How to Fix iPhone 6 Battery Problems

iPhone 6 battery issues but you're not technical? No problem!

Our smartphones have become an integral part of our lives, and if it develops a battery problem or stops working entirely it can feel like you’ve lost a limb.

With modern phones now resembling handheld laptops there’s a lot of circuitry that can go wrong, and one of the key elements that can prove problematic is the battery. We’ve put together this guide for non-techies to help you identify if you have a problem with your battery, to determine the different fixes, hacks and options available, from testing your battery to changing settings on your device - or if you need to bite the bullet and get an iPhone 6 battery replacement.

Can you replace an iPhone 6 battery?

The short answer is yes, you can replace an iPhone 6 battery. The longer answer is that to do so (as we will explain) is quite a fiddly, technically complicated process with the potential to cause more harm than good. You’ll need some technical ability, a steady hand and a set of tools to help you do the job. There might be some other options available first though, so you might not have to replace the iPhone 6 battery at all.

iSmash can diagnose the issue with your iPhone 6 battery and repair or replace while you wait.

iPhone 6 Battery Replacement Cost

If, after reading this guide, you conclude that you do need an iPhone 6 replacement battery - and you don’t want to do it yourself - then there are many options available when it comes to employing the services of a professional to undertake the job. As with all services, iPhone 6 battery replacement costs vary, depending on a whole host of factors, and you need to know what to look out for.

There are independent phone repair booths operating in every shopping centre and market across the UK, plus any number of high street repair shops, but an equal number of horror stories about post-repair faults, broken handsets and invalid warranties to go with them. So: where to replace your iPhone 6 battery? Don’t fall into the trap of automatically choosing the cheapest offering you can find - you want to be sure that your repair professional a) is a repair professional, b) is using high quality, original parts - not a battery that won’t hold its charge, or worse, explode or leak in your device - and c) provides a full, comprehensive warranty of the work they undertake, with a commitment to be responsible for any remedial actions if there are post-repair issues or faults.

Once you’ve considered these factors you’ll then have a better understanding of what a reasonable iPhone 6 battery replacement cost should be, and what you should get for your money. Market prices typically range anywhere from £30 at the lower end (where you should be wary), going all the way up to £80 from Apple

Jump to the iPhone Battery Replacement Guide

How to fix iPhone 6 battery problems without replacing

Before you go ahead and book a replacement battery though, there are several things you should look at to understand if there’s even a problem with the cell itself. Here we have some tips on how to fix iPhone 6 battery problems without having to replace it.

How to improve iPhone 6 battery life

Forget screen size, speaker volume or memory capacity: the battery is the most important part of the iPhone 6 - without this, you have no power! While battery technology has improved in recent years, it can still be a struggle to get your device to last the day. Here’s how to make your iPhone 6 battery last longer.

Enable Wi-Fi Assist - or Turn off Wi-Fi Altogether

Wi-Fi is great when you want to save data but it can have an impact on battery life - particularly if there is a weak signal, your iPhone 6 will cling onto it, using more power. Wi-Fi Assist switches to your network data when the signal is low - this can save battery power, but remember to keep an eye on it as your data will be used instead. Alternatively switch Wi-Fi off completely - if you’re not connected to a network your phone is constantly searching for one, draining your battery. Both of these will help save battery life on your iPhone 6.

Motion Effects and Dynamic Backgrounds

Phones do a lot of fancy stuff these days - however, a lot of it isn’t required for day to day use - for example, motion effects. To improve your iPhone 6 battery life turn off these slightly moving icons and notifications. Creating them takes up precious battery power so go to settings and turn ‘reduce motion’ to on. Similarly, dynamic backgrounds also have some movement to them: turn them off under settings and choose a ‘still’ wallpaper.

Enable Low Power Mode

Another way to make your iPhone 6 battery last longer is to enable low power mode. This turns off all but essential features when the battery dips to 20% - but you can turn it on at any time when you want to save some power.

