This tiny app can detect the CPU chipset of your iPhone. For iPhone 6s / 6s Plus, it can also detect the manufactory (TSMC or Samsung) of A9 chip.
The compiled binary file that I released would ask you whether you want to help me improve the statistics by uploading the chip model, device model and hashed (MD5) SN number to my server (since I don't want to get duplicated records). All of the information is for statistics only. Therefore, I can't identify you from it.
https://github.com/hirakujira/CPU-Identifier-OSX/releases
Plug your iPhone to your Mac, then open this app. If it can't detect your device, try to restart the app or replug the cable, or click "Trust" button on your iPhone to trust your Mac (if the iPhone is activated).
You can detect the CPU manufactory even when the device is not activated.
This is released under the GPL v3.
Most of the code is based on recboot. So the credit must go to sebastienpeek https://github.com/sebastienpeek/RecBoot-for-Mac