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Experience with DualSim in Treo 750

I have a work SIM and a private SIM and really do not want to carry two phones around. In my previous two models of regular (not-smart) phones I used one of those dualsim cards where you cut our the center of each sim and slip them into a new sim card with some extra electronics on it. You can then switch between the sims with a couple of key presses or even at automatic time intervals. eg. http://duosim.com/
OK, so I have two different makes of this type of dual-sim card and tried each one in the 750. The switching program shows up in the phones menu and it looks like it is going to work but it does not. When you try to switch to the second sim, the phone switches off and back on, but the the phone is still using the first sim.
I really want to find a way to get this to work. I have ordered one of those multi-sim card cloners (same link as above), in the hope that will work differently.
Has anyone found a solution to this ? Either a particular make of dual-sim or multi-sim cloner that works or maybe a tweak to get past the above mentioned problem ?

gajsler said:
I have a work SIM and a private SIM and really do not want to carry two phones around. In my previous two models of regular (not-smart) phones I used one of those dualsim cards where you cut our the center of each sim and slip them into a new sim card with some extra electronics on it. You can then switch between the sims with a couple of key presses or even at automatic time intervals. eg. http://duosim.com/
OK, so I have two different makes of this type of dual-sim card and tried each one in the 750. The switching program shows up in the phones menu and it looks like it is going to work but it does not. When you try to switch to the second sim, the phone switches off and back on, but the the phone is still using the first sim.
I really want to find a way to get this to work. I have ordered one of those multi-sim card cloners (same link as above), in the hope that will work differently.
Has anyone found a solution to this ? Either a particular make of dual-sim or multi-sim cloner that works or maybe a tweak to get past the above mentioned problem ?
Click to expand...
Click to collapse
Hi gajsler,
I found myself being in the same situation: Want to use both office and private Sims with my Treo.
After some research I can say that it depends mostly on the combination of SIMs you are using. If you are using any UMTS/3G SIMs then a digital DualSim-application wouldn't do trick, especially if you are using a H3G-SIM (Hutchison 3G).
You will need an analog DualSim-holder for these SIMs.
I've got one from HongKong (Ghost SIM, no cutting) but it doesn't work correctly. Only the first SIM card is being used ... don't know how to get past this issue.
Seems to be tricky. Will post any additional experiences.
Greetz,
TreMax

gajsler said:
I have a work SIM and a private SIM and really do not want to carry two phones around. In my previous two models of regular (not-smart) phones I used one of those dualsim cards where you cut our the center of each sim and slip them into a new sim card with some extra electronics on it. You can then switch between the sims with a couple of key presses or even at automatic time intervals. eg. http://duosim.com/
OK, so I have two different makes of this type of dual-sim card and tried each one in the 750. The switching program shows up in the phones menu and it looks like it is going to work but it does not. When you try to switch to the second sim, the phone switches off and back on, but the the phone is still using the first sim.
I really want to find a way to get this to work. I have ordered one of those multi-sim card cloners (same link as above), in the hope that will work differently.
Has anyone found a solution to this ? Either a particular make of dual-sim or multi-sim cloner that works or maybe a tweak to get past the above mentioned problem ?
Click to expand...
Click to collapse
I'm using Simore Gold 2 and it works perpect.

is it possible / room enough to use a dual sim ?

i like to know if there is room enough above the sim to use a duosim from duosim.xcom ?

Anyone an idea?

come on , is there any room to place a dual sim ?

Oh, wow. That stuff looks cool. Now I'm curious too.

Yes, there should be room enough.

So, I've tried it and yes it fits but it doesn't work.
The TD has 8 connections to the SIM card and the Magic Sim (www.dual-sim.nl, 16th cut version) has 6 connections. It is 16th gen card which they propose to use for smartphones....
It works on my old Nokia 6021. This phone has 6 connections to the SIM Card.
The cutted SIM Card doesn't work anymore on the TD so I have to purchase a new one. I have sent a mail to dual-sim.nl. I will post the outcome.

number of contacts is irrelevant. Only 6 contacts are used for sim cards, the last 2 are RFU (reserved for future use).
If i read you right, after you cut up your sim card it doesnt work anymore? even directly in the phone without the dual sim? If thats the case your broke your sim while cutting it. The dual sim may or may not work still.

