How is mobile phone SIM Card recharged

June 14, 2010 at 03:28:09
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How is mobile phone SIM Card recharged through wireless media?

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#1
June 14, 2010 at 04:28:58
You need to be a bit more specific as to what you are trying to do. SIM cards don't need charging. All they contain is data.

Stuart


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#2
June 14, 2010 at 05:09:37
When our mobile phone runs out of balance and we reset the
phone to a fixed amount after getting a mobile phone recharge
coupon. What is happening during the process? How does that
work through wireless media?

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#3
June 14, 2010 at 05:27:38
It doesn't. It works through the mobile phone network. The mobile provider keeps a record of the balance on their computers and will only allow you to connect when there is a balance. The mobile phone company can send a message to you phone to tell you how much balance you have.

It is all done via the mobile phone number which is embedded in the SIM card.

Stuart


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Related Solutions

#4
June 14, 2010 at 05:32:21
Thanks Stuart.

So are you saying the SIM card only holds the phone number
and the other details? Then what is the need of a microprocessor
inside a SIM? Memory chip need is understandable, for storing
details like phone nos and text messages etc.

Mohnish


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#5
June 14, 2010 at 05:59:52
There may well be a processor in the SIM card but mainly to process the data that is stored there. You can compare a SIM card to the BIOS chip in your computer.

On thing you can be sure of though, it does not store your credit amount. That is stored on the providers computer. If the credit were stored on the SIM card it would be wide open to hacking and fraud.

Stuart


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#6
June 14, 2010 at 06:03:11
Stuart,

Thanks, that seems convincing.

Mohnish


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