A328 (dual sim) "Contact Binding" not working as expected

Question

Hi, fellows!
On my A328 (dual SIM, Android 4.4.2) I wanted to use "Contact Binding" feature, so, in Settings -> All settings -> SIM management I put:
Default Settings section:
Voice call = Always ask
(possible 3 options: SIM1 | SIM2 | Always ask)
General Settings section:
Contact binding: I've binded some contacts to SIM1 and rest to SIM2.
However, whenever I make a call. a dialog pop-up asking what SIM to use; the SIM used to bind the contact is marked with a star symbol in the dialogue window.
Please note that I tried to set voice call default to SIM2. When I called a contact binded to SIM2, there was no dialogue pop-up, so it worked as expected. But when I called a contact binded to SIM1, the dialogue pop-up.
I expect that a contact binded to SIM1 to use SIM1 when I make a call, a contact binded to SIM2 to use SIM2, and a contact no assigned to pop-up the dialogue windows
Any idea to get rid of the dialogue and use directly the contact binding I set?

Answer 1

Binding works one way. This means that textInput.text changes
to match the value of account.identifier, not the other way around.
While I think it's theoretically possible to create a binding the
other way (I haven't played with binding in ActionScript), it makes
more sense to listen to the TextInput's change event to get changes
to the text field.
Or, you can create a model in the MXML and bind one its
properties to the textinput's value. Look in the docs about the
mx:Model tag for details.