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Samsung and Other Manufacturers Disable Phones Bought on Gray Markets: A Consumer Nightmare
(nomadscrolls.net)
This is a most excellent place for technology news and articles.
I am lucky enough to be able to avoid the GSM only banks and choose banks that do work on degoogled phones. Honestly, thanks to the ongoing trade-war between China and the US, degoogled phones will become more common and force banks to cater to those people. I'm not worried.