The sim card is your account information kind of like a key. The phone's OS controls the output, both frequency (channel), power levels (los in town), and Tower hopping coordination.
But I do want a Unix phone!
The phone hardware must match the carrier's tower you want to use too....
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Hardware does not have to match the tower, not entirely. What matters is the ability to receive and transmit the signal. It's not impossible to emulate or simulate hardware to match. Well, I guess it depends on what you mean by match. Yes, they have to match but that does not mean you have to necessarily only use their hardware in order to match their towers.
The match is frequency based in hardware, so att based phones will not work on sprint towers. But us cellular will move to sprint, snd not att.
But I still want a unix phone!
♡♡♡♡There would have to be a way to hack it.
The cells work by trading off phone signals to the next tower in the direction of travel. This is handshaking controlled by the tower. The output level is also controlled to a minimal level, to avoid tieing up several towers with the same phone call. The handoff sometimes involves frequency hopping to a different channel, on the new tower.
All this, while you are talking on the phone....
:)>I understand.
But I still want a unix based phone, LOL!
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