ZDNet – “Enter these short codes into your phone’s dialer to unlock new menus, screens, and features to try. These codes work on both Android and iPhone unless otherwise noted as device-specific. A few are carrier-specific, however, meaning they’ll only work if you’re on a particular mobile network (like AT&T, Verizon, or T-Mobile). And fair warning: A handful of the codes can make big changes or even wipe your phone, so read carefully before typing them into your keypad…Entering *#06# into your iPhone’s dialer and pressing the green call button will display your device’s unique identification number, known as the IMEI, along with your EID — a unique 32-digit serial number found on devices that support eSIM technology. If you have a dual SIM or eSIM phone, you’ll see more than one IMEI listed. This number is often needed when reporting a stolen phone, checking warranty status, or unlocking your device for use on another carrier…” [h/t Pete Weiss]