Network section of the Samsung SM-A05 schematic, packed into a 6.27 MB PDF. It covers the radio part of the phone: transceiver, power amplifier, antenna switch, filters and RF connectors. Refer to it for no-service, weak-signal or emergency-calls-only faults, to follow the RF path and find which supply rails feed the radio blocks. Any PDF reader opens it and zooming helps with dense labels. Confirm the phone is really an SM-A05 first, as other Galaxy models use different RF 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.