So my friend has parents that are extremely overbearing and possibly emotionally abusive. They got mad at him and somehow blocked his phone data. The confusing part (and why I'm in this forum) is he can still make calls, though he cannot receive them, and when he calls me he has no number with no caller id and clicking on the call in the call log does nothing due to the fact I have no number for this call I was just in. Can anyone explain why this happens?

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