Default [Q] Problem after changing Jiayu G3 TouchScreen


Yesterday I changed a Jiayu G3 touchscreen, but I had a problem removing screws, it has 6 and one was hidden, I thought it was in a place but it was 3mm right where it was supposed to be, so I dug and I remove a piece from the mainboard, now the phone works but I cant make calls or use G3 network.

I've attached a photo showing the piece I removed, what is that piece and where I can buy one like that?

Thanks in advance
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