How does the smart phone cards works beside public phones? Do they connect near Internet while reducing unit?

I would really appreciate if someone can tell me where on earth can I find details about this process. I propose when you put the card which it contains a small chip; what is happening? Is the nouns between only the card and the phone contrivance? is there any third module involved with counting unite? Anyway thanks surrounded by advance for your support to understand this.


Answers:    basically go to any phone store or radio shack, most of the sale ppl are always exceedingly eager to relief you and answer any questions!
/ The Smart Card unite with a nonspecific land number. The phone contraption is actually the third knees-up doing nothing but helping near the connection.

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