Why can't I send or receive attachment MMS on wifi?

[AC Question]

Cannot send or receive attachment MMS on wifi

I just bought a LG G3 Verizon phone to use with ATT. I tried using hangouts, stock messaging and Textra for messaging and it works fine regular texting over wifi but cannot send or receive photo attachment. The APN is set correctly for ATT and cannot pinpoint the issue. Please help.

 

[belodion]

Re: Cannot send or receive attachment MMS on wifi

Welcome to Android Central.

Have you entered the correct MMS settings?
Do you have wifi calling and texting enabled?

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