: Can read device info, reboot to download mode, or factory reset while the phone is in its standard "Media Transfer Protocol" state.

: Specialized functions for unlocking or resetting specific models from these manufacturers.

Changing (Country Specific Code) to unlock region-locked features. Disabling Knox or factory-preinstalled bloatware.

: Removes the Factory Reset Protection (Google Lock) on various Android brands, particularly Samsung devices, using "MTP" or "Test Mode" ( #0 #).

: Allows for a full factory reset of the device even if the screen is locked by a PIN, pattern, or password. Samsung Specific Functions :

: Standard utilities to reboot into Bootloader/Fastboot mode, install APKs, or sideload firmware updates.

While "ag-android-v4-1-latest-tested-free-tool" could refer to a few different things, it is most commonly associated with , a utility used for servicing Android devices (often specifically for Samsung or Oppo/Vivo models).