The recommendation in the Kuketz blog under point 2.4 on this topic is to completely disable A-GPS with SUPL_HOST=localhost. As info it says there:
supl.vodafone.com: Location Germany, selfhosting.
That didn’t sound to me like Google had anything to do with it. Do you think Vodafone exchanges information with Google? Would it be possible to create a possibility in the Android settings that you as a user can define SUPL_HOST yourself? I myself would then want to enter localhost. I would prefer that than Vodafone. How do Graphene, Calyx, Divest and /e/ solve this problem?
https://www.simplemobiletools.com/blog/how-de-googled-is-simpleos
SimpleOS writes about it:
Not only does the latest version of SUPL go beyond the initial purposes of A-GPS (geofencing, billing applications), the above data is being logged by Google without permission, potentially before you even put a SIM card in your phone. For that reason, we wanted to avoid using Google servers for SUPL data when using GPS. To solve this, we replaced GPS SUPL_HOST=supl.google.com with supl.vodafone.com (Vodafone) in the following files:
device/common/gps/gps.conf_US_SUPL
device/common/gps/gps.conf_AS_SUPL
device/common/gps/gps.conf_EU_SUPL
hardware/qcom/gps/msm8084/etc/gps.conf
hardware/qcom/gps/msm8960/etc/gps.conf
hardware/qcom/sdm845/gps/msm8084/etc/gps.conf
Is this just window dressing and Google still gets just as much data as if supl.google.com was still set?
What do you mean by that? Is it about “Advanced Mobile Location” (AML), which is implemented by Android with Emergency Location Service (ELS)? This would not work anyway, since Google Play Services are mandatory for this.