Chosen Solution
Got an iPhone 6s with some water damage. Managed to get back everything to working order except for back camera. Since it was missing PP2V85 I removed U3200 which had suffered a short with VccMain. Unfortunately CAM_EXT_LDO_EN seems to be missing too, although the pin is shiny and undamaged. Does CAM_EXT_LDO_EN show up only when camera cable is connected or should I just say goodbye to the main camera ?
Hey Arbaman, what do you mean exactly when you say “CAM_EXT_LDO_EN seems to be missing too”? Do you mean the signal or something physical? I don’t remember probing that before but looking at the schematic, it is connected to a UART RTS (Request To Send) pin on the CPU (maybe they ran out of GPIO’s!?). Normally, an RTS will go high to initiate a conversation so that’s probably what they do here as well; RTS goes high and enables U3200. If you not seeing a signal, you could always pull it high via PP1V8 (or use a DCPS) to see if that enables the camera.
