What is the best phone service to stay in touch with the USA?

Please share your opinion for the best and most economical way to make and receive telephone calls with the United States. I’ve been a magicJack customer for years but recently I have had better results with Google Voice. Some people like WhatsApp. What has been your experience with these and other options? Thanks for sharing.

David Naccari: dnaccari1@gmail.com .

City: Cuenca
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