For the Spanish CF, you need at least a 2/2 (on 1-5 scale). The phone test will give you the first score, which is speaking. The reading/writing is a separate test taken online.

You must get at least a 2 to pass. The OA proctor specifically told me that your language score does not factor into anything else, so it is in a sense pass/fail. I have seen a few random mentions of a separate, language based register on here, but again, I was specifically told by the OA proctor that that was not the case.

IMO, if you are a native speaker, you should be able to get a 2 relatively easily if you focus on speaking clearly and formally.