No SIM Card Error

I replaced a customer’s shattered back glass/frame and screen. Everything works except there’s a weird issue when I push the after market screen all the way into the frame the phone says “No SIM CARD installed”….when I lift the screen back up the service come back as normal. . The original screen doesn’t have this issue. I tried multiple aftermarket, same issue. what could cause this??

Some extra info I had another customer come to me with this issue after screen replacement at another business. I replaced her screen and the issue was still there, she claims she put a rubber band in the SIM slot and it works perfect now. Oddly Both AT&T service. I’ve used this same aftermarket on XS max phones many times but these 2 phones have the issue