Reduce Screen Brightness

Simply go to ‘display and brightness’ and lower the screen brightness on your iPhone 6 to improve the battery life.

Turn Off Bluetooth

Unless you’re need Bluetooth on (for example if you’re connected to a speaker system) there’s really no need to leave this active. Turning this off will help conserve a bit more of your iPhone 6 battery.

Turn Off Location Services

Loads of apps use location services for GPS. While it’s a neat feature, if you’re trying to squeeze more out of your device it makes sense to disable this when appropriate. You can turn it off (in Settings/Privacy/Location Services) to help lower the drain on the iPhone 6 battery.

Why Is My iPhone 6 Battery Percentage Yellow?

Don’t worry - this is not an indication that there’s a problem with your battery. As mentioned in the section above, one of the ways we suggested you can save battery life on your iPhone 6 is by enabling low power mode - and that’s all that’s happened here. The iPhone 6 battery is yellow because low power mode is on. Simply go to settings/battery and turn it off - it will do this automatically when the charge reaches 80% anyway. This crops up as an issue because Apple implemented it as a new feature without announcing it. Just remember: a yellow battery indicator doesn’t mean there’s anything wrong.

My iPhone 6 Battery Is Draining Fast

In addition to the tricks detailed above, if you have a rapidly draining battery, there are a couple of other things you can try to alleviate the problem.

Push Mail

When this setting is active, it means your iPhone 6 is constantly connected to the email server so that you get your emails instantly. That’s a great feature, but as you might expect, one that can have an impact on your device’s power. Amending this to ‘fetch’ your emails periodically under Settings/Mail/Accounts will help make your iPhone 6 battery last longer...assuming you can live with not receiving every email instantly. :)


One more thing to try...under Settings/Privacy, do to Diagnostics and choose ‘don’t send’ - similar to location services, push mail and WiFi settings, this stops your phone continuously trying to communicate with other parties and consequently can save battery life on your iPhone 6.

My iPhone 6 Battery Percentage Jumps

Similar to the issue with the yellow battery indicator symbol, if your battery indicator is sticking on a percentage or jumping around, it doesn’t mean you need a new battery. This annoyance can be down to the iPhone’s operating system losing sync with the battery and is easily fixable.

Firstly, and forgive us for saying this, but try turning your iPhone off and on again. This is often enough to re-sync the system.

If that doesn’t work, you can reset your iPhone 6 settings. This won’t delete any data if you follow these steps:

  • Go to Settings/General/Reset/Reset All Settings.

  • Then enter your passcode and tap Reset All Settings when prompted.

  • The iPhone 6 will now restart - and with a bit of luck, your battery indicator will be back to normal.

My iPhone 6 Battery Drains When Off

If you’ve followed all of the above tips and tricks to improve your iPhone 6’s battery life, but the battery drains even when turned off, then there may be a problem with the cell itself.

The best way to test this is to fully charge the phone, then take the battery out of the device overnight. If you replace the next day and it has lost more than 5% power, this indicates a problem with the battery, as you’ve removed any potential drain from the phone (via apps etc). At this point it is worth getting in touch with us here at iSmash to diagnose and replace the iPhone 6 battery.

My iPhone 6 Battery Gets Hot When Charging

It’s perfectly normal for your device to get warm when in use. This is more obvious when there are more demands being placed upon it - lengthy use of GPS, playing a game, streaming HD video or during charging.

The system and the iPhone 6 battery generate heat and because there is no fan, unlike a desktop computer, the heat can build up and it’s not normally a problem. However, if it’s consistently too hot there may be a problem. First, if you have a case on it, try removing that. Turn off the iPhone 6, stop charging it and put it in a cool place out of direct sunlight (not somewhere cold - rapid changes in temperature can be harmful).

