But isn't the SIM card supposed to work with the cell tower software? Isn't it more the job of the removable SIM card and not the actual phone itself? Sure, the phone sends out the messages using the hardware, the actual physical parts inside the phone, but isn't the SIM card supposed to have the ability to talk to whichever towers they were designed to talk with? I mean, are some phones talking to cell phone towers without the SIM cards? When I take out my SIM card, I can't talk to the towers or is there a way to still talk to towers without the SIM cards? I use Ubuntu Mate 16.04. Version 6.04 is before my time. I started using Ubuntu around version 8 or 9. But Ubuntu has been improving since then. Now, it is at version 20.
You are viewing a single comment's thread from:
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....
♡♡♡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!
♡♡♡♡