Samsung Galaxy S9 Plus Battery Replacement

Written By: Dominik Schnabelrauch
  • Comments: 38
Samsung Galaxy S9 Plus Battery Replacement

Difficulty

Moderate

Steps

16

Time Required

45 minutes - 2 hours

Introduction

Use this guide to replace the battery in your Samsung Galaxy S9 Plus.

Opening the Samsung Galaxy S9 Plus will damage the waterproof seals on the device. If you do not replace the adhesive seals, your phone will function normally, but will lose its water protection.

Before disassembling your phone, discharge the battery below 25%. If your battery is swollen, do not heat your phone. Swollen batteries can be very dangerous, so wear eye protection and exercise due caution, or take it to a professional if you're not sure how to proceed.

You’ll need replacement adhesive to reattach components when reassembling the device.

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    • Switch off your phone.

    • Use an iOpener to loosen the adhesive beneath the rear glass. Apply the iOpener for at least two minutes. You might want to repeat this step several times during the back cover removal.

    • The adhesive of the Samsung Galaxy S9 Plus is very strong. A hair dryer, heat gun, or hot plate may also be used if you aren't able to open the device with the iOpener. Be careful not to overheat the phone—the AMOLED display and internal battery are both susceptible to heat damage.

    I don't know how much longer should I use for the min heat gun.

    Hui Chen -

    Only heat it up so you can still handle the phone. That depends on your heat gun. Wearing (ESD-)gloves might give you some extra degrees.

    Tobias Isakeit -

    It is very very hard to remove the back glass due to the adesive… I don't know if it is possibile (at least for everyone) to remove it wothout broking the glass

    Luigi -

    This is nearly impossible without breaking the glass or risking overheating. I would say apply heat repetitively for 6-8 minutes. The very most adhesive is across the bottom so push the pry stick way in. I generally start on the rear side.

    Thomas Hayes -

    Whoah NO. It will damage the camera and other sensitive electronics.

    D Harlo -

    Heating the back is essential, challenging, frustrating and, for first-timers such as myself, seemingly impossble, but I will say don't give up...I'll have another comment later.

    cbclistener -

    I tried with the iopener but I gave in after three attempts. I then used a hairdryer and a pizza oven infrared thermometer, heating in increments. 60C did the trick and I was able to get the first pick in. Further heating was necessary to ease the rest of the back off, all to 60C.

    Chris Harrison -

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    • In the following steps, you'll be cutting through the adhesive securing the back cover.

    • The adhesive in the inside of the back cover is laid out as seen in the image.

    • You'll be slicing through the adhesive in the areas shown:

    • Thick portions of adhesive

    • Thin areas of adhesive

    • Avoid prying or slicing in this area, to protect the fingerprint sensor flex cable.

    The yellow portion labeled "Avoid prying in this area" is also pretty heavily glued. I had luck using heat to soften it, but I messed up my fingerprint sensor because the image above is mirrored - I sliced through the right side because the image says it's on the left. The fingerprint sensor cable is actually on the right (when viewing the back side of the phone) on the same side as the phone's volume control.

    Nick Tipton -

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    • If the phone's rear glass is cracked, the suction cup may not stick. Try lifting it with strong tape, or superglue the suction cup in place and allow it to cure so you can proceed.

    • Press a suction cup onto the back cover.

    • Lift the back cover's bottom edge with your suction cup, opening a slight gap between the back cover and the frame.

    • This may require a significant amount of force, but you only need to open a very slight gap with the suction cup to insert your tool. If you have trouble, apply more heat to further soften the adhesive, and try again. The adhesive cools very fast, so you may need to heat it repeatedly.

    • Insert an opening pick in the gap and slide it to the bottom right corner.

    This is the most challenging part. The suction cup can barely hold for the amount of force required...but here's a tip, especially for the first-timers like me. It's not obvious in this image, but the back, curved as it is as it attaches to the frame, is curved because the surface under the back is also curved. Therefore, using an angle for the pick that's a bit tilted up will help to get under the back, and get the cutting of the adhesive started.

    Don't let that give you too much confidence, though. Sufficient heating of the back, to make the adhesive soft enough to yield to the several picks, is essential. Go slow, if you go too fast, or don't have enough heat, you WILL break the glass...as I did. Replacements, fortunately, are easy to find and not too expensive.

    cbclistener -

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    • Insert a second opening pick and slide it to the bottom left corner.

