Introduction

Is your battery running out way too fast? Are you forced to recharge your S7 more than once a day? This guide will show you how to remove the tired old battery in your S7 and replace it with a new one.

Note that the video guide recommends removing the SIM card. This is not necessary, but won't negatively affect repair if you do remove it.

Before disassembling your phone, discharge the battery below 25%. A charged lithium-ion battery can catch fire and/or explode if accidentally punctured.

If your battery is swollen, do not heat your phone. If needed, you can use a dropper or syringe to inject isopropyl alcohol (90+%) around the edges of the back cover to weaken the adhesive. 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.

Video Overview

Opening your phone will compromise its waterproof seals. Have replacement adhesive ready before you proceed, or take care to avoid liquid exposure if you reassemble your phone without replacing the adhesive.
  • Opening your phone will compromise its waterproof seals. Have replacement adhesive ready before you proceed, or take care to avoid liquid exposure if you reassemble your phone without replacing the adhesive.

  • Apply a heated iOpener to a long edge of the phone for about two minutes.

    • You may need to reheat and reapply the iOpener several times to get the phone warm enough. Follow the iOpener instructions to avoid overheating.

    • A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the OLED display and internal battery are both susceptible to heat damage.

I used a heat gun and heated it a little too much. The color of the rear glass is just a sticker on a clear cover. Due to this I tore the sticker off. Now the back cover is see through, which isn’t a bad thing but the repair was for a customer.

Kevin Bishop - Reply

When the back panel is warm to the touch, apply a suction cup as close to the heated edge of the phone as you can while avoiding the curved edge.
  • When the back panel is warm to the touch, apply a suction cup as close to the heated edge of the phone as you can while avoiding the curved edge.

    • The suction cup will not make a good seal on the curved portion of the glass.

    • If the phone's back cover 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.

  • Lift on the suction cup and insert an opening pick under the rear glass.

    • The rear glass can break if you use too much force or attempt to pry with metal tools.

    • Due to the curved glass, you will be pushing up, rather than inserting parallel to the plane of the phone.

    • 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.

    • Optionally, once the pick is inserted, you can add a few drops of isopropyl alcohol into the gap to help weaken the adhesive in the following steps.

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  • Once you have the pick firmly inserted into the glass, reheat and reapply the iOpener to soften the adhesive.

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  • Slide the opening pick down along the side of the phone, separating the adhesive.

  • Go slowly so that the tip doesn't slip out of the seam. If sliding becomes difficult, reheat and reapply the iOpener.

  • Leave the pick in place and grab a second pick as you proceed to the next step. Leaving the pick inserted can help prevent the glue you just separated from re-adhering.

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  • Repeat the previous heating and cutting procedure for the remaining three sides of the phone.

  • Leave an opening pick in each edge of the phone as you continue to the next to prevent the adhesive from resealing.

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  • Lift the glass and remove it from the phone.

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  • To reinstall the back cover:

    • First use tweezers to peel away any remaining adhesive from both the back cover and the phone's chassis.

    • Then, clean the adhesion areas with high concentration isopropyl alcohol (at least 90%) and a lint-free cloth. Swipe in one direction only, not back and forth. This will help prep the surface for the new adhesive.

    • Be sure to turn on your phone and test your repair before installing new adhesive and resealing the phone.

    • Replacement adhesive comes in a pre-cut sheet to match the exact contours of the back cover. If that's not available, you can use a high-bond double-sided tape, such as Tesa 61395. Be aware that this leaves gaps that are vulnerable to liquid intrusion.

    • After installing the rear cover, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond, such as by placing it under a stack of heavy books.

  • If desired, you may reinstall the back cover without replacing the adhesive. Remove any large chunks of adhesive that might prevent the back cover from sitting down flush. After installation, heat the back cover and apply pressure to secure it. It won't be waterproof, but the glue is usually more than strong enough to hold.

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  • Remove the twelve 3.5mm Phillips screws.

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  • Insert the tip of a spudger into the small notch on the left side of the antenna assembly, and pry the assembly up and out of the frame.

  • Remove the antenna assembly.

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  • Use the flat end of a spudger to lift the charging coil assembly out of the phone.

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  • Use the flat end of a spudger to pry up and remove the loudspeaker assembly.

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  • Use the flat end of a spudger to disconnect the battery connector.

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  • Prepare an iOpener and apply it directly to the battery.

  • Apply the iOpener for at least a minute to soften the battery adhesive.

  • Alternatively, apply some isopropyl alcohol under each corner of the battery and allow it to penetrate for several minutes to help weaken the adhesive.

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  • Use an opening pick to pry up the battery from the bottom.

    • You will be prying against the case directly above the daughterboard and antenna cables. Pry carefully to avoid damaging either of these components.

    • You may need to reheat and reapply the iOpener repeatedly to further soften the adhesive. The adhesive is tough and it may take a few tries to get the pick started under the battery.

  • Try your best not to deform the battery during this 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.

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  • Slide an opening pick up the side of the battery to break apart any remaining adhesive.

  • Lift the battery out of the case.

  • 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:

    • Remove any remaining adhesive from the phone, and clean the glued areas with isopropyl alcohol and a lint-free cloth.

    • Secure the new battery with pre-cut adhesive or double-sided adhesive tape. In order to position it correctly, apply the new adhesive into the phone, not directly onto the battery. The adhesive should go around the perimeter of the battery compartment, but not in the rectangular cutout in the center (which is actually the back side of the display).

    • Press the battery firmly into place for 5-10 seconds.

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Conclusion

To reassemble your device, apply adhesive to the back glass and follow these instructions in reverse order.

64 other people completed this guide.

