i m interested to make a dual sim for my mobile - Electronic Circuits Projects Diagrams Free

mobileman · 15th May 2006, 02:09 PM

hi my dear friends,

well i m new here on this forum.
well here is so interesting.

well pls be kind to guide me.

i m trying to make a dual sim holder for my mobile(GSM).

if some one can guide me with digram,pls be kind to respond.

thanks in advance

wt lov

Papabravo · 16th May 2006, 03:23 AM

I think it will be difficult to modify your phone to use multiple SIM cards. I don't think a phone designed for one would have a clue about how to switch between the two SIM cards. What are you actually trying to accomplish?

mobileman · 17th May 2006, 09:24 AM

Quote:

Originally Posted by Papabravo

I think it will be difficult to modify your phone to use multiple SIM cards. I don't think a phone designed for one would have a clue about how to switch between the two SIM cards. What are you actually trying to accomplish?

hi dear,

well really thanks for the reply.

i dont want to modify on my mobile. bt i seen in a phone,he attached a sim like thing with a ling flat wite wh contain two sim hoders. we have to put two sims on this holder.and on the phone,we have to pu the sim like thing.

so we can use on connection at a time.bt whn putting off the mobile,and again on,the second card will work.

now i am thinking that,u r understood regarding what i am looking for.

psl be kind to help the known.

thanking u in advance

Papabravo · 18th May 2006, 01:46 AM

So let me see if I understand. You saw a phone which had some long wires to a SIM card holder that held two SIM cards. Each time you cycle power on the phone you get the other SIM card? Is that right?

How that's done is beyond my understanding. I don't know how you remember which card was last used when the power goes off.

I guess I also don't understand why anyone would want to do this.

Someone Electro · 18th May 2006, 06:02 AM

Is it realy so hard to replace a sim card on a phone?

**Nigel Goodwin** · 18th May 2006, 10:42 AM

The biggest problem here is SIZE - SIZE does matter!.

Seeing as you can already buy such devices, freely available from hundreds of mobile phone shops, why not just buy one? - they aren't expensive, and I doubt it would be easy to make something that small.

For an example, this was the top entry in a UK google search:
http://www.fonefunshop.co.uk/dualsim/dualsimcovers.htm

bananasiong · 19th May 2006, 02:33 AM

yeah, i have seen this also. it is a quite cheap sim devider. my friend has used this device. he was using nokia phone for that. when he wanted to switch to the other sim, simply press *3370# or *4720# i don't know whether other brand can make that.
*the worst, u will loss the called number, received number, missed call (all the call register) once u switch to the other sim card.

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15th May 2006, 02:09 PM	(permalink)
mobileman	i m interested to make a dual sim for my mobile hi my dear friends, well i m new here on this forum. well here is so interesting. well pls be kind to guide me. i m trying to make a dual sim holder for my mobile(GSM). if some one can guide me with digram,pls be kind to respond. thanks in advance wt lov

16th May 2006, 03:23 AM	(permalink)
Papabravo	I think it will be difficult to modify your phone to use multiple SIM cards. I don't think a phone designed for one would have a clue about how to switch between the two SIM cards. What are you actually trying to accomplish?

18th May 2006, 01:46 AM	(permalink)
Papabravo	So let me see if I understand. You saw a phone which had some long wires to a SIM card holder that held two SIM cards. Each time you cycle power on the phone you get the other SIM card? Is that right? How that's done is beyond my understanding. I don't know how you remember which card was last used when the power goes off. I guess I also don't understand why anyone would want to do this.

18th May 2006, 06:02 AM	(permalink)
Someone Electro	Is it realy so hard to replace a sim card on a phone? __________________ Il give you shocking experience.

18th May 2006, 10:42 AM	(permalink)
Nigel Goodwin	The biggest problem here is SIZE - SIZE does matter!. Seeing as you can already buy such devices, freely available from hundreds of mobile phone shops, why not just buy one? - they aren't expensive, and I doubt it would be easy to make something that small. For an example, this was the top entry in a UK google search: http://www.fonefunshop.co.uk/dualsim/dualsimcovers.htm __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

19th May 2006, 02:33 AM	(permalink)
bananasiong	yeah, i have seen this also. it is a quite cheap sim devider. my friend has used this device. he was using nokia phone for that. when he wanted to switch to the other sim, simply press 3370# or 4720# i don't know whether other brand can make that. *the worst, u will loss the called number, received number, missed call (all the call register) once u switch to the other sim card.