# SIM Phone number

**URL:** <https://forum.sierrawireless.com/t/sim-phone-number/276>\
**Category:** Open AT\
**Created:** [February 10, 2006, 3:17am UTC](https://forum.sierrawireless.com/t/sim-phone-number/276 "2006-02-10T03:17:30Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Yul](https://avatars.discourse-cdn.com/v4/letter/y/7ba0ec/32.png) [@Yul](https://forum.sierrawireless.com/u/Yul)\
**Post date:** [February 10, 2006, 3:17am UTC](https://forum.sierrawireless.com/t/sim-phone-number/276/1 "2006-02-10T03:17:30Z")

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What’s the AT command to find out the SIM Phone number?

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**Author:** ![skos](https://avatars.discourse-cdn.com/v4/letter/s/bc79bd/32.png) [@skos](https://forum.sierrawireless.com/u/skos)\
**Post date:** [February 10, 2006, 10:51am UTC](https://forum.sierrawireless.com/t/sim-phone-number/276/2 "2006-02-10T10:51:57Z")

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> [@Yul](#):
>
> What’s the AT command to find out the SIM Phone number?

Hi Yul,

you can read out the SIM phone number with “at+cnum”.

But you can get only the number, if anybody writes the number before into the memory, e.g. the provider.  
(In germany most providers don’t write the number into the card.)

Best regards,  
skos

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**Author:** ![Yul](https://avatars.discourse-cdn.com/v4/letter/y/7ba0ec/32.png) [@Yul](https://forum.sierrawireless.com/u/Yul)\
**Post date:** [February 12, 2006, 9:50pm UTC](https://forum.sierrawireless.com/t/sim-phone-number/276/3 "2006-02-12T21:50:44Z")

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Thanks for your reponse, skos. Can I then ask the solution to this issue?

If the provide has not programmed the number, then how would I find out the Phone number of the existing SIM?

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**Author:** ![skos](https://avatars.discourse-cdn.com/v4/letter/s/bc79bd/32.png) [@skos](https://forum.sierrawireless.com/u/skos)\
**Post date:** [February 13, 2006, 8:31am UTC](https://forum.sierrawireless.com/t/sim-phone-number/276/4 "2006-02-13T08:31:01Z")

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> [@Yul](#):
>
> If the provide has not programmed the number, then how would I find out the Phone number of the existing SIM?

You can dial a known voice number.  
Let it 1 or 2 times ring and than hang up.  
Now you have the voice number of your unknown sim card.

Sometimes the data call number is different.  
So you can repeat this test with a data call.  
Let it also 1 or 2 times ring and hang up.  
Now you can look which number do you have with a data call.

Perhalps, this is no very elegant but an easy way (with no costs) to get the numbers.

best regards,  
skos

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**Author:** ![Yul](https://avatars.discourse-cdn.com/v4/letter/y/7ba0ec/32.png) [@Yul](https://forum.sierrawireless.com/u/Yul)\
**Post date:** [February 13, 2006, 9:45am UTC](https://forum.sierrawireless.com/t/sim-phone-number/276/5 "2006-02-13T09:45:44Z")

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Thanks skos. You have been very helpful. I really appreciate it.

Yul