Telephones could be used but not everyone had the finances to afford it, there are still people who currently do not have access to it because the cost is very high. As for the internet, it is true that we are in the beginning, in 2018 it began to get a little closer to that world. Currently we all have access to the internet, but there are many websites that are blocked.

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Economic crisis in Cuba: government missteps and tightening US sanctions

I remember hearing that Cubans weren't allowed to use cell phones and/or internet a while back. Is that still true?