Up till now, we haven't manage to find a valid solution that "tells" our Android application that the device is in call waiting state.
We made some tweaks using persistent variables, it works for 95% of the times - which is not good enough.
We are looking into 100% solution
4 freelance ont fait une offre moyenne de 175 $ pour ce travail
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We checked your posting in detail and based on that we are ready to do work as per your budget and timing and we are ready to discuss the things with you