Secret Menu Codes for iOS Phone Settings Field Test Menu. A Field Test Menu, also known as a Field Test Display, is mobile software that provides the user with technical details and statistics of mobile network, connection, and mobile IP address. To add Field Test Menu on iOS, follow these steps: Turn off Wi-Fi; Key in *3001#12345#* Press Call
On earlier iPhone models, go to Touch ID & Passcode. On devices without Touch ID, go to Settings > Passcode. Tap Turn Passcode On. Enter a six-digit passcode. Or tap Passcode Options to switch to a four-digit numeric code, a custom numeric code, or a custom alphanumeric code. Enter your passcode again to confirm it and activate it.
Mobile phone diagnostic codes provide information about the health and status of various components of the phone. The codes can indicate issues with the phone's battery, camera, touch screen, speaker, and more. Each code corresponds to a specific test or diagnostic function.
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iphone 11 screen test code
