Schematic set for the Samsung SM-A307 phone, delivered as a 7.88 MB ZIP archive. Inside you should find circuit diagrams useful for tracing power rails from the PMIC, checking the charging path and USB port, and locating test points for display, camera and RF sections. The files are typically PDF and open in any standard reader. Since the name gives only the base model without a regional suffix, confirm that the board revision and variant on your unit match the diagrams before replacing components.
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 @Schematics_Mobile. Enginerys does not host this file.
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