What to do if faced with iPhone 7 battery drain problem after installing iOS 11, other issues

Hello and welcome to our latest #iPhone7 troubleshooting article. Today we cover a couple of issues for this device, including the notorious battery drain problem after installing iOS11. We hope you’ll find it helpful.

If you are looking for solutions to your own #iOS issue, you can contact us by using the link provided at the bottom of this page.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Below are specific topics we’re bringing for you today:

Problem 1: iPhone 7 Plus screen freezing up after replacement, reasons why you need to let Apple repair your broken iPhone 7

Hi. I purchased a used iPhone 7 Plus a few months ago. The screen had marks all over the glass that wouldn’t come off so I went to a repair shop for a screen replacement. They did the repair and everything seemed ok until later that day when I made a payment at a store using Apple Pay, the touchscreen froze up. The Home button and sleep/wake button still worked but the touchscreen was completely unresponsive. I did a hard reset and that fixed the touchscreen. I originally thought it was an issue with iOS 11 since I had just updated to iOS 11 just before the repair. After that I started noticing lag with scrolling as well as lag with the keyboard, like missing keystrokes. Another thing I noticed as the weeks went by is the display is slightly off color-wise compared to an untouched iPhone. The display on the aftermarket screen seems like more of a cooler color temperature and some colors are not as saturated as a stock OEM display. I assume the display is on the cheaper spectrum of copies for the store to make reasonable profits. While this was going on I still thought maybe it’s related to iOS 11 and future updates might iron out bugs. Now I’m running iOS 11.1.2 and the problems still remain. I’ve done a considerable amount of research online trying to find solutions and it appears some makers of after market screens were aware of the issue with iOS 11 and it’s affecting a number of people.

While researching I found out that Apple has a calibration machine they use for screen and home button repairs and the only solution I can think is to try to get it repaired by Apple. I’ve done a battery replacement on a iPhone 6 so I’m familiar with opening up an iPhone but, I’m leary of attempting to open up the iPhone 7 Plus because I don’t want to inflict further damage.

I’ve restored the phone a number of times including the last time doing a full restore and setting up as new and manually reinstalling everything. I’ve read some people have found the front facing camera and proximity sensor cable was not completely seated right and plugging them in properly solved the issue. Like I said, I’m afraid to open it up and causing more extreme damage but at this point I’m open to any suggestions on this matter.

When iOS 11.0.3 was released, some people claimed it fixed these lag issues with screen repairs but not for me. Do you think it could just be a cheap aftermarket screen that is simply bad or other problems not related to the screen? Thank you for taking the time to read this I’m desperate to just have a properly functioning iPhone. — Derek

Solution: Hi Derek. First of all, there’s a few sets of wisdom in letting Apple fix Apple devices. For one, Apple technicians are familiar and trained how to fix common hardware issues as broken screen assembly in iPhone devices. That’s what they do for a living day in and day out so it’s fair to say they must know what they’re doing.

Another reason why you only let a trained Apple technician fix an Apple device is the availability of proprietary tools in fixing evolving issues. We’ve done our fair share of screen assembly replacement for the iPhone 7 and we can tell you, we don’t have to calibrate something. It doesn’t mean though that Apple can’t make use of exclusive testing tools for their own repair sessions. For example, it’s a common mistake for some amateur users to replace an iPhone 7 Home button together with the screen. This is can be problematic because once the replacement is finished and they boot the phone up, it will act as if there’s no Home button at all, or it will keep on showing a message that touch ID is missing or cannot be activated. This is due to the fact that the Home button in an iPhone 7 has an integrated chip that’s unique to the device itself. This chip carries a unique identification that is only compatible with the original motherboard. If you use an aftermarket or different Home button, the motherboard will not recognize it. Apple however have the tool to reprogram the Home button so it can be identified properly by the motherboard. Sure Apple repair may be a bit expensive compared to your friendly neighborhood shop but at least you know quality care has been taken to bring the normal working order of your device. And it’s voluntary of course so if you encounter problems due to poor third party shop repair, be ready to invest in yet another follow up sessions.

Aftermarket components may be incompatible or of poor quality

Secondly, original components follow stringent requirements from Apple during manufacturing so they usually perform better and last longer than aftermarket versions. It’s no surprise that some screen replacement purchased somewhere fail only months after being installed. Some even fail right during or after repair. Which is also why you should only let Apple do the repair and replacement for you.

