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by Nextgrid 1278 days ago
The problem with a non-iMessage/FaceTime capable phone is that you sacrifice confidentiality and quality. Unless both sides are a good VoIP provider that interconnects with others over IP (which would ideally pass through RTP as-is and allow both sides to negotiate a good codec like Opus) - which is unlikely among the non-technical crowd - you're stuck with a fairly narrowband codec, where as FaceTime is something everyone has (and Android has its own options, including cross-platform ones).