The cutted SIM doesn't work in the TD but does work in the Nokia 6021.
The Magic Sim doesn't work in the TD but does work in the Nokia 6021.
So, my assumption was that the cut is the reason that the SIM card doesn't work anymore on the TD. Strange that it still works in the 6021??

No, there is an incompatability between the magic sim and the touch diamond it sounds like. Only 6 contacts on the sim are used, the last two do nothing.
So if it works fine in your 6021 and not the TD, then its the magic sim that has the problem.
What error do you receive? no sim/insert sim?

SIM card is seen, Magic Sim program is available in teh TD but it doesn't register to the network.

geraldkw said:
SIM card is seen, Magic Sim program is available in teh TD but it doesn't register to the network.
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Click to collapse
Hmm thats really strange. What happens when you manually register?

It lists the available networks. KPN (my provider) in one of the them. If I try to connect to this netwerk the same thing occurs: can't register... I can try another network (roaming)?

Hmm that means the IMSI is not being passed corectly.
Sounds like a bug with the multisim itself. Another brand might work.

Not all new USIM cards works fine.
Put your phone on GSM mode instead of WCDMA or Auto.
Then the Dualsim works fine.

someone1234 said:
Hmm that means the IMSI is not being passed corectly.
Sounds like a bug with the multisim itself. Another brand might work.
Click to expand...
Click to collapse
Due to your questions I tried it again and came to the conclusion that the cutted SIM card didn't work in the TD because it didn't contacted completely. I also saw a different kind of slide for the Magic Sim which leads to a better contact of the Magic Sim to the TD and now everythong works!!
Thanks someone1234 for taking the effort ask further

geraldkw said:
Thanks someone1234 for taking the effort ask further
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Click to collapse
Thats great! no problem.

Does the Dual-sim 16th gen. non-cut version also fit into the TD?
I don't think my employer will appreciate it if I would cut my KPN sim-card of my company phone...

anyone tried the 20th gen dual sim adapters yet?

dual sim

hello all. this question may be stupid, but esentially for me: can i made 2 sim cards to work both on my diamond in the same time? I mean to can receive a call on the orange sim card and to receive also to vodafone sim card without to be need to change the sims, or to change the operator? to function both.

I guess there are a couple of mobiles (with two antennas) able to do that (seen one, can't remember the brand and model). With only one antenna what you can do is clone both SIM cards into just one and with a reboot you have the option of starting up with one network or the other (I reckon you can have more than 2). I don't know if it's possible with current SIM cards and can't remember the hardware and software needed to do that.
Oh.. And it's illegal The best option is to have more than one mobile

yes i know about that devices that have 2 antenna's. i was wondering if i can do it on diamond. i know also about that method with 2 sim and after restart to choose the network operator. thx for the answer.

Using Dual Sim Card Adaptor With Himalaya

Hello
Did some one uses dual sim card adpaptor for using 2 number at the same time online ? with the Himalaya ? if so, which ? Thanks

Hey,
I think it should be possible. The most dualsim adapters are changing the sim card after a reboot.
have a nice day,
gustl

olimpus said:
Hello
Did some one uses dual sim card adpaptor for using 2 number at the same time online ? with the Himalaya ? if so, which ? Thanks
Click to expand...
Click to collapse
It is NOT possible to use 2 numbers online at the SAME time with only ONE Receiver Transmitter Unit. Its just technically impossible.
You can use a Dual (multiple) SIM-Adaptor , but there is only ONE sime at the time active. You can change the active SIM by disactivating/activating Radio or by a tool.

It's possible to use a dual-SIM adapter on all and any phones (in theory), and it functions exactly as what gustl has said. But the hard part is finding the right one so it fits in to the back of the phone. GL finding the right one that can fit right on the Hima, considering how tightly packed the back of the Himalaya is.

But i think the question was in deed it is possible to habe two numbers online at the SAME time, with a dual Sim Adaptor, and this is NOT possible.
There are some phones in the Market with two GSM Units. They all have the same problem double GSM Units equals double Power consuption, your standby time decreases dramatically.
Using a Dual SIM Adaptor is a good alternative two have possibilty to change between two Sim Cards, BUT there is only ONE Oneline at a time. (What should be good enough for 99% of us). If you really need a second SIM active i would prefer a small second mobile. (Just my 2 cents)

Dual SIM adapters use SIM toolkit to switch between SIM's. As there is no working STK for WM6.1 on Hima it will NOT work.

