Sorry for the late reply, but these are rules from the CTIA, not the FCC that I am referring to. The CTIA being an industry body for telecoms in US.
(Even later reply) Ah I see. I wasn’t familiar with the CTIA. It’s good to know that there are best practices that go beyond the FCC.
(Even later reply) Ah I see. I wasn’t familiar with the CTIA. It’s good to know that there are best practices that go beyond the FCC.