    • Insert a third opening pick at the bottom end of the phone. This opening pick stays there during the rear glass removal procedure to prevent the adhesive from resealing.

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    • Start to slide the tip of the opening pick from the bottom left corner along the side of the S9 Plus.

    • Leave the opening pick in its place after you cut the adhesive half way up the left side of the phone.

    • Slide the opening pick from the bottom right corner half way up the frame and leave it there.

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    • Insert a fourth opening pick at the right side of the frame and slide it to the top right corner.

    • Slide a fifth opening pick along the left side of the phone to the top left corner.

    • Use the opening pick to cut the remaining adhesive under the upper part of the rear glass.

    • Don't open the phone all the way yet. The flex cable for the fingerprint reader is still connected to the motherboard.

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    • Carefully lift the side of the rear glass where the volume button is located.

    • Use the edge of a spudger to pry up and disconnect the fingerprint sensor flex cable.

    On my G965U, the fingerprint reader remained in the phone, and instead of disconnecting the flex cable from the motherboard, it was only necessary to disconnect the flex cable from the back glass where it was glued lightly

    lyellread -

    I also have a G965U model S9+, and its fingerprint read also remained in the back glass.

    Nick Tipton -

    It's easier to pop the button up than it is to reattach it when reassembling the phone. Well, I sure hope it goes better for you than it did me. (:

    Daylen Westwood -

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    • Remove the rear glass.

    • When reassembling follow this guide to replace the adhesive and reinstall the rear glass.

    • In case you want to replace your rear glass follow this guide to transfer the rear camera bezel including the fingerprint.

    Is it necessary to replace the rear glass adhesive? I have given up on water resistance, just want it to hold in one piece.

    Zachary Shaw -

    Hi Zachary,

    in order to assure that the rear glass sticks to the rest of the phone assembly you have to replace the rear glass adhesive once you removed the rear glass. However you can use a narrow and strong double sided tape, tesa tape or our precut adhesive card. All of these will do their job however as you just mentioned you will lose the water protection of your phone. Before installing all of these it is very important to remove the old adhesive backings (for example with high isopropyl alcohol 90% or higher).

    Sadly it's not possible to replace the rear glass without new adhesive.

    Dominik Schnabelrauch -

    Is the L shaped stocker with the three holes(first pic in step 2) in it essential? It came off when i was using iso to get the adhesive off. Just wanna know before i put the phone back together.

    Thanks

    Bob

    Bob Erto -

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    • Remove the nine 4 mm Phillips #00 screws.

    Don´t forget to unscrew the two screws on the left side (one near the battery, and one near the edge).

    Janny 4real -

    My s9+ NFC screws in this step are different sizes most are the same except one is shorter and coloured black and another is just shorter. The phone will not charge now, how can you find out which screws go where?

    H8redflip -

    11 screws need to be removed here. Watch the video to confirm the remaining 2.

    Nick Tipton -

    The 9 screws shown won't let the bracket up unless you finish with the 2 more screws. (near edge and bottom of the bracket).

    Daylen Westwood -

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    • Insert an opening pick under the right side of the plastic cover containing the NFC antenna and charging coil.

    • Flip the opening pick sideways to lift the cover out of its plastic clips.

    • Work your way around the plastic cover, prying up to release the remaining clips.

    I used a pointed metal spudger to pop that piece. The picks were more difficult here. There's an arrow that points the spot that needs to be opened.

    Daylen Westwood -

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    • Remove the plastic cover containing the NFC antenna and the charging coil.

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    • Use the flat end of a spudger to pry up and disconnect the battery flex cable.

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    • Use an iOpener to loosen the adhesive beneath the battery. Apply the iOpener for at least two minutes.

    • In the following step, only apply the spudger in the areas marked in red, which is where the battery adhesive is located.

    • Avoid this area. There's a gap in the mid-frame right below the battery, and you can accidentally damage the display through it.

    A hairdryer, pizza oven infrared thermometer and 60C did the trick for me.

    Chris Harrison -

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    • In case you have trouble to pry up the battery the adhesive may not be loose enough. You can apply some isopropyl alcohol under each corner of the battery and allow it to penetrate for several minutes to help weaken the adhesive.

