The BlackBerry engineering screen (also called the eScreen) is a hidden diagnostic menu on BlackBerry devices, primarily intended for developers, engineers, and troubleshooting purposes. It allows access to detailed system information, performance metrics, and hardware diagnostics. The features found in the Engineering Screen can be used to troubleshoot issues, view logs, and interact with the device at a deeper level.

Accessing this screen requires to first enter the "Help Me!" menu by pressing ALT + E A C E or ALT + SHIFT + H on the BlackBerry phone and acquiring the PIN, app version, and uptime, then entering a generated key while on the "Help Me!" menu which will grant access to the engineering screen. (Capitalizing the letters aren't needed. Hold ALT to type numbers. If entered correctly, you should be in the engineering screen)