Chosen Solution

I can’t get my sim card tray to fully insert into my phone. Does anyone know the cause of this or how I can fix this problem?

Usually damaged pins from the Sim card reader or broken plastic from the Sim tray causes this problem. Have you tried a replacement Sim tray just in case? If Sim needs to be replaced the phone would need to be opened up and the tray replaced by someone that does micro-soldering.