Chosen Solution
How can you reattach the small proximity sensor to the flex cable. It pulled apart during removal. if it is impossible to reattach it is there any issues with ordering a new sensor and ribbon? I was under the impression that the sensor should match the phone it’s removed from?
It’s pretty much impossible to re-attach the proximity sensor once it’s broken off from a front camera without specialised rework station tools. There should be no issues using a replacement front camera assembly as they work with every iPhone 6s plus. iFixit does sell the replacement front camera and has a guide on how to replace it: iPhone 6s Plus FaceTime Camera and Sensor Assembly Replacement iPhone 6s Plus Front Camera and Sensor Cable
