I have read a couple of times now that we should download the Signal App because if there is a blackout in communication that will be the only way we can communicate. Supposedly, a military satellite has been launched to handle this communication. I don't know if this is true, but I can't see why everyone wouldn't want to have it just in case it is.
Here is the link for the download, if you are interested: https://signal.org/install/
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