Samsung archive covering the A750F, A750FN, A750G and A750GN variants, model codes of the Galaxy A7 2018 smartphone family, about 14.8 MB in zip form. The name does not say whether it holds schematics, layouts or service documents, so inspect the contents first. Material like this helps trace power rails, locate components and test points, and check for shorts on the main board. Match the model code on the device label to the right variant, since regional versions 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 @Schematic_mobile_iran. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.