Many of my SMS messages are still showing as "sending" in Samsung Messages app, even though they are already sent. I know they are sent, because they have been replied to.
After a reboot, the messages are still in the log but they show "Sending Failed". If I re-send successfully, the recipient gets a second copy of the message.
I have considered switching apps to resolve this problem, choosing Android Messages as an alternative. However, when I tried this I found that none of my sent messages are in the new app. Everything I've received is there, but nothing that I've ever sent is.
I've considered clearing the app cache of Samsung Messages to solve this. However, I'm worried that this will also lose parts of my message history - particularly, the stuck messages that weren't picked up in Android Messages.
I'm also going through some particular life issues right now, which necessitate keeping an accurate record of sent and received SMS messages. So, any action that risks losing these stuck messages is unacceptable.
What should I do to fix this problem?
Samsung Galaxy S8+
Samsung Messages 4.1.64
Android Messages 2.2.075