[FIX] AT&T SGS2 Data Speed Issue's (Correct APN Settings) - AT&T Samsung Galaxy S II SGH-I777

Hey all, hope this is the correct forum to post.
This is a Fix it guide I wrote for AT&T user's. These are the correct settings for your AT&T Samsung Galaxy S II
I hope this helps everyone who has been possibly experiencing slower speed's on AT&T Mobility.
1'st, make sure you are on the CORRECT data plan.
1. HSPA+ 4G 2GB plan OR for Unlimited Customer's
2. Smartphone Personal Data plan with 4G SOC code : HSDPPB
Then under your APN settings, I have found personally that WAP.CINGULAR is not the right APN. When your tethering you can tell what the correct gateway you should be connected to by visiting speedtest.net tethered to a PC and seeing when you run the test by your IP, it should show SERVICE PROVIDER and NOT AT&T GLOBAL NETWORK SERVICES.
Wap.Cingular connects you to the older gateway made for 7.2 phone's. I found in real world AT&T testing it caps/throttles you at around 7.5Mbit/s or slower.
FIX:
Under you Access Point Settings click on each APN you already have then in the menu, delete them.
Next create a new APN:
Menu Key, New APN.
Name : AT&T HSPA+
Important step: tap APN and enter exactly : phone
That's it! It's literally just "phone", not kidding. Leave everything else blank including Username and Password!
Scroll down to APN Type, Select Internet only
Hit the Menu Key, and hit SAVE
Your will return to APN settings, go to the APN you just created called AT&T HSPA+, tap the dot next to the APN and make sure it turns green!
Now for the MMS settings
Step 2 : MMS Settings
At the APN settings hit the menu key again and create a new APN, call it MMS
Under APN again just type : phone
go down to MMSC and fill the fields as follows
MMSC: http://mmsc.cingular.com
MMS Proxy: wireless.cingular.com
MMS Port: 80
MCC: 310
MNC: 410
APN type: MMS only
Now again hit the menu key and save. This will be your default MMS setting and you will not need to select it.
Once your back at the APN menu with the fields you just created, make sure AT&T HSPA+ still has a green got by it.
Now hit the home key, then turn your phone off and back on.
You should have full internet access if you have the correct data plan. While you may not experience faster data speed's in every area. This APN will allow you to have more consistent and through speed's, especially in an AT&T "4G" HSPA+ enhanced backhaul area.
Here show's the difference in the two APN's. The first SpeedTest is the Wap.cingular, the second is the one we just created.
Old APN:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
New APN: Better ping and better speed, Notice Service Provider vs. AT&T Gobal
If you guys have any questions feel free to ask me in the forum or PM me.
I really hope this help all of you Galaxy S 2 users on AT&T!!
UPDATE 07/17/2011 - Possible slow data speed explanation theory..
Ok. So I think I may have found a reason why the SGSII is slower than phone's like the Infuse and has so many radio problems.
You guys remember with the Apple iFail 3G through the iPhone 4 on AT&T and other GSM providers, with the severe signal issues and dropped calls??
It was later tied to the Infineon modem in the handset powering the devices..
http://news.cnet.com/8301-13579_3-10015301-37.html
Well unfortunately, stupid Samsung put an Infineon baseband modem chipset in the Samsung Galaxy S II's.
To me I have the SAME issue's I was having with the iPhone 4.... Coincidence or not?? You decide. But the SGSII has the chip, it is HSPA+ capable but of course since Infineon makes it, it likely cant hit H+ speeds.
http://www.wired.com/gadgetlab/2011/03/silicon-art-samsung/
The chip, the Infineon PMB5703, provides radio-frequency transmission and reception functions relating to the devices’ baseband and 3G features.
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i had to do this when i went from o2 to three lol but does need doing to make everything work ok

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Just tried it; my download speed has roughly 50% (4 Mbps to 6), but upload hasn't changed much. I'm in Duluth, GA, just outside downtown, and I don't think we've gotten HSPA+ yet. The Speedtest app results say it's a UMTS connection. However, the H+ icon on the phone stays on.
I've gotten HSPA connections at my office a few miles down the road in Norcross; I'll try it from there on Monday. The HSPA in Norcross isn't too fast -- I've never gotten more than 2.1 Mbps out of it.
FWIW, I'm on the old $30/month smartphone personal plan.

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WoW! Thanks - I just got a SGSII and spent 1+ hours on the phone with AT&T yesterday trying to get this info and I got nowhere with them - had me put in the same old wap.cingular. This is great

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Didn't experience any difference from the default and this here on the beach Miami, FL. Will try at a different place later.

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hmm does this mean i need think about dumping the medianet plan

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ph00ny said:
hmm does this mean i need think about dumping the medianet plan
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Click to collapse
For which application would you require10Mbps?

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g2tl said:
For which application would you require10Mbps?
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tethering and video streaming?

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ph00ny said:
tethering and video streaming?
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Ironically, those applications would almost require unlimited plan, not the 2GB (or 4GB tethering) plan.
Now you need to ask yourself, "Do I want to pay $25-$30 more per month for less allowance and slight bump in speed?"

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g2tl said:
Ironically, those applications would almost require unlimited plan, not the 2GB (or 4GB tethering) plan.
Now you need to ask yourself, "Do I want to pay $25-$30 more per month for less allowance and slight bump in speed?"
Click to expand...
Click to collapse
pretty much
even with some of the enterprise plans available in premier site, it still can't match it

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ill change the settings and test it throughout the day in the New York City area today and report my speeds at the end of the day

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marvinhemstock said:
i had to do this when i went from o2 to three lol but does need doing to make everything work ok
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Mine seemed to automatically fix the settings when i put in the three sim. Is there a special setting or something? How is your speed?

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It required that I put MCC and MNC values.
Then
Had no Internet connection whatsoever
Please guide
Thanks

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No difference in speeds at all for me here in the SF Bay Area which is an HSPA+ covered zone.
I am getting slower speeds on the SDS2 than the Infuse.

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I posted this a week ago when I took the settings from my infuse, had a few people say it didn't work for them but its been working great on my phone. Figures.

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Long Island today:
5824/1555
3734/2218
5016/2144
the signal isn't consistent. i'll get a very fast connection for awhile then it will drop back to mid 2's for download and 1.1-1.2 for upload.
Changing the settings made a big difference. I also have an atrix and swapping my SIM into the atrix (which has the same apn settings for default) yields similar results.

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Just tried this out, i can't seem to receive an MMS photo, it just says downloading.
*EDIT1* i seem to have no data at all now, gonna check to make sure i added everything correctly

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mchimney said:
Just tried this out, i can't seem to receive an MMS photo, it just says downloading.
*EDIT1* i seem to have no data at all now, gonna check to make sure i added everything correctly
Click to expand...
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I tried sending a mms and just sat at "sending"
Sent from my GT-I9100 using Tapatalk

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Many of us are on the $15 or $10 unlimited data non-smartphone plan. I'm assuming there's no way to use these HSPA+ settings without switching to an official "4G" smartphone data plan?

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I rechecked the settings 3 times now and i can't seem to get a data connection. I'm on the AT&T website right now trying to see if i have the right data plan but this site is so confusing it's hard to tell.
haha,
Just got off the phone with AT&T, after putting me on hold for 20 minutes they finally told me there's nothing they can do to help me get data back because i'm not on an AT&T phone. Trying to find my old atrix to copy the apn, hopefully that fixes it.
*EDIT2* Changed the APN type to wap.cingular and i'm finally showing the H+ and 3G notifications up top. Data speed is crazy slow however. I guess it doesn't like 'phone' as the apn type