iPhone panic 0x73, 0x1b4: Ambient light sensor

Panic codes: 0x73, 0x1b4

How to fix it

The panic points to the ambient light sensor (auto brightness), on the front top flex.

1. Test with a known-good part.

2. Diode-mode the FPC connectors to find any fault.

By Hasan Patel, iPhone Fixer. Check your own panic