On what devices? The problem with these kind of features (e.g.: huawei's knuckle touch) is that unless you have a large enough device support, the developers ca

On what devices? The problem with these kind of features (e.g.: huawei's knuckle touch) is that unless you have a large enough device support, the developers can not rely on it. 3D Touch will have a massive support in a few iPhone generations.