Got MMS working on my note 3 (SM-900) on AIO by using the following:

Name: Internet
APN: ndo
MMSC:
MMS Proxy: proxy.aiowireless.net
MMS Port: 80
MCC: 310
MNC: 150

That's it I left APN Type blank as anything in that field left MMS not sending. Hope this helps dine people out.

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