[AT&T Samsung Galaxy S 4 General] MattMJB0188:
This is courtesy of XDA member Bajanman's thread on the AT&T Note 2 forum. Let's test these APN's out on the S4 and see what happens. Changing the APN is also a way to become unthrottled if you still have unlimited data from AT&T.

This is a guide for changing your apn for throttling issues or trying to get a better signal.

Here's a list of the ATT APN list that I put together. I have tested these some work with everything DATA,LTE,MMS,VOICE, ETC. And some of them were request from other members here. So I just posted what was asked for into one location. If they work for you keep them if not, just delete and keep the ones you'll b using. NEVER DELETE THE STOCK APN JUST IN CASE!

If I run across any others I sure to add them here.

If anyone has any that I missed let me know and I'll add them to the list...

#1.Go into setting, then more setting, mobile networks, then pick Access point Names.

#2. In order to enter a new APN, hit the left menu key. Pick New APN, then enter your APN setting as listed below. After that hit Menu again then save! Then you can select that Apn, by hitting the dot next to the new apn

Everyone's results will vary, pending on location...

Default Galaxy Note2 Apn setting! This is what comes stock on the phone!

Name: ATT PHONE

APN: phone

Proxy: ~Not set~

Port: ~Not set~

Username: ~Not set~

Password: ~Not set~

Server: ~Not set~

MMSC:http://mmsc.mobile.att.net

MMS Proxy: proxy.mobile.att.net

MMS Port: 80

MCC: 310

MNC: 410

Authentication type:

APN type: default,mms,supl

Tried this one also and everything works fine but it seems like it stays on H and H+ more often.

Name: AT&T TEST 1

APN: wap.cingular

Proxy: wireless.cingular.com

Port: 80

Username: ~Not set~

Password: ~Not set~

Server: ~Not set~

MMSC: ~Not set~

MMS Proxy: ~Not set~

MMS Port: ~Not set~

MCC: 310

MNC: 410

Authentication type:

APN type: default,supl,agps,fota,dun

Now this one connects to the network but it defaults back to the stock apn after a few minutes. Not sure if its just my phone or not so that's why I posted it anyway. Because someone had asked for it..

Name: AT&T TEST 2

APN: broadband

Proxy: wireless.cingular.com

Port: 80

Username: ~Not set~

Password: ~Not set~

Server: ~Not set~

MMSC: ~Not set~

MMS Proxy: ~Not set~

MMS Port: ~Not set~

MCC: 310

MNC: 410

Authentication type: ~Not set~

APN type: tether

Same thing with this one as to Test 2. Connects but then defaults back to stock!

Name: AT&T TEST 3 MM

APN: wap.cingular

Proxy: wireless.cingular.com

Port: 80

Username: Not set

Password: Not set

Server: Not set

MMSC:http://mmsc.cingular.com

MMS Proxy: wireless.cingular.com

MMS Port: 80

MCC: 310

MNC: 410

Authentication type: ~Not set~

APN type: mms,supl

Now this APN works just like the stock but may speed up your data, if your begin throttled from using to much DATA!

Name: AT&T TEST 4 HSDPA

APN: phone

Proxy: ~Not set~

Port: ~Not set~

Username: ~Not set~

Password: ~Not set~

Server: ~Not set~

MMSC: ~Not set~

MMS Proxy: ~Not set~

MMS Port: ~Not set~

MCC: 310

MNC: 410

Authentication type: ~Not set~

APN type: default,supl,agps,fota,dun

NO problems with this one either. Tested everything and all works great! Maybe a little faster pending on what area your in!

Name: AT&T TEST 5

APN: PTA

Proxy: ~Not set~

Port: ~Not set~

Username: ~Not set~

Password: ~Not set~

Server: ~Not set~

MMSC:http://mmsc.mobile.att.net

MMSC proxy: 66.209.11.32

MMS port: 8080

MCC: 310

MNC: 410

Authentication type: ~Not set~

APN type : default,supl,mms,hipri

For those on the straight talk plan...

Name: Straight Talk

Name: Straight Talk

APN: att.mvno

Proxy: not set

Port: not set

MMSC:http://mmsc.cingular.com

MMS Proxy: 66.209.11.33

MMS Port: 80

APN type: default,supl,mms,hipri

SOURCE: http://xdaforums.com/showthread.php?t=2172110