Phoenix 5 How to remove the speaker to replace it?

I have 2 Phoenix 5 phones and one is fine but the other has a fried speaker that sounds bad and pops. I mentioned it to the seller and they offered me a partial refund, which I used to buy a new speaker. On this phone, it is part of the plastic cover for the motherboard so I need to remove the broken speaker.

How would I remove the bad speaker from the plastic part? I'll take photos of the frame later, or tomorrow when I have a chance.

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