napoleonsdumbcousin

Ah, ok I understand.

It is a replacement of SMS and MMS on cellular networks with more modern features

https://en.wikipedia.org/wiki/Rich_Communication_Services

I have no deeper knowledge of this topic, but to me it seems like Wikipedia is disagreeing.

No one enables it to “give Google data”, they use it to get apps to work that use it as a dependency.

Well yes of course, but you are still giving away your data, regardless of intention. And a privacy feature of GrapheneOS is that it redirects location data requests to the OS by default. Thats why you have to disable it in the settings if you want Google to have this data.

RCS is neither.

AFAIK it is specifically meant as a replacement for SMS and is used with regular pre-installed SMS Apps.

But if you’re using it for privacy-from-Google purposes you probably don’t care about those.

Correct, I am not using GrapheneOS to then give my data to Google willingly. Kinda defeats the purpose I would say. I think it is the right thing that this is blocked by default and you have to actively turn it on. (Edit: I am assuming that you are talking about the fact that location data gets redirected to GrapheneOS by default, which can be changed in settings)

also RCS

Is this a country-specific topic? I don’t know anybody who still uses SMS/MMS to communicate. Everybody uses WhatsApp or Signal where I am.

As someone who uses GrapheneOS with sandboxed GooglePlay on his only smartphone (with daily usage for years at this point): I don’t know what kind of adjustment you are referring to. I never had to adjust to anything, because I never encountered anything that GrapheneOS couldn’t do that stock Android could. Follow the installation process and after that the phone behaves like a regular phone, except you have way more options regarding security and privacy.

Is your friend trying to use GrapheneOS without any Google services maybe?

Until they get forced to implement an off-switch, you can block them with uBlock Origin in the meantime.

Despite commonly using the term “GPS”, people are usually not using GPS directly, but GNSS, which includes satellite systems from USA (GPS), Russia (GLONASS), China (BDS) and the EU (Galileo). https://en.wikipedia.org/wiki/Satellite_navigation