This should not happen, it has to be a setting. I bet it's still set to Sprint for the MMS messages. I think AT&T is GSMA and if so I found this.
https://help.goredpocket.com/hc/en-...-How-do-I-setup-my-phone-on-the-GSMA-network-
Of course I suggest that you talk to RED Pocket before messing with any settings
RALI,
Thanks.
These are the same settings that Red Pocket had me input, multiple times, as each agent I dealt with had me redo everything.
One tiny difference (and this MAY be the key)...the Red Pocket customer service guys obviously cut and paste these settings into the chat sessions...and I noticed that the link you provided has
proxy.mobile.att.net
whereas the settings the Red Pocket guys sent me (several times) had a comma (ipo a period) after "proxy". (I actually stopped and double-checked this a few times as I was entering and reentering this info).
I've made the change from comma to period and will reboot the phone.
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Just to make sure this isn't due to operator error, here are the complete APN settings (below) from the link you provided.
I have entered them all as key strokes. I am wondering about the 2 that show up in blue, as hyperlinks. Is there something I should be doing on my cell phone to make them turn into blue hyperlinks or is entering them as plain black text sufficient? (FWIW, they aren't turning into blue hyperlinks automatically.)
omni