BVR boardview of the iPhone 7 logic board, 364 KB. The name does not say whether it covers the Qualcomm or Intel modem version, and the two layouts differ near the baseband, so compare it with your board before trusting that area. Open it in a boardview viewer supporting BVR to search designators, highlight nets and see test points. Typical uses include tracking down the audio codec fault, a shorted capacitor on a main rail, or missing components around the charging and display connectors.
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.