PDF of 1.96 MB labelled G530-1, most likely a schematic or service document for the Samsung Galaxy Grand Prime G530 family, though the name does not state the brand or the exact regional suffix, and the -1 may mark one part of a set. Open it to confirm the device and coverage. Documents like this help trace battery and charging lines, find the PMIC and identify components by reference. Any PDF viewer opens it. Match the full model code on the phone label before relying on the layouts.
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 @esquemaseletricos. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.