    • Try your best not to deform the battery during the following removal process. Soft-shell lithium-ion batteries can leak dangerous chemicals, catch fire, or even explode if damaged. Do not use excessive force or pry at the battery with metal tools.

    • Insert the flat end of a spudger at the top left corner of the battery where the flex cable is located and start to pry it up.

    • Work your way down the left side of the battery and loosen the adhesive with the spudger.

    Is the Oled panel have the possibility to get damaged by applying alcohol in removing the battery?

    Laurence -

    Hello Laurence,

    there is no risk that the panel gets damaged by the alcohol. The alcohol is relatively pure and will evaporate quickly.

    Dominik Schnabelrauch -

    Hello, I replace the battery but I scratched the central part where the battery was lying on. As a result, on the screen there is a bad green permanent vertical line. I could go on for a couple of months, but there is a way to replace that part as well? Is now my phone dangerous for myself?

    simnmr69 -

    Hi simnmr69,

    it seems like you damaged your screen during the battery removal. You can replace the screen as well following this guide. However a damaged screen won't be dangerous for you when using the phone but take care to use a new and undamaged battery since a punctured or bent battery may leak dangerous chemicals or cause a thermal event.

    Dominik Schnabelrauch -

    I used glue to adhere the battery, T-7000 kind from Amazon store. I didn't put it on the glass but rather the outer edge of the battery.

    Daylen Westwood -

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    • Insert the spudger at the top right corner of the battery and pry it up.

    It took me like 25 minutes to get my battery out. I have a heat gun that was relatively helpful here but prying seemed to work as long as the adhesive was softened.

    Daylen Westwood -

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    • Remove the battery.

    • Do not reuse the battery after it has been removed, as doing so is a potential safety hazard. Replace it with a new battery.

    • To install a new battery and adhesive, follow this guide.

    Anyone know the purpose of the black piece with the holes in it? Do I need to transfer it to the new battery?

    Joe Tobin -

    It is a foam sticker and most likely for transferring heat form the battery to the NFC antenna and to the rear case. If the new battery comes with one pre-installed–lucky you, if not, don’t worry you’ll be fine, too.

    Tobias Isakeit -

    Where is a video for placement of glue stickers??

    Juron Lobo -

    or how to remove the old glue, especially from the rear of the back case lol. Otherwise the kit is very comprehensive

    Julian Davidson -

    after replacing the battery using the Ifixit kit on my S9+ and following the correct procedure for charging the new battery, its still showing up on the Samsung Members app, Diagnostics as being weak and that it needs replacing. I have charged and used the device normally for the last few days and it still fails the test. Am not impressed.

    Julian Davidson -

Conclusion

To reassemble your device, follow these instructions in reverse order.

If possible, turn on your phone and test your repair before installing new adhesive and resealing the phone.

For optimal performance, calibrate your newly installed battery after completing this guide.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Check out our Answers community for troubleshooting help.

Author

Dominik Schnabelrauch

Member since: 23/11/16

201132 Reputation

6 comments

One of the best “do it yourself” instructions I’ve ever come accross! Very thorough!!

AK Sand -

Just be careful to remember to try phone parts (such as, battery recharging OBV, Fingerprint sensor…) before closing with the new cover.

Also remember to attach the Wireless card before doing the battery test otherwise the phone will say that can’t charge because the phone is too cold.

That’s because on the wireless charger module there is the heat sensor.

Flavio -

Missed one of the most important parts: Where and how do you install the adhesive pieces? There are a lot of them and the linked article doesn't even come close to explaining it for this phone.

Jason Landon -

Good instruction, I was successful replacing the battery however I accidentally damaged the fingerprint scanner cable because the image showed above is mirrored and I sliced too far in on the wrong side.

Also, a brief note on which adhesives can/should be removed before reassembling would be very helpful.

Nick Tipton -

Re-assembly is not as straightforward as using the reverse order as above as you need to remove all the old adhesive and re-apply the adhesive supplied with the kit. It's not obvious where the upper and lower adhesive parts go - the following ifixit youtube is very useful at working out where and how to re-apply the adhesive:

How To Re-Apply Adhesive to Your Samsung Galaxy Phone! - YouTube

Chris Harrison -

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niwarko -