Yep, same here. My issue probably has something to do with my recent switch to Verizon though since I ported my number over from another provider. It only affects the text/SMS feature though because I'm still getting phone calls and picture messages. I'll post back if it's something that can be fixed without needing tech support.
Those messages should be marked delivered all across the board. Let's get this resolved. When did the trouble with messaging begin? Have there been any recent changes to your phone? Are you connected to Wi-Fi or our network when sending a message? Keep us posted so that we may assist further.
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