Sam Lionheart

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20 Comments

After this is it still waterproof?

Edgar Rodríguez García - Reply

Sooooooooo why exactly did Samsung make it impossible to open the phone?

Dan Laemmerhirt - Reply

The display is coming off instead of the back panel. Do you have any suggestions if this happens?

scottrape - Reply

How much time do I hit to open back panel? I almost hit 10min using hit gun but It didn't open at all.

Jay - Reply

This was one of the most difficult repairs I have done, but it worked. First off I absolutely could not get anything except a tiny Flathead screwdriver wedged in to the glass to pry it up, which cracked the glass even more than it already was, but thankfully I was replacing the back glass as well. The battery was also glued in unbelievably well, and the battery ended up bending pretty bad when I pried it out, even with a lot of extra heat.

Overall a massive pain in the rear, but I got it all working properly now thanks to the video. I used a Wagner heat gun for this, I don’t think a hair dryer would be sufficient!

Eric Vardin - Reply

I was a bit concerned cause I was using a 300w heat gun instead of the big one in the video, but patience paid off. One tip for anyone else is to make sure the battery is at the TOP of the cutout for it, my connector almost didn’t reach. Nothing broke, phone is on and running, only concern is that I didn’t get all the old glue off, so it might not be water resistant anymore.

Note: Much harder with a screen protector, ended up needing to remove mine and now it’s got dust under it. Luckily, that’s an easy fix, just annoying.

Brian Kurtz - Reply

I really wish she would show how to reassemble the phone. How hard is it to work with the new adhesive? I also wonder about the waterproofing after this is complete.

Todd Cooper - Reply

Repair was relatively easy. The problem was with the ifixit-purchased battery which ended up swelling and cracking the rear glass. The battery purchased through them currently lasts 3 minutes off of the charger.

Matthew Martin - Reply

I feel the same way Todd. The video should show you how it goes back together as well, because I bet thats the hard part.

Marc Gale - Reply

I accidentally jabbed the old battery rather hard, pierced it. And then that battery became amazingly very super hot. I’m up where winter is cold, and I put the battery out on my driveway lest it light something on fire. Was still hot as !&&* 20 minutes later. Now I understand why they say we should never put these things in the trash or a landfill cuz they could start a fire.

David Abbott - Reply

I replaced the battery ok and the phone worked ok. Plugging the charger in, the phone reports charging - but it isn’t and the charge decreased until the phone turned off. I put the old battery in, but it is in the same state - phone reports charging, but charge is decreasing. Any ideas on what is damaged or I should replace?

Jim Logan - Reply

The guide was good but incomplete. It would have nice to have a little more info on removing the adhesive on the back panel and how to best reapply it. Since this was my own phone I was extra careful but found reapplying the back panel adhesive the hardest part. Not sure if the phone is pushing out in the top left corner or the adhesive is not doing its job. All parts and tools were purchased at iFixit.Com. I used a 800w heat gun and the iSlacks did not work. I cranked up the heat and opened case with my iPhone suction cups. Very cool to know that my apple tools can be used on an Samsung phone…lol…Wow that adhesive was strong. So what do you guys think, should I reheat new adhesive, get it soft then push down firm in that corner to get it to seat better???

Brian - Reply

Just did a successful battery replacement. The back is A LOT more fragile than she makes it look. I anticipated and bought a replacement back. Otherwise the instructions are spot on.

brookman_69 - Reply

Just finished:

I didn’t use a suction cup when taking the back off. I used a flat metal spudger and three plastic hotel room key cards (like credit cards without the bumps). I used a hair dryer and heated the phone for a minute or so. Then, when I was able to stick the spudger in right where the charging port is, I put the card in the spudgers place. After that, I was able to work my way to the left and then inserted another card when I got to the corner. As I went through, I had a pick (shaped a bit less pointy than the tip of a dart) which I would use to “cut” through the adhesive. This worked very well.

I heated it up a bit with the hair dryer and used the spudger and card and got it out without any damage.

The hardest part of this BY FAR is attaching the new battery. The ribbon cable that is attached to the new battery is slightly too short. Therefore, you need to smush the top of the new battery and its really a pain to get it in. Make sure to attach the new battery before putting it into its spot.

ploppalopp - Reply

My employer has about a dozen sales guys in the field, each with an S7. My supervisor agreed to sell me their trade-ins at carrier price. With this guide, I was successful in replacing the battery and can expect about a $150 profit. Thanks iFixit!!!

BTW, I used an iSclack, heat gun, and three picks to get the back off. Did NOT break the back glass!

JONATHAN WHEAT - Reply

An update:

The replacement battery provided to me by ifixit didn’t work. Returned it and tried another and it also didn’t work. Took it to an authorized repair shop (ubreakifix) and it worked. I would suggest that people just go to the repair shop. Saving the $20 just isn’t worth the hassle. Make sure you keep your original battery no matter what.

ploppalopp - Reply

The battery I purchased from ifixit is worse than my original battery! My old battery at least shut off at 1%, this battery shuts off anywhere from 19%-49% !!!!! I didn't do the replacement myself, a friend that owns a shop that does this type of work did it. So I know he did the job right! I'm pretty upset with this battery!!!!!!

Brady Foley - Reply

Hi Brady, sorry to hear about your battery! The battery has a one year warranty, so I suggest contacting customer support to get some help. Good luck with your repair!

Adam O'Camb -

Yeah the battery that ifixit makes needs to be improved. I highly recommend that you send your phones to samsung if you can deal with not having your phone for 2 weeks. If thats too much, just take them to an authorized repair shop.

ploppalopp - Reply

晕乎乎黄金甲解决问题的时候

andy - Reply

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