If you are looking for the mode used to flash files or unbrick the device, follow the instructions for .
To summarize:
adb reboot download
Note: On some A7 repacks, "Bootloader" actually triggers Download Mode. Test to confirm. how to open fastboot mode on samsung galaxy a7 repack
She needed Fastboot Mode. Every other Android phone she owned obeyed the same ritual: Power + Volume Down. But Samsung? Samsung had to be different. If you are looking for the mode used
Method B — ADB reboot (requires USB debugging enabled and ADB on PC): how to open fastboot mode on samsung galaxy a7 repack