Why am I unable to send or receive MMS messages after the Oreo 8 upgrade

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Android Central Question

Since running the update to Oreo 8 on my unlocked Galaxy S8, I cannot send or receive MMS messages. I have tried various messaging apps, including Samsung's native Message app, but with all, the problem is the same, unless I completely shutdown Wifi and run on mobile data only.
 

kurt424

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Nov 1, 2012
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I'm having the same problem with my Unlocked Note 8 on Sprint. However, it still doesn't send on data either. The Samsung native app also won't let me attach a video to the chat message. It says that the file is too large.
 

Gilly14572833

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Apr 26, 2018
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You have to go to settings and erase the network settings it also erases mobile data settings and after that you will be able to send and recieve mms
 

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