If you cannot find the number in your phone's settings, you can check the card itself. First, turn off your phone. This is very important. Next, find the SIM card tray. It is usually on the side of the phone. You might need a small tool to open it. This tool often comes with the phone. Gently press the tool into the small hole on the tray. The tray will then pop out. Carefully pull ou... b2breviews.club