Repair Guides

Samsung Galaxy S20 Ultra 5G Battery Replacement!


This transcript comes from a pre-written script; it may not perfectly represent the finished video. For detailed repair instructions, consult our Samsung Galaxy S20 Ultra battery replacement guide.

If the battery in your Galaxy S20 Ultra has gone bad, but you’re not ready to part with the phone yet, you’re in the right place! This video will show you how to replace the battery in your S20 Ultra!

Required tools

For this repair you will need:

And some high concentration isopropyl alcohol. We recommend over 90%! And for parts, you will need a replacement battery and if not already applied, some adhesive to hold the new battery down. You will also need adhesive for the back cover when closing your phone.

Tips and warnings

We also recommend using our Magnetic Mat so that you can keep track of screws and write down notes during your repair, And following the guide on On the guide you can read tips and tricks that will help you throughout the repair. Before you begin, make sure that your battery is drained to below 25%. This reduces the risk of fire if the battery is damaged during the repair.

WARNING: If your battery is swollen, take appropriate precautions and do not heat your phone.

Removing back cover

Start by heating up an iOpener and place it on the bottom edge of the phone’s back cover. Leave it there for about two minutes. Then apply a suction handle on the spot you just heated and pull up with a strong steady force. This will create a gap between the cover and the frame for the next step.

WARNING: Do not apply excessive force with the pick while cutting the adhesive during the next few steps, or you might crack the back cover glass.

When you see the gap, grab an opening pick and insert the point into the gap so that the adhesive doesn’t re-adhere. This may take more than one attempt due to tight tolerances. If so, apply more heat.

Once you have your pick inserted, slide the pick back and forth along the bottom edge making sure you slice through all the adhesive. Leave a pick in the seam so that the adhesive doesn’t reseal.

Grab your iOpener again and heat the left edge of the back cover this time and insert a pick in the middle of the phone and slide it towards the bottom. When you are done cutting all the adhesive there, leave the pick at the bottom edge and then grab another pick and slide it to the top edge.

Now repeat the same process on the right edge.

Once that is done, use your iOpener to heat the top edge and use your pick to slice through the adhesive there. When slicing around the corners at the top, be careful because the curved edge is very susceptible to cracking—be very gentle.

Once you have released all the adhesive, you can remove the back cover.

Removing wireless charging coil

Now go ahead and use your spudger to disconnect the wireless charging coil connector. Use a pair of tweezers to gently peel the wireless charging coil up and away from the phone.

Removing motherboard bracket

Grab your driver and remove the five phillips screws securing the motherboard bracket. Then with your tweezers unclip and remove the bracket.

With your spudger, disconnect the battery connector, and then use your driver to remove 5 more Phillips screws securing the loudspeaker and lower midframe. Insert your tweezers into the notch at the top left corner of the lower midframe and pry up to release the clips holding it in place. It should come right out.

Next, disconnect the main and auxiliary cables from the daughterboard. And repeat the process for the two cables on the motherboard. Now you can safely peel those away.

Pry and disconnect the 5G antenna cable from the left-side motherboard. And finally disconnect the main display flex cable. Gently peel up and move the display cable and 5G antenna cables away from the motherboard and battery.

Removing battery

Now onto the battery. Grab your isopropyl alcohol and apply it to the gaps between the battery and the frame on all sides. Make sure you tilt the phone in different directions, so that the alcohol  spreads out underneath the battery as much as possible. This will take about two-to-three minutes for the alcohol to start softening the adhesive.

Apply a suction handle to the center of the battery and hold onto the top and bottom of the phone. Now firmly pull up on the suction handle. If the battery does not move, add more isopropyl alcohol and try again. When the battery does begin to lift, keep lifting until it is separated from the phone.

Cleaning and prepping phone for reassembly

Before you install a new battery, you will need to remove the old adhesive in the well using some isopropyl alcohol and the flat edge of a spudger, if you need it.

Installing new battery

To install your new battery, place some adhesive in the well, then lay the battery on top and press it into place. If your battery came with pre-applied adhesive, you can just remove the liner and place it in the well.

Connecting motherboard cables & testing phone

Flip the display cable and 5G antenna cable over and reconnect both to the motherboard. Then reconnect the main and auxiliary cables on both the motherboard and daughterboard, making sure they are oriented the correct way. Go ahead and connect the battery cable but, before moving on, make sure that the phone powers on and everything is working properly. If it is, power off your phone and disconnect the battery again.

Reinstalling loudspeaker, connecting battery, installing motherboard bracket and wireless charging

Now go ahead and re-install the loudspeaker and screw it back into place. You can now safely reconnect the battery. Next, lay the motherboard bracket back into place and and re-install the screws securing it to the phone. Grab your wireless charging coil and connect it first, so that it is properly aligned and then you can press it down into place.

Closing phone

Before you close up your phone, be sure to apply new adhesive to your back cover. We have a video that walks you through this process linked in the description below.

Lay the back cover on to your phone and press it firmly in place, then be sure to set some weight, like a book or a toolkit, flat on top of the phone for at least 30 minutes so that the adhesive seals tight. Once your phone is sealed, be sure to calibrate your new battery using our guide over on ifixit .com, linked in the description below! Happy fixing!