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I am having the same issue. I have been turning my phone off and when I turn it back on, all my missed messages will pop up. If I do not do this, it will be hours before my messages come through. So frustrating!!!
same here.. got a new s20 ultra and i am not receiving text messages .. evwrytime when i restart i am able to receive all the messages as a bunch.. and again the messages are taking much time to receiv.. i am not able to understand what to do.. hope samsung will solve the issue
I never use the default messaging app on devices as there are better options out there. One of the best is Textra, and have been using for many years on every device without fail. No issues texting using Textra on my 20 Ultra.