No sounds coming from the speaker and mic doesn't seem to work.

So the speaker might be broken and also the mic too.

I can't even use my wired headphones because they don't have sound either (the headphones work, I tested it on another phone) so it's definitely the phone (also, when I plug in the headphone, the headphone indicator in the phone doesn't come on despite me plugging the headphones in).

The only way I can get sound out of my phone is by using a Bluetooth speaker or headphone. Any ideas on how to fix this? Thank you