Android is open source (not everything, but enough). If you have deep access with root, you can do alot of stuff. Even without, you can block specific network requests.
You need to be an experienced developer to do so, but i think that controlling the data flow is possible if it is routed over a phone.
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A Google or Apple Phone? Nothing on a Google or Apple Phone is open source.
I wouldn't do that.
Android is open source (not everything, but enough). If you have deep access with root, you can do alot of stuff. Even without, you can block specific network requests.
You need to be an experienced developer to do so, but i think that controlling the data flow is possible if it is routed over a phone.