Questions tagged [3g]

Use this tag for questions involving the use of third generation (3G) wireless mobile technology.

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Does old SIM-cards have the same security as new one?

As I am using an old (10-15 years) SIM-card, I was asking myself if the hardware and software on the sim-card is equivalent to the newer sim-cards. Are the old-sim-cards (10-15years) the same as the ...
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How can I know if any cell phones other than a given set are turned on in the nearby area?

I am searching for a solution to identify phones simply by the signals it emits. Imagine a signal receiver in a room, then I want to know which people are using phones nearby. I don't care what they ...