Wifi low signal after housing replacement

Hi guys i was changing the housing of this iphone 12 and after i finished my job, I checked to see if there were any issues. Everything working fine except the wifi, which has a very low signal. It doesnt show any of them, and to show one and connect to it I have to be as close as possible to the router. Any of you have some toughts?

Wifi was working before house swapping.