Unable to send SMS/MMS to AT&T Phone

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My girlfriend has a Samsung Captivate and she can send me SMS/MMS but I cannot send her.

I have called AT&T Tech Support and also T-Mobile Tech Support, nobody can give me solid answers or resolutions.

Our workaround is to use that TiKL Touch2Talk Application for messaging, but this is simply annoying!

Anyone? Ideas? Also, anyone wish to PM me a phone number if they use AT&T so I can test with your line?

Thanks a lot guys,

Michael

What phone are you using and through what carrier and also what firmware?

I am using the Samsung Galaxy S 4G with T-Mobile.

Stock firmware, haven't flashed anything. Its out of box.

Try going into Settings/Wireless and Network/Mobile Network Settings and then Access Point Names.

See if there's an APN showing T-MOBILE US then underneath epc.tmobile.com

If there's nothing then click the menu key on the bottom left and select New APN.

Either way make sure it matches these settings.

Name: T-Mobile US
APN: epc.tmobile.com
Proxy: Not set
Port: Not set
User name: Not set
Password: Not Set
Server: Not set
MMSC: http://mms.msg.eng.tobile.com/mms/wapenc
MMS proxy: Not Set
MMS: port: Not Set
MCC: 310
MNC: 260
Authentication type: None
APN type: Internet + MMS


Hope this helps.

Yep, everything matches. =(

* UPDATE *

I sent an MMS just fine, but SMS is still not working!

Originally Posted by mikeDCMDVA

My girlfriend has a Samsung Captivate and she can send me SMS/MMS but I cannot send her.

I have called AT&T Tech Support and also T-Mobile Tech Support, nobody can give me solid answers or resolutions.

Our workaround is to use that TiKL Touch2Talk Application for messaging, but this is simply annoying!

Anyone? Ideas? Also, anyone wish to PM me a phone number if they use AT&T so I can test with your line?

Thanks a lot guys,

Michael

here's a work around. remove the dashes from the contacts phone number when sending MMS.

I've had the same issue when my friend (on the iphone) and I try to send mms to each other.

Sent from my SGH-T959V using XDA Premium App

First, removing the dashes definitely does not work, lol.

IPhone also, that sucks, Mann I don't know where to turn for this one...

Sent from my SGH-T959V using XDA App

Originally Posted by mikeDCMDVA

First, removing the dashes definitely does not work, lol.

IPhone also, that sucks, Mann I don't know where to turn for this one...

Sent from my SGH-T959V using XDA App

I'm referring to sending MMS messages. MMS has always been an issue even on the Vibrant. Oh BTW! removing the dashes is one of the quick fix that you can do to fix the MMS sending issue! if you use the search bar you will see what i'm talking about... soo search around this forum instead of asking and laughing at the someone who is trying to help with your situation. I suggest go find help somewhere else!