it’s better then it has been being.

  17. Victor

    09/29/2016 at 9:17 pm

    My 6s battery doesn’t drain rapidly I’m ok with it

  18. Holly

    10/01/2016 at 7:41 pm

    The battery life isn’t good at all! I would hate to think of being stuck somewhere with out a charger and something bad happenes to someone and not be able to dial 911!!! That’s my big concern! Not everyone carries a wall and car charger around with them because their phone doesn’t hold a good solid charge through the day!!! This really needs to be fixed! I’m surprised there hasn’t already been some type of law suit because of this very thing happening to someone! When my phone decides to die it just shuts down until I can get back to my car or home! AND a lot of cars won’t charge your phone which takes FOREVER in the car without the engine running!!! I would make this problem the first one on the list to fix!!!
    Thank you!

  19. Jeanie Stouffer

    10/03/2016 at 5:46 am

    I agree with Holly and others. Was on the phone with Apple just yesterday trying to fix battery issues. Whu even have an $800 phone when I have to turn apps off/shut them down/low power mode/turn off app refresh blah blah. So disappointed with this iphone 6s.

  20. Guss

    11/23/2016 at 10:20 am

    My 6S has been running relatively fine since I got back in January. But since iOS 10 was released, my phone has suddenly started having battery issues. As in it drains much faster now, and I haven’t been using it any differently. I’m not a social media fanatic. I check Facebook, Instagram and Twitter every so often. But I don’t live my life in them. Eg. prior to iOS 10 release, I spend 10 – 15 min going through FB posts, and replying to a few. Used up about 1% maybe 2%. Now, for the same amount of time, doing the same things, my battery goes down about 8-10%. Yes, I’ve learned to test stuff like this over the years. For referencing in times like this.

    I can’t prove, nor will any Apple authorities admit to it. But using basic logic and common sense, it leaves one to wonder. For the last 4 versions, what I’ve noticed was whenever a new iOS comes out, within a couple of weeks or so, my battery starts draining faster (no more usage than before). And whenever I contact Apple, they always say “I can’t help you if you aren’t on the latest iOS”. Hmmmm. And also keeping in mind, that Apple CAN and DOES push iOS updates to some peoples phone without their consent or knowledge. It doesn’t install, but it’s put there by Apple regardless. If they can do this, I’m absolutely certain they can do other things to our phones without our knowledge or consent. They’ve been doing it to me for years, since the iPhone 4S. In fact, just in the last couple of weeks, I’ve had to decline and delete the updates twice already. If and when I decide, I will do it myself. No reason why Apple should be twisting my arm to. I know all the troubleshooting tips. I’ve done them all, except for resetting and reloading. Which in my experience has NEVER worked for me. It was just a pain the arse to have to do.

    I really do believe that Apple does this to force people to update to the latest iOS, without looking like they are forcing people. Until anyone can explain with valid reasons as to why this happens to some and not all, this is the only logical explanation that comes to mind. Doesn’t take a lot of code to tweak something to cause the iPhone to use up more battery life in the background than normal.

    In Apple’s defense though, they did acknowledge (finally) a battery issue with their phones. And have offered to replace the battery on selected iPhone 6s that qualify. You’ll have to check in with an authorized Apple repair or got the Apple Store to check if your phone is one of them.

  21. Rich

    12/03/2016 at 12:37 am

    I turned off all background apps, locations settings and turned down the retina display. It’s easily given me a few extra hours of battery life.

  22. MLB

    12/12/2016 at 4:18 pm

    For what you pay for an iphone it should have a decent working battery. I have turned off everything i can and still use my phone. The battery still needs to be charged by noon. I finally got a case that has a back up battery and that helps, but I still have to charge my phone several times a day. I agree with A previous comments by Ram which stated why have an iphone if you have to shut everything off. I am not going to run in and purchase yet another expensive phone in order to get more battery life. Apple should be taking care of the problem or allowing a greatly discounted upgrade for those stuck with the lemons.

  23. Alfonso Quiroz

    01/04/2017 at 7:14 am

    I have the same problem, charged my iPhone 6S Plus (iOS 10.2) for approximately 5 hours at night and in the the morning when i unplugged it, it showed 100% but then within 5 minutes of being unplugged the phone dies and it showed the dead battery symbol so I could plug it in again. This only started happening after I installed the iOS 10.2. I bought an iPhone because I thought it was reliable but i was wrong. I’m not sure how the sales are going for the iPhone 7 but it is a big coincidence that the new iPhone comes out and a new software is released that causes issues on the old iPhones. I had the iPhone in the past and it was OK so i decided to buy the iPhone 6S plus and with the new software I’ve had a lot of problems. Even to the point where I’ve had my phone for about 9 months but when i enter my serial number on the apple website it says it is out of warranty. Pretty sad that Apple doesn’t care about their customers.

  24. Nrapendra pratap Sharma

    01/07/2017 at 6:24 am

    Indeed great knowledge. I was looking for knowledge on downgrading IOS version. I also did a successfull experiment last night to stable my iphone 6s battery drainage. Link:

  25. Glenn

    05/12/2017 at 4:41 pm

    Can’t THANK YOU enough for the excellent suggestions. I was able to locate an app that I’ve never used that was consuming 35% of my battery. I was ready the bring my iPhone to the Apple Store for replacement of the battery. Thanks to your suggestions, I don’t need to do that… THANK YOU!

  26. Mintcake

    05/15/2017 at 8:31 am

    I agree with Ram , you get a phone that gives you more features and then have to turn them off to protect the battery life. Not good . As suggested , I will try turning the WiFi off when not in use and monitor the results. Come on Apple sort it out!!

  27. Gerald Scartiong

    09/11/2017 at 7:57 am

    Just buy new iPhone. Like iPhone 7. I don’t have any battery issues with a 3G working full day, I have enough percentage by the end of the day.

  28. DRSmith

    09/30/2018 at 8:07 am

    40 years of using cell phones – never met the garbage experience I have enjoyed in the last 2 years with Apple technology – a fact…

    Similar battery issues with 6 plus under v12x IOS with battery lasting 20 – 30 minutes – one app running (bluetooth enabled music app, no cellular access granted to any apps except Gmail etc.) – Difference between final v11x vs 12 is a disaster – from 3-5 hours on similar (read no changes) usage to literally 20-30 minutes battery life – (note battery health @80%, and under non-high performance setting thanks to v11 crashing the system massively a few months ago)…

    No word from Apple, no acknowledgment – Nada – terrible, terrible, never Apple again – has been a fiasco for the last 18 months or so… Now have to have the phone plugged into a battery pack whenever I am not plugged in

    – Bottom of the pile you are Apple – contrary to the BS promotions… Not reliable, poorly executed designs, buggy, performance hampered …

    A World Citizen

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