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Constellation

10 Sept OTA Update crashed all comm apps

Galaxy S20U

System software update hit today, so naturally I click update as it states security vulnerability.  I go about my day, wondering why no comms.  No WhatsApp, no Google Duo, no Viber which is how I do my communications for past decade +.  All say I'm offline even though I'm online.  No matter wifi, cell or even both, wiping app cache after force stops and even system cache did nothing.  Phone isn't 3 weeks old so pretty frustrated any help possible I'd appreciate i will have to return the phone if it's just a paper weight.