Unlocked HTC 8X (TMobile) cannot send/receive MMS on AT&T

[Papias]

I have HTC 8X (TMobile) and unlocked it to use it on AT&T. Everything works fine, but I am unable to send/receive picture texts (MMS). I've tried some of the suggestions in online, but no go. Can any one help me? Thanks in advance.

 

[gerzhwin]

See here: http://forums.windowscentral.com/nokia-lumia-1020/281812-cant-send-photos.html

 

[Papias]

Thank you for your reply, but it didn't work for me. Hopefully, I will find the solution... Thanks again.

 

[gerzhwin]

Haven't you talked to your provider about this problem?

 

[Papias]

Yes, I have. I've called them twice and unfortunately they do not know what they are saying. They have very limited knowledge.

 

[Papias]

Re: Unlocked HTC 8X (TMobile) cannot send/receive MMS on AT&T (Update: SOLVED!!)

SOLVED! OK, this is how you make your MMS work for unlocked HTC 8X (TMobile) for ATT. Do not know whether this will work for other unlocked phones. NEway, this is how I did it.

1. Make sure you set your "Internet APN" this way:
APN: wap.cingular
IP type: IPv4v6
[Leave everything else blank, including user name, password, proxy server (url), and Proxy port]

2. MMS setting:
Everything must be blank. Yes, blank. Except:
IP type: IPv4v6

This only works for UNLOCKED HTC 8X (TMobile branded) for ATT. I have not tried with other unlocked phones.