Retrofire
Member
- Jul 4, 2019
- 170
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In the US anyway, many carriers allow the user to block numbers from the account settings app, and this is an entirely different process than a simple number block from the user's contact list. My provider's tutorial is right here:
This blacklist is applied at the Policy and Charging Rules Function node (PCRF is 4G...The same node may have different names in 2G/3G/5G, but still has an equivalent.) and is utterly unreliant on APIs or SIM, and absolutely does follow phone swaps as the block is tied to the number.
I have an ex-wife on mine, and it has continued to work through three iPhone updates, thankfully.
Further, not all US carriers are GSM...The largest (Verizon) is CDMA (or was until a couple years ago.) SIMs are not a factor there.
IIRC, Jaye goes so far as to raise that very objection..."I've had several phones since then," to which Tara says "the block is at the account level."
This blacklist is applied at the Policy and Charging Rules Function node (PCRF is 4G...The same node may have different names in 2G/3G/5G, but still has an equivalent.) and is utterly unreliant on APIs or SIM, and absolutely does follow phone swaps as the block is tied to the number.
I have an ex-wife on mine, and it has continued to work through three iPhone updates, thankfully.
Further, not all US carriers are GSM...The largest (Verizon) is CDMA (or was until a couple years ago.) SIMs are not a factor there.
IIRC, Jaye goes so far as to raise that very objection..."I've had several phones since then," to which Tara says "the block is at the account level."