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Posted Dec 27, 2011
1:28:23 PM
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Using a "3G" SIM card in a Samsung Infuse 4G?

Hi,

 

My wife recently switched to an iPhone, leaving me with a Samsung Infuse 4G.  I have an old Nokia XpressMusic, and figured I'd give this new phone a try.  My existing SIM card is labeled "3g".  I tried placing it in the Infuse 4G, and the phone portion certainly works, but I cannot access any network services.

 

I'm guessing this is because my old phone is 3G and works off of the AT&T Media Net GPRS network, and the new phone can't operate in this way.  Or is there a way to make this work?  I'd love to use this new phone, but I don't want to have to upgrade my current plan.  I don't really care about speed, I just want to be able to check email while I'm out and about.

 

Thanks for any help that you can provide!

Using a "3G" SIM card in a Samsung Infuse 4G?

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Dec 27, 2011 1:31:47 PM
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Professor

You need a smartphone data plan in order to use any smartphone on AT&T.

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Dec 27, 2011 1:35:54 PM
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OK, I figured as much.  So there's no way to enable an older, slower network access mode with this new phone?

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Dec 27, 2011 1:42:28 PM
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You should be able to use the SIM card, but need to activate a data plan. If not, you can go to any AT&T store and pick up a new SIM card, usually for no charge.

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Dec 27, 2011 1:51:05 PM
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Thanks, Max. 

 

To clarify, I already have a data plan on the existing account, but I'm guessing AT&T is smart enough to block smart phones from being able to use the older data services.  I just wanted to check to see if there was anything I was missing. Smiley Happy

 

Thanks again.

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Feb 11, 2012 2:06:36 PM
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The problem is ONLY that you APN setting are wrong.

"Google" APN setting AT&T

and you'll find some tutorials.

 

When you put a 3G sim into a 4G card the APN gets

dummied up.  Probably done on purpose by the MAN.

 

I've successfully fixed this moving a 3G sim to a Samsung (?) w/Keyboard.

I even get 4G data packets.  AND I'm on PREPAID to boot!!! :-)

 

Wish me luck that they don't track me down and disable my account!
:-)

Joe F

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Feb 12, 2012 1:48:29 PM
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Employee
The old non smartphone data plans use the wap. cingular APN and your phone is set up to use the PHONE APN. you need a smartphone data plan because even if you go around it they'll catch on and add it anyways
*I am an AT&T employee and the postings on this site are my own and don’t necessarily represent AT&T’s position, strategies or opinions.

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Feb 13, 2012 7:23:46 AM
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JFizDaWiz wrote:
The old non smartphone data plans use the wap. cingular APN and your phone is set up to use the PHONE APN. you need a smartphone data plan because even if you go around it they'll catch on and add it anyways

Would he also need to get re-provisioned to go from the 3G network to the 4G?

 

I know that was an issue for me when I went from my Captivate to the Infuse. Although I already had the "smartphone data plan."

 

 

 

Sent from my Android powered Samsung Galaxy Note 4G LTE

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Feb 13, 2012 8:36:27 AM
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Does pre-paid vs post-paid make any difference?

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Feb 13, 2012 8:52:40 AM
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atandtforumjoef wrote:

Does pre-paid vs post-paid make any difference?



It's been a while since I had  a Go Phone account, but I wasn't sure if Go Phones have 4G phones available?

 

Now I'm pretty sure you can take a 4G phone, but it outright, and use it on the account, but I'm thinking a problem could arise if the phone is always seartching for a 4G signal when you SIM Card is not provisioned nor the account is set up for it.

 

Looking on the website I didn't see any "official" 4G phones for sale.

Sent from my Android powered Samsung Galaxy Note 4G LTE

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