> someone controlled by Google Manufacturers that ship GMS are not controlled by Google. I think you don't know a lot about how to apply for GMS integration, i

> someone controlled by Google Manufacturers that ship GMS are not controlled by Google. I think you don't know a lot about how to apply for GMS integration, it's as easy as filling a form and passing the CTS (compatibility test suite). Google is providing some non-free files (basically apps and libraries, all sandboxed) and configuration files to manufacturers that they apply on top of AOSP (or possible extensions they did). The only way for Google to break out of the sandbox is to make a backdoor in the AOSP code, that is openly available for review. To repeat what I said to the other guy here: If you are not on a Nexus or Pixel device, Google is UNABLE to look into private app data of third-party apps (if they correctly configure the backup feature). This is possible with Signal only due to the mentioned "backdoor", making this an important issue. You are however right that the manufacturer(s) might be able to look into app's private data, but that's another issue (especially as most manufacturers are non-US companies).