Only after switching my family to Signal, I noticed how much better international voice and video call over Signal than over Whatsapp. With Whatsapp I would of

Only after switching my family to Signal, I noticed how much better international voice and video call over Signal than over Whatsapp. With Whatsapp I would often get lag, echo and generally poor voice quality, with Signal it just works perfectly, even better than regular phone calls. Give it a try and check if it's worth it for you.