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androidandroid-4.4-kitkatdual-sim

Choosing SIM to make a call

I'm really interested in working this out.

I'm developing an app which is supposed to make calls, but the problem starts when device has dual SIM. After starting Intent.ACTION_CALL activity a dialog pops up to choose the SIM card, I managed not to open that dialog by putting "NOT_NEED_SIMCARD_SELECTION" extra with value: false. But still I don't know how to force slot I want to use. This should work on API 19.

I found an app Dual SIM Selector where it works perfectly, but I have no idea how they managed it.

Solution

  • I figured it out with help of reflections. It turns out my device's API was somehow changed and it provides methods like setDefaultSim.

    Method setDefaultSim = TelephonyManager.class.getDeclaredMethod("setDefaultSim", Context.class, int.class, int.class);
setDefaultSim.invoke(null, this, 0, slot);