My phone has charge accumulation problem

There are a few possible reasons why your Samsung Galaxy M31 is having trouble charging and displaying a temperature sign. One possibility is that the charging port is dirty or damaged. This can prevent the charging cable from making a good connection, which can lead to slow charging or no charging at all. Another possibility is that there is a problem with the battery. If the battery is damaged or worn out, it may not be able to hold a charge. Finally, it is also possible that there is a problem with the software on your phone. A software bug can cause all sorts of problems, including charging problems.

Here are a few things you can try to fix the problem:

• Clean the charging port with a can of compressed air or a toothpick.
• Try using a different charging cable and charger.
• Restart your phone.
• Update your phone's software to the latest version.
• Perform a factory reset on your phone.

If you have tried all of the above and the problem is still persisting, then it is likely that there is a hardware problem with your phone. In this case, you will need to take your phone to a qualified repair technician.

iFixit has a number of resources that can help you fix your own phone, including repair guides, parts, and tools. You can also check out their online community for help and advice from other users.

By fixing your own phone, you can save money and help reduce electronic waste. This is in line with iFixit's mission to create a more sustainable world.