Possible for 2 sims to be toggled at one go using dual sim adapter
Sorry for posting this reply a bit late, just came across this thread today. With regards to your query as to whether dual sim adapter will be able to toggle 2 SIMS at one go, my answer is yes. I've done it before with my O2 XDA II but unfortunately I’m unable to do it now once I upgraded my rom to 1.60.00 WWE. Only one rom version for himalaya will be able to do it but till now I'm unable to locate it. The version I'm referring to is 1.52.00 WWE. If anyone happen to have or stumble upon this rom, appreciate if you could either upload it or point it to me as where I can locate it.

Virtual SIM card?

Hi,
So I was thinking, is it possible with some driver may be to make a virtual copy of a physical SIM card, possibly copy 3-4 cards and make the phone work in multi-card mode without the need of SIM cards being physically present?

now that would be nice, a great idea, im pretty sure someone could make something like this since like other phones like sprint dont have a sim card sometimes are programed directly to the phone maybe its the same prosses.
also would make it easier for many like me that have 2 or more sim cards i myself have a T-Mobile (US) and Movistar (Mex.) sim cards and its a bother to have to change them when visiting like right now im in Mexico at the moment.
but it also would bring up another problem to have something like that.
for example someone gets your sim card (if you dont know anything about such program and if made) and someone with mischeif on their minds saves your sim information and uses it as they please. (then again. its just like stealing your phone, you would call your provider and disactivate it so no further charges would apply the second you knew that something was up. its just harder to know since you would have to wait till the bill comes in)
but if at all possible i would use it for good. would be nice

tombrighteyes said:
now that would be nice, a great idea, im pretty sure someone could make something like this since like other phones like sprint dont have a sim card sometimes are programed directly to the phone maybe its the same prosses.
also would make it easier for many like me that have 2 or more sim cards i myself have a T-Mobile (US) and Movistar (Mex.) sim cards and its a bother to have to change them when visiting like right now im in Mexico at the moment.
but it also would bring up another problem to have something like that.
for example someone gets your sim card (if you dont know anything about such program and if made) and someone with mischeif on their minds saves your sim information and uses it as they please. (then again. its just like stealing your phone, you would call your provider and disactivate it so no further charges would apply the second you knew that something was up. its just harder to know since you would have to wait till the bill comes in)
but if at all possible i would use it for good. would be nice
Click to expand...
Click to collapse
Indeed, i hope it is possible. I dont think theft would be any problem at all, because the gsm network should not accept simultaneous login from the same SIM card. It just makes sense to be this way. I myself have to use up to 5 cards and growing. Ultimately, virtual SIM cards would also enable purchasing cards from the internet and also cheapest route selection, things like this..

point made.
you have a point.
i forgot about the network not allowing you to have two at the same time.
but yeah then again, it shouldn't be much of a problem i think. 5 cards is alot.
but you're right if such a program where made, it would open the market so mucho more and one could actually buy online sim card info. and if this program where made, one could save the info to the phone then back it up to a computer (where it's safe, most of the time atleast) and maybe the same program could write back to a sim card thats not activated (for purposes just as loosing a sim card, but not the info.) now there's an idea for ya.
would be super nice!
too bad i have no clue on how to program such things, but ideas i have
if anyone takes the challenge to create it, if at all possible i would gladly donate since i would use it surely.

Possible, but..
It's possible if you have the Ki and IMSI values from your SIM. The IMSI is easy, but cracking the Ki is only possible in old SIM cards, using COMP128-1 encryption.
All the SIM cloning tools on eBay can clone only these old cards.

A virtual sim card is a really cool idea. No more swapping sim cards between you primairy phone and your backup phone... (I only have only one sim)

kolomparrudi said:
It's possible if you have the Ki and IMSI values from your SIM. The IMSI is easy, but cracking the Ki is only possible in old SIM cards, using COMP128-1 encryption.
All the SIM cloning tools on eBay can clone only these old cards.
Click to expand...
Click to collapse
IMSI can be be read with an nokia e51 using the blackberry connect softwre. you can see the imsi value in the programe info where you must enter to view you PIN.

