Boardview in BVR format for the iPhone 5C main logic board, 266 KB uncompressed. It opens in boardview software that reads BVR files and shows both sides of the PCB with part outlines, designators and net names. During repair it helps you find where a rail such as the main battery line or a buck output runs, identify a missing component after a drop, and locate test pads for diode-mode measurements. Compare the board markings with the view first, because carrier variants of a model can differ in detail.
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 @cyberlanelectonik. 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.