Network section of a smartphone schematic in PDF, part of a sectioned set of around 4.78 MB per page; the device model is not given in the name. It should cover the cellular RF front end, transceiver, power amplifiers, antenna switches and the related supply rails. Technicians rely on such pages for no-service or weak-signal faults, tracing paths from the antenna contacts to the transceiver and checking for missing voltages. Make sure the drawing corresponds to your exact model and region variant before replacing parts.
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 @phoneSchematics. 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.