Hardware repair can sometimes be tricky, even for seasoned technicians

Thirdly, replacement is easy but diagnostics isn’t. An iPhone 7 motherboard has hundreds of components. Unless you’re absolutely positive that the screen is the only component causing the problem, replacing it would probably fix the problem. However, if the issue is similar to what you’re experiencing right now, it’s possible that more components may be involved. And this is where the true challenge lies. Knowing the true cause is more difficult than replacing a component. Diagnostics involve knowledge of the entire system. Basic knowledge of piecemeal replacement is not enough. Again, this is another reason why you want someone who’s familiar with how the entire system works to do the repair. Some repair shops only perform parts replacement, ignoring the fact that there may be other possible reasons for the issue.

Apple won’t perform repair on tampered hardware

Unfortunately, Apple is strict when it comes to performing repairs on their devices. Aside from charging users for the repair fee, they’ll also refuse to repair those that were previously repaired by non-Apple technicians. This is not about being selective but due to the common sense fact that they have no idea what transpired during previous repair. To put it simply, your phone is no longer in its factory state and possibly sporting non-validated components. Not only is repair history important, but no technician will usually do repair on top of another technician’s job. Thus, as a policy, Apple won’t repair a device that’s been opened by none of their technicians or service center. This is also the policy of most manufacturers like Samsung, Microsoft, Sony, etc. For this reason, you must either do the repair yourself, or bring it back to the shop who first did the initial repair.

Our blog doesn’t provide hardware tips

If you noticed from our other articles, everything that we provide are software troubleshooting and tips. Repair is a complicated process and needs careful physical examination of the device. Since we can’t obviously take a look at your phone, we are in no position to advise you on what to do. This and for stuff mentioned above, are main reasons why we don’t accommodate requests for hardware solutions.

Problem 2: What to do if faced with iPhone 7 battery drain problem after installing iOS 11

My name’s SAM PHARAT. I’m living in Cambodia. I would like you to give me any suggestions for the problem that’s happening on my iPhone 7. it has drained the battery so bad since I upgraded. Specially, while on standby mode. I have tried many ways like restarted as a new iPhone , always upgraded to the last version, and also didn’t download even an app by follow the tips in internet but didn’t get anything better… I wish you would help to heal it. Many thanks. — Mark

Solution: Hi Mark. Let’s be honest here. There’s now a new kid (or kids) in the block — the iPhone 8 and iPhone X. And guess what, the iOS 11 operating system is designed to work on these new monsters and not in your iPhone 7. As newer operating system require more power to work, your iPhone 7 may be trying very hard to cope up. It’s the reason why a lot of users are complaining about battery decay right after iOS 11 was released. The older iPhone model you have, the better it is to stick to relatively older operating system versions as well to prevent battery drain issues.

Other reasons for fast battery drain that we’ve seen so far include some below:

New under-the-hood changes

iOS 11 and its subsequent sub-versions bring a lot of new features. Some of these features, including major reliance on camera functionality, which by the way is an energy hog,can bleed a battery dry in a few hours. Since iOS code is designed mainly in anticipation of it being used in newer iPhone 8 and iPhone X, some coding limitations or bugs may make it an inefficient operating system in older models.

Try to avoid testing all new things at once

If your day relies heavily on a working phone, try to avoid checking out the new stuff that comes with the operating system. We know how tempting it is to test out some new stuff but we suggest that you do it when you can readily charge the phone.

Apps installed also matter

The quality and quantity of apps in a system can also dictate how fast battery drain occur. Poorly coded apps can bog down processes and affect the overall energy consumption of your phone. The more apps you install, the greater the chance that fast battery drain occur so try to uninstall unused or unnecessary apps. If you haven’t used one in a couple of weeks, that app is most probably not that important. Remove it and continue checking other apps.

Limit app refresh and location access

A lot of apps are designed to constantly refresh in the background whether the phone is online or offline. While this a good way to get new content or updates like those in your social media apps, email, or messaging apps, it’s also a big drain to the battery. We suggest that you limit the app refresh in the background by doing the following:

  1. Open Settings app.
  2. Tap General.
  3. Tap Background App Refresh.

Together with limiting app refresh rate is minimizing apps that uses GPS or location in the background. To do that, follow these steps:

  1. Open Settings app.
  2. Tap Privacy.
  3. Tap  Location Services.

Newer iOS versions are not perfect

There’s no perfect operating system. Everything is evolving when it comes to software so bugs will always be a constant reality. To minimize known problems though, be sure to regularly check for updates and install them.


Engage with us

If you happen to have a problem with your own iPhone, let us know about it and we will do our best to post them and their solutions  in our upcoming articles. You can use this link to contact us for assistance. We can’t guarantee an answer to every question but rest assured that we will exhaust everything on our end to help you.

Be as detailed as possible when describing your problem to help us diagnose your issue easily. If you can include error messages, popups, attempted troubleshooting steps, and circumstances leading to the problem, that would be very helpful.