After editing, re-load the config in GCam.

A config file (extension .xml for GCam 8.1) is a script that tells GCam exactly how to talk to your phone’s hardware. The best config for GCam 81 free will do four things:

However, you cannot simply download and install any GCam 8.1 APK on any Android phone. Without proper tuning, you will encounter issues like: