vB Easy Archive - dual / twin sim card holder

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dual / twin sim card holder
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Posted by: VR6

anyone use a dual sim card holder for their BB? it allows the phone to use 2 sim cards into one sim card slot...

you can get them on ebay...they're available for almost all phones but none for BB

does it work?

Posted by: GregGebhardt

What would be the purpose of it

Posted by: lgreenberg

Quote:

Originally Posted by GregGebhardt

What would be the purpose of it

It would basically create a phone with two lines (numbers.)

I'm not sure any of these actually work though.

Posted by: XDS2005

Wirelessly posted (Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) BlackBerry7290/4.0.2 Profile/MIDP-2.0 Configuration/CLDC-1.1)

Here are just A few reasons.

To be able to switch lines (#'s) on carriers that don't support 2 #'s on one SIM at A WIM.

To have more contacts stored on SIM cards rather than locally on your BB.

Better tower selection.

Allowed towers that the BB can use are stored in part on the sim card.
This may allow for A broader selection of towers you can use.
Which in part will theoretically give you A better signal.

Say for instance I have 2 SIM cards.

And you want to use tower

A. ' 850MHZ Frequency.

But SIM card 1 doesn't have knowledge of this new tower or it's new frequency.

But SIM card 2 does have defaxto knowledge of the tower and its "callsigns".

Then instead of going threw the motions of removing SIM card 2 and replacing it with SIM card 1 .

The card holder makes it much more easier.

There is ALSO!

....

If you have ALL 4 needed codes to clone your card you could keep '¤X¤' amount of contact on one card and '¤X¤' amount on card two.

(Kinda Like A double Sided CD or record)

(Side A side B thing)

In short there are many bennefits.

Finaly.

Let's not forget we want to keep the SIM cards in good shape and what better place to give then A workout then inside your phone.

I'll post more if I get A chance.

Posted by: XDS2005

Wirelessly posted (Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) BlackBerry7290/4.0.2 Profile/MIDP-2.0 Configuration/CLDC-1.1)

If for some reason you wanted to use A different carrier

O and if the Sim is damaged you have A backup right there ready to go.

There is A couple other reasons but I can't think of them right now.

Posted by: tdumaine

Quote:

Originally Posted by XDS2005

Better tower selection.

Allowed towers that the BB can use are stored in part on the sim card.
This may allow for A broader selection of towers you can use.
Which in part will theoretically give you A better signal.

Say for instance I have 2 SIM cards.

And you want to use tower

A. ' 850MHZ Frequency.

But SIM card 1 doesn't have knowledge of this new tower or it's new frequency.

But SIM card 2 does have defaxto knowledge of the tower and its "callsigns".

WTF??

Quote:

Originally Posted by XDS2005

If you have ALL 4 needed codes to clone your card you could keep '¤X¤' amount of contact on one card and '¤X¤' amount on card two.

Isn't cloning, like, illegal?

Quote:

Originally Posted by XDS2005

In short there are many bennefits.

Finaly.

Let's not forget we want to keep the SIM cards in good shape and what better place to give then A workout then inside your phone.

I'll post more if I get A chance.

Please don't, it appears you havent the foggiest what you are talking about!

Posted by: tdumaine

Quote:

Originally Posted by XDS2005

O and if the Sim is damaged you have A backup right there ready to go.

There is A couple other reasons but I can't think of them right now.

How exactly do you damage a sim card while its in the phone??

Posted by: XDS2005

Wirelessly posted (Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) BlackBerry7290/4.0.2 Profile/MIDP-2.0 Configuration/CLDC-1.1)

Think of it like buying A water cooler for your PC.

It's A one time upgrade!

Posted by: XDS2005

Wirelessly posted (Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) BlackBerry7290/4.0.2 Profile/MIDP-2.0 Configuration/CLDC-1.1)

Quote:

Originally Posted by TDumaine

How exactly do you damage a sim card while its in the phone??

Ever hear of moors law ?

Posted by: tdumaine

Quote:

Originally Posted by XDS2005

Wirelessly posted (Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) BlackBerry7290/4.0.2 Profile/MIDP-2.0 Configuration/CLDC-1.1)

Ever hear of moors law ?

Were you meaning Moore's law?
http://en.wikipedia.org/wiki/Moore's_law

Posted by: Seattle18

For some reason my head hurts after reading this thread, and I feel a little angry, don't know why.

Posted by: GregGebhardt

Quote:

Originally Posted by ocean18

For some reason my head hurts after reading this thread, and I feel a little angry, don't know why.

You head hurts cause you keep beating on that DAMN COWBELL!!!! <vbg>

I had to ask what advantage it would be to have two sim cards in your BB and I am afraid I got more info than I wanted. The best is if you SIM card get damaged, you got a spare, ready to go!

Posted by: XDS2005

Wirelessly posted (Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) BlackBerry7290/4.0.2 Profile/MIDP-2.0 Configuration/CLDC-1.1)

Its "Moors" law when your talking about gadgets my friend.

Before an accident has happened it's allways MOORS law.

But anyways,

I just thought of A couple other things you could use the card holder for.

- If one card filled up with to many messages you would have another card good to go.

- If you had your WAP settings setup for one E-Mail adress or one wap portal you could switch them on the fly.

Man soooo many uses.

Sorry if I sound like an add.

Regards,

Posted by: jase88

Wow...this dual sim thing sounds very cool. I should run out and get one...

Oh wait...what am I talking about???! I'm on CDMA...duh.

LOL

Posted by: tdumaine

Quote:

Originally Posted by XDS2005

If one card filled up with to many messages you would have another card good to go.

Care to explain how you would do this as one sim would have one phone number, the other sim would have another phone number?

Posted by: ippon

i had a dual sim before, so maybe i can clarify some questions raised here.

yes, it does work. i am not sure if BB's support it, since i have no experience with them. i used it with my siemens s55. it seems that all siemens phones support dual sims natively in the OS. i am told that nokias are supported as many other brands.
once the dual sim is popped into the phone, a new menu icon shows up to allow the user to switch sim cards.

it is not perfect though. first, you have to be willing to butcher your sim cards.
i mean you literally have to put a knife to your sim and CUT the metal portion of the sim. and if it was just the matter of getting the metal contact to pop out of the plastic portion, now that would be easy, but this is not the case here. you actually have to cut THROUGH the metal portion as well. metal edged have to be trimmed to make it fit into the adaptor. they also make special clippers for this function, but i did not feel like shelling out 40 more bucks, so i used my trusty pair of scissors.

and both sims cannot be in use at the same time. if sim1 is in use, sim2 is off. you get the idea.

and i said that i 'had' one before because i damaged mine only couple of weeks after getting one. the contacts are very sentisive. and because the adaptor is made of metal, it is slightly thicker than an ordinary sim, so it will not fit into certain phones. and it is possible to damage the sim compartment with this adaptor.

sim cloning is not illegal, as of yet.

on a side note, there also exist other 'multi' sim cards. 4in1, 12in1, 16in1. these involve programing a 'blank' sim using a sim card writer. however, certain types of sim cards cannot be copied, yet. for example rogers sims cannot be cloned. but fido sims can be cloned.

let me know if you want to know more! and i hope your head hurts less now!!!

Posted by: XDS2005

Wirelessly posted (Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) BlackBerry7290/4.0.2 Profile/MIDP-2.0 Configuration/CLDC-1.1)

Quote:

Originally Posted by tdumaine

Quote:

Originally Posted by XDS2005

If one card filled up with to many messages you would have another card good to go.

Care to explain how you would do this as one sim would have one phone number, the other sim would have another phone number?

why don't you read the entire thread then ask that question.

Posted by: rdef

Is there a way to not show posts originated by certain posters? There is something wrong here.

Posted by: tdumaine

Quote:

Originally Posted by rdef

Is there a way to not show posts originated by certain posters? There is something wrong here.

I don't think there is, but i may be wrong

Posted by: Soapm

So, in the end, this saves you the effort of changing the physical card????

On the other note, it causes you the effort of destroying to SIM's and possibly the phone???

I may have to pass on this one...

Posted by: roofus

Quote:

Originally Posted by jase88

Wow...this dual sim thing sounds very cool. I should run out and get one...

Oh wait...what am I talking about???! I'm on CDMA...duh.

LOL

I have a CDMA BB as well but you can still get a sim card and duct tape it to the back of your BB.

Posted by: ippon

more info clarification...

the reason why dual sims(the cutting method) are used instead of cloning(programing a blank method) them is because certain sim cards cannot be cloned, i.e. rogers wireless sim. cloning does have advantages over cutting. with cloning, no cutting is involved and you can have upto 16 phone numbers programed into it. and it being 128k, it stores alot more numbers than a more common 32k sims. however, dual sim method is the only way to have more than one phone number in one phone, if the particular wireless carrier's sim is the kind that cannot be cloned.

and although this exercise seems to be useless to a lot of people, it makes perfect sense for others, especially international travellers who do not wish to pay sometimes astronomical roaming charges overseas. and even if you are not an international nomad, it makes sense for some people with two phone lines. instead of carrying two or more cellphones around, one phone will do the job. but as i said before, unfortunately both lines cannot be online at the same time.

i don't know it is possible in NA but i know that there is a wireless carrier in europe that offer two line cellphones.

Posted by: VR6

there are dual sim card holders that do not require cutting and these are the ones i'm after and asking about...has no one had any experience in using one of these? i find that hard to believe...

the reason i ask is because my blackberry is paid for from my company and i also have a personal cell phone...i do not want to carry them both around so this dual sim card holder would be very handy if it actually works

any advice would be great

Posted by: ippon

Quote:

Originally Posted by VR6

there are dual sim card holders that do not require cutting and these are the ones i'm after and asking about...has no one had any experience in using one of these? i find that hard to believe...

the reason i ask is because my blackberry is paid for from my company and i also have a personal cell phone...i do not want to carry them both around so this dual sim card holder would be very handy if it actually works

any advice would be great

a section from my previous post

Quote:

Originally Posted by ippon

there also exist other 'multi' sim cards. 4in1, 12in1, 16in1. these involve programing a 'blank' sim using a sim card writer. however, certain types of sim cards cannot be copied, yet. for example rogers sims cannot be cloned. but fido sims can be cloned.

