Go to Settings > About Phone > Version and tap Build Number seven times to unlock advanced system tools.
Bitmaps are crucial because they show exactly where a trace leads on the physical board, which is necessary when a pad is torn or a track is broken. Hardware Testing Codes realme c11 schematic diagram download link
You can find downloadable PDFs and hardware solutions for the Realme C11 through the following specialized resources: Go to Settings > About Phone > Version