Hi James147, Already tried to blow some dust out ? Is the device up to date? If this is the case, you probably need to replace the SIM card readers. This will be difficult as it’s soldered on the motherboard. You could do this by yourself if you have experience with micro soldering, otherwise you need to go to a local repair shop so they can repair it for you.
Are all the cables connected? I know that when the DS Lite it’s upper screen isn’t correctly seated, it will cause the same issue as you describe. Also check the motherboard to check if nothing fell off or is damaged.
If the connector has been teared, the damage is irreversible. Unless you know how to do some serious micro soldering, but it’s really difficult to fix it. And it’s unlikely that they sell those parts (maybe you can find it somewhere, but won’t be easy).
Hi! As you can see in the 3rd picture, it’s held by plastic clips. Make sure nothing is blocking and press it straight back in. Don’t push it to hard in first, to check if it will fit fine. And be careful not to break it.
I don’t think it’s the port where the battery connects to. You can try to clean it carefully. Did you tried a new battery or a used one? When you connect it to the PC, does it charge then? And is it recognised when it’s not displaying anything? Did you checked the port where you put your charger in ? Looks like it’s a motherboard related issue so far..