After the iOS 18.7.9 update, the speaker does not work. There is also a slight decrease in lighting on one side of the bottom of the display. The display is original, Face ID does not work, True Tone is OK, SIM is OK, and WiFi is OK. The battery has been replaced. The speaker issue can be fixed for 1k. There is some dust on the front camera from when the battery was replaced, which can be cleaned to fix it.