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Could you explain what that means, for someone unfamiliar with phone tech or the US approach to activation? Naively I would think the SIM card functions as a s

Could you explain what that means, for someone unfamiliar with phone tech or the US approach to activation? Naively I would think the SIM card functions as a sort of API to the carrier network, and as long as a phone supports that API, carriers should not know or care what type of phone it is. They shouldn't even know if the SIM has changed phones, so from that perspective, there should be no such thing as 'activating' a phone, only a SIM (though I don't know what exactly is meant by 'activating' in the first place). Any deviation from this reeks of carrier abuse.

PaulHoule 5y ago
Carriers can decide what phones are allowed to connect to their network and it is their right. Performance and whether the network works at all is a holistic function of the base stations and all the phones attached to them. If a phone has a bad radio it could affect hundreds of other customers.
- chuckee 5y ago
  > If a phone has a bad radio it could affect hundreds of other customers. I still don't understand - what does 'activation' do, how does it prevent a bad radio from interfering with other customers? Why not kick phones with bad radios off their network, regardless of what model they are? Do they activate every phone with a conforming radio, or are they more picky? If they are more picky - why? How can they even distinguish one conforming phone from another? If a phone conforms to the network rules, what reason do they have for caring what sort of phone it is? > and it is their right. They are near-monopolies providing an essential service using public airwaves. Lets not pretend they're equivalent to Moe's tavern down the street.
selfhoster11 5y ago
This is likely something CDMA specific that doesn't get seen in Europe.
- PaulHoule 5y ago
  Yeah, a GSM phone would have to be really broken if it was going to trash more than two timeslots (which would happen if the clock told the wrong time.) A CDMA phone with bad power management could wreak a lot more havoc.

PaulHoule 5y ago

Carriers can decide what phones are allowed to connect to their network and it is their right. Performance and whether the network works at all is a holistic function of the base stations and all the phones attached to them. If a phone has a bad radio it could affect hundreds of other customers.

chuckee 5y ago
> If a phone has a bad radio it could affect hundreds of other customers. I still don't understand - what does 'activation' do, how does it prevent a bad radio from interfering with other customers? Why not kick phones with bad radios off their network, regardless of what model they are? Do they activate every phone with a conforming radio, or are they more picky? If they are more picky - why? How can they even distinguish one conforming phone from another? If a phone conforms to the network rules, what reason do they have for caring what sort of phone it is? > and it is their right. They are near-monopolies providing an essential service using public airwaves. Lets not pretend they're equivalent to Moe's tavern down the street.

selfhoster11 5y ago

This is likely something CDMA specific that doesn't get seen in Europe.

PaulHoule 5y ago
Yeah, a GSM phone would have to be really broken if it was going to trash more than two timeslots (which would happen if the clock told the wrong time.) A CDMA phone with bad power management could wreak a lot more havoc.