Dual SIM Rom Difference, Virtual GPRS module - Android Q&A, Help & Troubleshooting

Hello XDA,
As the title states, I would like to know the difference between single SIM roms and dual SIM roms. Searching around didn't give me any real answers.
To further specify, I would like to know as to how much of the OS has to be modified in order to bring it from single SIM to dual SIM state in full detail, preferably until file names. As to why, I would like to create a virtual GPRS/3G module and for that I need to modify RIL but I would like retain OS's native RIL, so instead I was thinking of taking a single SIM rom and just add dual SIM capability on to it. Obviously to do it right I will be taking dual SIM rom from somewhere for comparison. The difficulty of this task would be that since the module is not on the same chip as most phones have them on, its virtual, there probably will be difference.
And do you guys think this is possible?
Wolf

Related

Dual Sim for Athena

I have been trying to use a dual sim adaptor with Athena but would not boot with it on. Anybody had any success? It will be great for me to be able to use both 3 and standard without removing the sim. it is a pain to remove it on Athena as this is under battery and sometimes needs a flat screwdriver to remove it...
vicinc said:
I have been trying to use a dual sim adaptor with Athena but would not boot with it on. Anybody had any success? It will be great for me to be able to use both 3 and standard without removing the sim. it is a pain to remove it on Athena as this is under battery and sometimes needs a flat screwdriver to remove it...
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Do you mean dual SIM or dual SD?
Dual sim of course not dual SD
Well, i've got an old DualSIM adaptor (anlog) which worked fine on my Himalaya.
My Athena boots without problems when i use this adaptor, but it takes me 3 or 4 restarts of the phone to get the DualSIM adaptor changin the SIM.
But i guess i have some issues with my SIMCards, they really look screwed up, makes me wonder why they work anyway
Maybe a newer Radio could have an impact on this Issue too.
Right now i use Radio 1.50 and AP Dual PK3.
If your SIMCards are screwed up the Athena won't boot, also my SIMAdaptor needs both SIMCards entered. With only one SIMCard in it, the Athena won't boot.
BTW: SIMDisplay (can be found on sourceforge.net) is the perfect Todayscreen Plugin for Displaying the active SIM.
I have one running but ...
finally I obtained a Simore dual sim working. But my problem is due I have one line for voice and other one for data, if should be possible to have some mechanism that in base to which sim is activated obtaining working the data connection or not. Do you know if it is possible?
Hi Beginner. Could you please post the model info of the Simore dual SIM you found worked with Athena? I'm currently looking for one. Thanks.
beginner said:
finally I obtained a Simore dual sim working. But my problem is due I have one line for voice and other one for data, if should be possible to have some mechanism that in base to which sim is activated obtaining working the data connection or not. Do you know if it is possible?
Click to expand...
Click to collapse
The Connection Setup Wizard will detect the network that you've just switched to and offer to set your data connection to match it. It'll do that every time the network changes.
If you're looking to buy a SIMore dual SIM adapter for the Athena, DON'T. The SIMore dual SIM won't let you connect to WCDMA network so you won't be able to use HSDPA or 3G!!!! I bought one from them and in the process of getting an RMA to return this piece of junk back to them now. Their online ad is fraudulent when they say it's 3G compatible. It is not. It only let you connect to GSM which only offers up to EDGE.
Is there any dual SIM adapter that will let you connect at 3G speeds out there?
PS: If you're only using EDGE at the moment and don't think you will ever never for the rest of your life upgrading to HSDPA, then by all means, flush your money down the toilet and buy this expensive piece of junk.
Thanks for the warning. Thought it was useful to have.
no dual sim
shame there is none yet. it will be great to have a truely dual phone. Networks will hate it
I think it could be posible but not easy to create a soft sim somehow. instead of having to change my three.co.uk hdspa compat sim between Athena (why the hack they do not do the sim reader as a slot accessible without removing battery) and my mac laptop is a nightmare. I tried to use Wifirouter, but it crashes athena quite often.
vicinc said:
I tried to use Wifirouter, but it crashes athena quite often.
Click to expand...
Click to collapse
Under the factory ROM I never had it crash, even with hours of use at one time. I haven't used it under AP4 yet. Maybe you have a conflict with another program?
not installed anything apart tomtom 6 legal
vicinc said:
I think it could be posible but not easy to create a soft sim somehow. instead of having to change my three.co.uk hdspa compat sim between Athena (why the hack they do not do the sim reader as a slot accessible without removing battery) and my mac laptop is a nightmare. I tried to use Wifirouter, but it crashes athena quite often.
Click to expand...
Click to collapse
Iam not sure what are you explaining.
are you using a dual sim system?
does it works? which is it?
thanks.
i tried using few none worked. I find very difficult in swaping sims without the add o a flat screwdriver, also removing battery is not fun.
I am wondering if it will be possible in developing a virtual sim card that will copy the info from our sim card allowing the phone to work with it?

Dual SIM cards on Android?

I have an Infuse 4G, with which I'd like to use dual SIM cards. Does anyone have any firsthand experience with doing this? They're both AT&T, so I don't have to fiddle with different APN settings. Worst case, I can simply cold swap them, but I would rather make my life easier than that. I am assuming that with a phone designed for a single SIM, I cannot run them simultaneously under any circumstances, of course.

[Q] SIM Toolkit and Dual-SIM adapter

Does anyone know if it's possible to install the SIM Toolkit on AOSP-based ROMs (I'm running AOKP)? I'm living in East Africa (Tanzania) and for a couple of the cell providers it's pretty useful to be able to access the SIM card's menu. I know it's included in AT&T (or all Samsung?) ROMs but not sure if it's possible to get it working on AOSP ROMs.
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[Q] ROM with Dual Sim Support

Hi,
I have been digging around, but came up with nothing.
I would like to have dual sim ability on my samsung galaxy s2, however I want both sims active at the same time. I have seen this feature in crappy phones where they have a "line 1" and "line 2", both active at the same time and you dont need to switch between the two.
Unlike my samsung galaxy s2, the crappy phone does not need a dual sim adapter.
Now from what I have seen, a dual sim adapter can provide some interface to switch between sims, this tells me that the OS can interact with the dual sim adapter, so maybe theres a ROM or app can that allow both lines to be active at the same time?
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[Q] CAT b15 Dual Sim Conversion?

Just realized My cat b15 is actually a single sim.
Yes they changed it at the last minute because of network issues in the UK.
I managed to pull out the piece of plastic that occupied the second sim bay. However, inserting a SIM makes no difference at all.
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