iPhone 6s plus sim card issue

Hello,

A friend of mine gave me a broken iPhone 6s plus, the whole screen was shattered and I replaced the screen. Now everything works fine except the sim card. when I insert my sim card into the phone it does not see the sim, when I hard press the sim tray while the sim card is inserted then the sim pops up. I ordered a new sim tray but the issue stays the same. but the weird thing is, when I place a replacement sim tray i have laying around (different color than the 6s plus) of a normal iPhone 6s into the phone, the sim pops up normally…..

anyone got an idea what this could be?

kind regards,

Dave

Youtube video where I show it:

https://www.youtube.com/watch?v=cK42sZ6k...