If you’re having trouble locating the SIM card number on your iPhone, don’t worry – it’s actually quite easy to find. To do this, simply eject the SIM tray by inserting a paperclip or SIM eject tool into the small hole next to the tray. Once the tray is ejected, you’ll see the SIM card itself, along with a series of numbers printed on it. The SIM card number is usually located towards the bottom of the card, and it is typically a 19- or 20-digit number.
By knowing how to find the SIM card number on your iPhone, you can easily provide this information to your carrier when activating a new line or troubleshooting any connectivity issues. This number is unique to your SIM card and is used to identify your account with your carrier. So next time you need to access this number, simply follow the steps above to quickly locate it on your iPhone.