To remove the SIM card from your iPhone, you'll need to eject the SIM card tray with a special tool or paperclip.
If you need to find out your iPhone's carrier without a SIM card installed, you can do so through the Settings app.
Watch the transformation of damaged smartphones, including an iPhone XR, OPPO A16, and iPhone X, as they are expertly restored into high-end models like the iPhone 13 Pro.