Cellular network section of the Samsung SM-A11 schematic, saved as a 4.33 MB PDF. It covers the RF transceiver area, power amplifiers, antenna switches, filters and the antenna feed points. Technicians use it for no service, weak signal or baseband issues, measuring the RF supply rails and locating the antenna connectors and switch components for inspection or replacement. Any PDF reader opens it; check that the PCB revision on your unit corresponds before relying on designators and layout details.
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.