emilgaig said:
IMSI can be be read with an nokia e51 using the blackberry connect softwre. you can see the imsi value in the programe info where you must enter to view you PIN.
Click to expand...
Click to collapse
Hi
No they give you the IMEI number not the IMSI.
The problem you would have is that sooner or later the networks would block your phone because they will see the fact that your phone is running 4-5 mobile numbers with ONE IMEI no. Ebay is littered with Cheap dual active SIM phones. They only have one IMEI and sooner or later the network(s) will switch off your phone.
The way round this is to have 2 IMEI numbers to run 2 sim cards at the same time...abit like the Samsung D880. This basically means you have 2 phones with 1 screen and 1 keypad...i have one and i know these work great!!.
Regards
Wasim

The will not block you for changin sims, right?
And also GSM won't allow you to register simulteniously two sims, only one at a time...
Cos TD has only ONE GSM inside, not two as Samsung DuoS

What the progress of the topic, people?

I certainly hope this is not possible. I wouldn't want to know anyone can copy and use my simcard. That would be an unacceptable breach of security for any mobile phone user.

This might be a good breach, and it exists, just need a tool to use it with windows mobile! I can even now COPY MY SIM to another sim, yes - it's need a liitle crack with it, but card itself intact, and i can have a copy
So - What are solutions now for windows mobile?

i really like to know if it is possible. but i dont think an emulator is a must because in ppc we can easly turn off the cellular connection and turn it on again. that way (if you've used old 3in1 sim cards, you'd know) you can change the operator. every time you restarted the gsm connection, your operator will change.
and what about connecting to more-than-one operator at the same time?
cheers

and what about connecting to more-than-one operator at the same time?
Click to expand...
Click to collapse
that function is not possible (c) Thor, Stargate SG-1

pedmond said:
I certainly hope this is not possible. I wouldn't want to know anyone can copy and use my simcard. That would be an unacceptable breach of security for any mobile phone user.
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Click to collapse
I am in Saudi & have 3 sim cards(STC) with the same number. One in my laptop, One in my Samsung, one in my Diamond. All work for internet at the same time to use for phone I activate by *123$ (this is then primary card for incoming & texts). When in Spain I have 2 cards(Movistar) both of these work & ring at the same time, but text messages only goes to one of them.

Virtual Sim Card
hello ladies and gentleman this is a very good idea i was thinking about the same idea today... In the virtual sim card there should be a tracking device installed in the phone so that when it is stolen you can track down the phone or the company can switch of the phone and it will have no use and all your data is safe... I am all the way in africa Botswana and my name is delmar dube i am willing to do more research on this because i want to see it come true

I would be surprised if this was possible... the GSM chipset firmware is pretty much sealed off from a phone's operating system except for the AT command interface. Otherwise people would be able to fiddle with transmit power which would invalidate the phone's FCC/etc certifications.

Any progress??
Heyy like most on this forum thread I just thought of this last night, I have an unlimited plan with Wind Mobile (who's coverage is um.... not great) with Unlimited internet and talking and texting for $29/mo. Unfortunately I spend the majority of my time outside their current coverage area, and would like to get one of Telus' "One Number Unlimited" voice plan ($7/mo) for when I'm outside of Wind's area but still want to call my girlfriend. Virutal Switchable SIM cards would be a great solution since my phone doesn't exactly like to co-operate with me when I try to turn it on after having the battery removed to get access to the SIM slot. Plus I don't want to be carrying around a little tiny piece of plastic that'll give me chaos if I ever lost it.
Anyways I'm running a Samsung Galaxy Exhibit 4g (4g is the name of the phone, it's just LTE of 3G though), It's running ICS 4.*something.
Oh yeah, sorry for being a grave-digger

I love this idea. I mean apple now has patents for virtual simcards, I really hope the android market follows suit. I have 6 sim cards and counting (Afghanistan, Switzerland, United States, Korea, Philippines, and UAE), and would love to be able to purchase and activate my "virtual sim card" off of say the Google Play Store, prior to flying into a country.
I wouldn't mind some kind of DRM or whatnot, just being able to buy service before I go into country, and then have calling and data capabilities as soon as I walk off the plane would be worth it.

I have a korean Galaxy S2, which has the sim tray damaged, being impossible to connect any SIM card.
If I could use virtually my SIM card, I coud use this phone.
Is this possible??
I just wanted to use one SIM card just for phone calls, dont even need services like internet...