If, once it has cooled and you’ve turned it on again, it still heats up, there might be a software issue. Try removing background app permissions for any recently installed apps (Settings/General/Background App Refresh) or even delete any apps you’ve recently installed that might be overloading the operating system.

It’s also possible to fix an overheating iPhone 6 battery by restoring your device in iTunes which resets the software.

iPhone 6 Battery Replacement Guide

If none of the above tricks, tips, hacks and pointers have fixed the issue, it might be time to look into getting an iPhone 6 battery replacement. iSmash can diagnose and replace your battery while you wait, using high quality, original parts, with a full warranty on all work we complete. However we’ve put together a guide for you to replace the battery yourself as long as you have the right tools, technical skill, and follow our safety pointers to minimise the risk of any danger from a pierced or exploding battery.

How Many mAh Is The iPhone 6 Battery?

The iPhone 6 is powered by a 1,810 mAh battery - this is less than those of the Samsung Galaxy S5, for example (2,800 mAh). It lasts approximately 35 hours (including standby) when used sparingly.

How Do I Remove The Battery From My iPhone 6?

Tools required:

  • Phillips screwdriver
  • Plastic opening tool
  • Blunt tweezers
  • Adhesive strips to apply to your new battery
  • Replacement iPhone 6 battery

IMPORTANT: Ensure you have discharged the battery power to below 25% before attempting this procedure. A charged battery can catch fire or explode if punctured.

  1. Power off your iPhone 6.
  2. Remove the two screws (either side of the lightning connector).
  3. Gently pull up the screen to separate the front panel from the rear case. NB there are several clips holding the two together.
  4. Open the iPhone 6: lift up the end with the home button, using the top of the phone as a hinge. Lift it until the two halves are at ninety degrees and lean the screen against something upright.
  5. Remove the battery connector bracket screws (1 x 3.2mm, 1 x 2.2mm screw)
  6. Remove the battery connector bracket.
  7. Lift the battery connector up from its socket on the logic board - be very careful not to also lift the socket on the logic board as you can easily break this.
  8. Next, you need to remove 5 Phillips screws to the upper right as you look at the battery - they are 3 different sizes and it is imperative that during re-assembly they are all put back in the same place they were removed from to avoid serious damage.
  9. Remove the panel that these screws were holding in place.
  10. Carefully disconnect the camera and sensor cable connector.
  11. Disconnect the home button cable connector.
  12. Disconnect the display data cable connector.
  13. Disconnect the digitiser cable connector.
  14. During re-assembly, ensure you don’t press the centre of the connector as it can bend easily.
  15. Now it is safe to separate the front and rear panels.
  16. Now you have access to the battery - peel back the adhesive tab from the bottom right edge of it.
  17. Pull the tab towards the bottom of the device - being very careful not to tear it.
  18. Pull it around the lower right corner of the battery.
  19. Now peel the second adhesive tab (on the bottom left of the battery) around the lower left corner.
  20. You should now be able to remove the battery from the iPhone 6.
  21. You will now need to apply adhesive strips on the new battery, before following the 19 steps above in reverse order to close the phone again

How To Calibrate iPhone 6 Battery?

Calibrating your new battery conditions the new cell and helps the software calculate the battery life (while also reducing the likelihood of battery percentage jumps). You should calibrate it when you fit it - but it’s also best practice to do so once every month or so.

  • Drain the battery completely (turn on audio, put the torch on, watch a film etc).

  • Once the battery dies, leave the iPhone 6 dead overnight (if you can do without an alarm!) to ensure it really is completely empty.

  • Charge the iPhone 6 to 100% and leave it plugged in for an hour or so after that.

  • Once the phone is charged, reset it.

As you can see, fitting a new battery is a technical, fiddly job with inherent risks to the integrity of your device. If it seems too complicated, why not trust the tech repair specialists and book your iPhone 6 in with iSmash? We can fit a new battery in no time at all.

If you need assistance with your iPhone 6 battery problems, simply contact iSmash and we can take care of the rest.

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