Posted by: GrantCOM

Quote:

Originally Posted by VR6

I think this could work on a BB but,.....

both SIM's would need to be readable by the phone (ie both Nextel) and if its a 7100 you could have nightmare of a time with MMS provisioning.

But if both were BB SIM's (and Active) you should, in theory, be able to pull this off in a manual fashion. (taking out 1 to replace with another.)

I'm going out on a limb to say that the BB OS will not accept the menu that a previous post explained switched active SIMs.

Martin!......You listening?.......Any ideas?....Thoughts?.....

Let me know what you find out!

Also, by this thread even existing, I assume that a BB will not accept 2nd line service? (that could be billed to your addy?)

Posted by: VR6

i'm not talking about those sim clone card, 16in1 thingys...i know they do not work on Rogers, but thanks for your input anyways...

the dual holders i'm talking about hold 2 full sized sim cards behind your phone battery (so you don't have to make any cuts)

Quote:

Originally Posted by ippon

a section from my previous post

Posted by: ippon

Quote:

Originally Posted by VR6

i'm not talking about those sim clone card, 16in1 thingys...i know they do not work on Rogers, but thanks for your input anyways...

the dual holders i'm talking about hold 2 full sized sim cards behind your phone battery (so you don't have to make any cuts)

problem with those is fitting.
unless your bb has some space to spare between the battery and the back cover, it won't fit unless you make some modifications to the back cover with a dremel to make it fit.
they do design the ones you are talking about for specific phones, but unfortunately, i've never seen one made for bb's...

and it does look like bb's support dual sim from what i can tell form this site.

http://www.m-99.co.uk/BlackBerry_72...le_phone_a.html

but it is the cutting method that you do not seem to be too keen on.

but from what i can tell, this adaptor 'might' work, just because of the way the adaptor is aligned.

http://www.solware.co.uk/ghost_sim.shtml

and why not be adventurous and just TRY it???
it won't cost you too much money, and unless you use a dremel on your backcover, you are not doing any real damage.

if you do have to resort to the cutting method, all you lose is a sim card, which can easily be purchased again and programmed.

be a pioneer!!!!!!!!!!!!!!!!!!
i'll love to hear your success story later.

Posted by: VR6

acutally I have tried using a product similar to this before (not exactly this product but the shape is the same):
http://szgoode.en.alibaba.com/offer... /showimg.html

and I have squeezed it behind my blackberry battery. It makes the battery door really tight but I managed to close it. It works for the first few minutes and then errors out after the 2nd switch (when you go back and forth between sim cards) consistently. But it works on my moto T720, so i know it's not faulty

I guess I'm just waiting for someone to just come on this thing and say "I've used such and such product and it works 100%!!"

Posted by: mobile_pheen

this thread has become so irrelevant ......... does any1 care anymore?? like honestly..

Posted by: mobile_pheen

this thread has become so irrelevant ......... does any1 care anymore?? ... honestly...

Posted by: ippon

you cared enough to post TWICE!!!!!!!!!!!!!!!!!!!!!

Posted by: mobile_pheen

obvious accident....

Posted by: pdazealot

I do a great deal of International travel, and being able to switch SIM's without having to yank out the battery and switch SIM's manually would be fantastic. The roaming charges are sick when you travel overseas a lot. At any rate, I have placed a dual SIM card holder(no cutting here, just two cards next to each other and a thin cable between them) into a BB 7100 series, and while the first SIM does show up and reads correctly, there is no SIM Tool Kit application that shows up and allows you to switch between the two lines. This SIM Tool Kit aka STK is standard in pretty much all phones, and it's only in the blackberry that I don't see it showing up. This is not surprising considering how proprietary blackberry is with their software. So, in short, the Dual SIM card holders work(this is for GSM based phones, Nextel/Sprint or Verizon don't use SIM cards), but since no STK icon shows up when using a Dual SIM card holder in blackberries, we appear to be out of luck. Has anyone been able to get this to work on a blackberry, or know of a STK application that works for the blackberry, or maybe Java on Blackberry? I hope so.

Posted by: unplugged

Could be just like the razor blade wars. First two sims, then 3, 4, 5.....5 sims will give you clearer calls and a closer shave............

Still unplugged with 4 sims..............uh yes in 4 phones

Posted by: y0da_007

This is the craziest thread i have ever seen, people replying have no idea what they are talking about. LOL
Dual sim cards would and are only good if you have 2 numbers on 2 different plans wit 2 different sim cards.
LOL you guys make me laugh. "good to have a backup in case one gets damaged?" who thought this one up. lol
For example! I have a demo line for work and also a personal line. I have 2 sim cards....one for each plan...(trying not to make it difficult)...if i only want to cary one device....but want to jump onto my personal plan to make longdistance calls i just switch the sim cards using the software that comes with the dual holder. No need to open the phone and switch it automatically switches hense the avdvantage of the dual sim card holder
LOL