the screen shots you are showing for the APN Settings for ATT do not have anyhting Entered for MMS Port and it should say 80.
That is what my APN settings say - and it is what all previous instructions I have seen for ATT APN have said - I don't know if it is absoutley necessary but I would thnk that it might be important -
Just thought I would let you know
My Phone Galaxy Note 3 - N900T
My Rom ☆ ViSiON X N3-NB7 KK | Echo Rom V11 (N9005) ☆
My Recovery Phils CWM
My Carrier ATT
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