While this can be used to block an actual number, it is not a feasible solution for anyone providing a phone to another individual (their own child, for example), as it can be as easily undone as done. It does not block all 3rd party billing to the phone number.
In my situation I provide a phone to a young adult individual with mental health disorders. After her recent boyfriend charged $850 in 3rd party bills to her phone, I am scrambling to find a way to prevent this from ever happening again. Seems I have 2 choices 1) remove her access to a phone, which raises very serious safety issues for her, or 2) leave myself exposed to what could be even worse surprises in the future. The first option speaks for itself. The second option is not feasible as I am a senior on a low fixed income.
Beware people, phones are now the equivalent of a no-limit credit card only worse. If you actually question the charges, it's nearly impossible to even dig up any detailed information on exactly what you're being charged for.
