I have an S21 plus that I've been considering upgrading because the diagnostics function in settings says my Battery is weak also the adhesive on the back failed and the back is completely off. Also the fact that software support ends on the s21 plus this year. Ive cleared my phones cache and it still says the same thing. I found a way to find out the exact battery health (*#9900#) and it's at 87 percent. That seems pretty good to me. Is it saying it's weak because as far as I know the battery is original and therefore old or is there something else I dont know about? As far as I can tell the battery isn't swollen.
@Kath01 Since the back is coming off and the battery diagnostics indicate that the battery has an issue, I would be inclined to think that your battery is failing and swelling. The swelling is typically what causes the back cover to come off.
You need to get the phone into repair for diagnostic and repair.
Hello. I can definitely see how this would be concerning!I sincerely apologize for any inconvenience that this is caused you! We do have a specialized team that would be happy to help you with this situation. I would encourage you to reach out to this team directly to get this matter resolved.
Please be aware, this team will be asking for specific information, such as your name, street address, email, place of purchase, bill of sale (to validate warranty status), and will request any documentation related to this incident. The additional documentation could include photos of an injury/damage, receipts or estimates of repairs, and/or medical documentation, etc.
The quickest way to reach this specialized team is by calling 1-800-726-7864.
Alternatively, you can reach out to our Facebook or Twitter Support teams to set up a call back.
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