Samsung SM-A700H archive, 12 MB RAR, for the Galaxy A7 variant with that model code. The name does not list contents, but service packages of this size for Samsung phones typically include schematics, board layouts or a service manual. Unpack it to check what documents are inside and which program each format needs. Such material helps trace power rails, locate test points and identify components on the main board. Verify the exact SM-A700H code on your phone, since other A700 variants can differ.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematicslaptop. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.