Second copy of the iPhone 7 Plus Intel modem boardview, BVR format, 13.8 KB, apparently identical to the other file of the same size. Such a small size for a full phone board view is unusual, so open it in a BVR-compatible viewer and verify that both layers and net names display before relying on it. It applies only to 7 Plus boards fitted with the Intel baseband, not Qualcomm units. Used properly, it helps find parts, follow rails and locate pads for measurements during board-level repair.
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.