Samsung SM-G355H schematic PDF of 3.21 MB; the HrM suffix in the name is not explained and likely marks a document section. The SM-G355H is the Galaxy Core 2 smartphone. Expect circuit diagrams covering the power management, charging path, baseband and user interface sections that help trace a fault from the battery connector to the affected component. Open it with any PDF viewer and confirm the exact model code on the device sticker before measuring against the drawings.
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 @mobile_jump2. 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.