Depending on how well you care for your Samsung Galaxy S9, the battery will be the first component to fail after a year or two. If your phone no longer charges with a wired or wireless charger, or if it sets intermittently, it is defective. If you’ve also noticed that your device isn’t lasting as long as it used to, this is a sign that the battery has deteriorated.
Because the Samsung Galaxy S9 lacks a removable battery, you must open the device to remove it. The difficulty is not replacing the storm but removing the back cover without damaging any components inside and dealing with powerful adhesives that keep the phone together. It will take longer to remove and replace it than to replace the motherboard or other components inside.
Before we continue, if you came across this post while looking for a solution to a different issue, please visit our Galaxy S9 Help Guides, as we have already addressed some of the most common problems with this phone. We may have already published articles that can assist you in resolving the issue with your device.
What you’ll need
- Hairdryer or heat gun
- The suction cup
- small Phillips screwdriver
- Remover of Adhesives (optional)
- Prying instruments
- Samsung Galaxy S9 OEM Battery
- Original. Samsung Galaxy S9 Back Cover Sticker (optional)
How to disable the Back Cover
- Remove the SIM/SD card tray and take out the stylus.
- Heat the edges of the back cover with the heat gun until they are too hot to touch. Apply just enough heat to loosen the adhesive, and keep in mind that too much heat may damage the battery. And, when applying heat, never point the gun in a single direction; instead, move it around the edges.
- Now Put the suction cup at the bottom of the back cover.
- Lift the suction cup gently until you see a small gap between the back cover and the frame. If the back cover does not separate slightly from the rim after applying a reasonable amount of upward pressure, but if it doesn’t, you may need to use more heat.
- Insert a prying tool into the crack to prevent the glue from adhering to the frame again.
- You can now remove the suction cup after inserting the prying tool.
- Move the prying tool along the sides to loosen the adhesive, but avoid damaging any components. Also, avoid inserting the prying device too profoundly. If necessary, use more prying tools. If the phone cools before removing the back cover, try applying heat to loosen the adhesives.
- Lift the back cover gently once it is loose enough to avoid damaging the fingerprint scanner’s flex cable. Remove the flex cable to release the back cover.
How to Remove and Replace a Lithium-Ion Battery
You can now access the components inside your phone because the back cover has been removed.
- Remove the 15 screws that secure the NFC, wireless charging coil, and loudspeaker module.
- Remove the NFC and wireless charging modules and the loudspeaker module.
- Disconnect the flex cable from the battery from the motherboard.
- If you have an adhesive remover, use it to loosen the adhesive beneath the battery. If you don’t, use a gun to loosen the glue on the phone’s side. Remember that the battery is held in place by a strong adhesive.
- Detach the battery from its compartment using a prying tool. Use a prying tool with enough leverage to pry the battery out, but be careful not to puncture it. To remove the battery, use a plastic prying tool.
- Once you’ve successfully removed the faulty battery, replace it with a new one and set it properly in the compartment. The old adhesive might still work if you used heat instead of the adhesive remover to remove the battery.
- Connect the battery to the motherboard now.
- Place the NFC and wireless charging modules and the loudspeaker in place and secure them with the screws you removed earlier.
- Reconnect the fingerprint sensor’s flex cable to the motherboard.
- Remove the old adhesive from the back cover and replace it with the OEM Back Cover Sticker for Samsung Galaxy S9. If you don’t have one, use the old one. It will hold the back cover in place, but you must apply enough heat to loosen it before reinstalling it.
After completing all of these steps, it’s time to reactivate your phone. I’m hoping everything goes smoothly.