Boardview for the iPhone 5C logic board, supplied as a 266 KB file in .bvr format. Beyond the model, the name gives no board number, revision or regional variant, so confirm the layout against your PCB before relying on measurements. Loaded in a BVR-compatible viewer, it lets you find components by designator, highlight connected nets and identify places to probe. Technicians use it to trace power rails from the battery connector, locate shorted decoupling capacitors and check connector pinouts when diagnosing no-power, charging or display faults.
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 @SMART_PHONE_SCHEMATICS. Enginerys does not host this file.
How to open a .bvr file
Text boardview from the BoardView R family of tools, seen for Lenovo, MSI and Clevo boards.