They haven't communicated with me yet. I brought my phone to the service center last September 4 and they said it will take about 5-7 business days before they give me their diagnostic report. But my phone is still under warranty so I'm hoping that I won't be charged.
You can talk to Apple Support and have them waive the replacement cost if your phone is out of warranty already. I've read several similar cases (out of warranty iphone 13-14 suffering from WSOD, GSOD, BSOD) and Apple waived the screen replacement fee, as long as the service center's diagnostic report proves that the phone does not have water/physical damage. You just need to keep calling them until you find a senior support who will listen. Good luck!