Apple iPhone 5 logic board layout as a 264 KB BVR boardview. No board number, revision or regional variant is indicated in the name. Loaded in compatible software, it shows component outlines and nets on both board sides, so a technician can find a part by designator, follow a rail to every load and locate test points for diode-mode or voltage measurements. Typical jobs include short hunting, backlight and touch faults and restoring knocked-off passives. Verify it is an iPhone 5 board and not a 5C or 5S before use.
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 @GENERAL_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.