iPhone 5S boardview for the WCDMA variant, provided as a 270 KB .bvr file. The WCDMA tag indicates the cellular version of the board, whose radio section can differ from other 5S models, so check which variant you hold. No board number or revision is given. In boardview software you can locate components, highlight nets and find test points, making it practical for tracking shorts, checking power rails around the PMIC and finding small passives lost during repairs. Compare the layout to the actual board before lifting parts.
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.