Cellular network section of the Samsung Galaxy A02s (SM-A02S) schematic in PDF format, 3.70 MB. It should cover the RF transceiver, power amplifier modules, antenna switches, filters and the supply rails behind them. Technicians open this page for no-service, emergency-only or weak-signal complaints, tracing the path from antenna contacts and checking voltages. Regional A02s variants may use different RF bands and parts, so confirm the model code on your device before replacing components using this drawing.
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.