Chosen Solution
Hi everybody. I have an iphone 6s with ONLY front camera is not working. (BACK CAMERA OK) I update ios and restore phone, but the problem is still present. I check all filter (only in continuity mode) the continuity is presente. All capicitor are presente, no one is short. Somebody plz help me.. I want to asl also something for voltage checking, i can check voltage only with battery connected and power on the phone.. or must connect lcd or something else?? thanks a lot.
Take a look at page 21 of the iPhone 6S schematic, it covers the Forehead connector. There are three sections for the front camera: CAMERA POWER, CAMERA I/O and CAMERA MIPI. The power section is self explanatory. Check to insure you have continuity on the filters and no shorts to ground (you have already done this!) and then check the voltages. You don’t need the camera connected. If the power is good, then check, in diode mode, the I/O section. This is the control/communication between the camera and the CPU (AP…Application Processor). You should compare this to a known good device but in the absence of that, look for “normal” values (~.250 - .600). Finally, check the MIPI section. This is the actual data coming back from the camera. These are the square filters next to the connector. An easy way to accomplish all of this is to probe the FCAM connector and compare values to a known-good device or ZXW.
There is probably a faulty camera or connection. There is not much you really can do besides replacing the front camera/speaker assembly
