Displays real-time data from the accelerometer, proximity sensor, and barometer. 🔋 Battery Status: *#0228#

Some carriers (especially in the US like Verizon) disable specific diagnostic codes by default. Dialer App: These codes often only work in the original Samsung Phone app , not third-party dialers from the Play Store. Safe Usage Tips Information Only: Use codes like freely for device specs. Avoid Settings Changes: In menus like Service Mode

: Allows you to delete junk system log files, which can help free up internal storage and improve speed. (USB Settings)

Before diving into specific codes, it is important to understand the mechanic. These codes act as shortcuts to specific software modules. Unlike downloading an app, these functions are already built into the device's firmware by Samsung and the Android operating system.