[Galaxy Grand Duos i9082 Q&A, Help & Troubleshootin] ##W4TCH0UT##:
CM-11.0 FAQ

How do I enable Dual SIM?

Starting from the 20140309 release, Dual SIM support is available on an experimental basis. To enable or disable, run the following command from adb or terminal emulator and then reboot. SIM Settings can then be found in Settings -> Multi Sim Settings.

Enable:

su
setprop persist.radio.multisim.config dsds

Disable:

su
setprop persist.radio.multisim.config none

Note that Dual SIM mode currently has the following limitations:

Both SIMs are always enabled (no way to disable one SIM)

"Receive incoming call while data is enabled" is always enabled

The QuickSettings tile will display the status for the currently selected SIM for data

There is no arrow activity indicator in the status bar.

Changing 2G/3G network mode using the QuickSettings toggle is not supported, only do it from Settings.

Changing 2G/3G mode in Settings may show too many options if the language used is not English. If more than 3 options is shown, only use the 3 top options (which will be WCDMA only/GSM only/WCDMA preferred regardless of the actual label shown).

3G may not work properly if Dual SIM mode is enabled with only 1 SIM inserted

Cannot set different ringtone for each SIM

Baseband version not displayed in Settings

What are incremental/delta updates?

Delta updates allow updating from one version to another downloading only the difference rather than the full ROM, for those on limited bandwidth. They are named like "cm-11-20131215_to_20131216_delta-UNOFFICIAL-i9082.zip" which means that it can be used to update from 20131215 to 20131216 (simply flash it in recovery like any other update). Delta updates will not work if you have installed custom kernels or other system modifications, including editing build.prop. In those cases, downloading the full update is recommended.

Can you include Feature X into your ROM?

No. This ROM will have CyanogenMod's feature set.

Can you include S-Note/S-Planner/MultiWindow/Insert Samsung App Here?

No. This is an AOSP ROM and cannot have TouchWiz applications.

Can you include call recording?

No. CyanogenMod does not include call recording to avoid potential legal issues.

Can you add Feature X to the stock ROM?

No. I don't work on stock ROMs.

What kernel does this ROM use?

A slightly modified version of the stock kernel, the source code is linked above.

I've heard that Broadcom doesn't release source, how can you make this ROM?

Contrary to the popular belief, userspace driver source code is not always required to make an AOSP-based ROM as long as the proprietary binaries shipped with the device does not modify the API too heavily (or is from a very different version of Android). Instead of modifying the source code of the drivers, the Android source code was adapted to be able to use the proprietary binaries.

Can I use your ROM as a base?

http://source.android.com/source/licenses.html

Most of Android/CyanogenMod is licensed under the Apache License with other small parts licensed under other open-source licenses. Which means that you may modify and redistribute without asking for permission as long as the proper credits is given and it is not misappropriated as being the official CyanogenMod. (In other words, you must say that it is based on pawitp's unofficial CyanogenMod, but is not related to CyanogenMod in any other way.)

Will you make this official CM?

Due to the amount of work and commitment involved, I am not planning to make an official CM port.

Can contacts be saved to phone/SIM?

No. It is not supported in AOSP-based ROMs.

Can I mirror your ROM?

You're free to, but I will not list it in this post.

Is overclock (OC) available?

Since 20140101 build, 1.3 GHz OC is available in Settings -> Performance -> Processor (enable developer mode first). Higher frequencies are not enabled since benchmark does not show additional benefit.

Will feature X from a previous version of CM be implemented?

I don't know, probably will be, eventually. I don't really involve myself in the feature-set side of CM.

(Answered by pawitp)

Reporting bugs:

pawitp has strictly mentioned in his thread that you report bugs in his thread.