Unlocked ATIV S (I8750) on AT&T - How To Activate?

winutils

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Jan 30, 2013
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I just received my ATIV S from Negri (took 2 days - no issues) and I have an AT&T Micro-SIM, however now I am stuck trying to activate it on AT&T. I had no problem before with other unlocked phones but AT&T claims the Ativ S (Samsung I8750) phone does not exist in their database so they cannot activate it on their network. I would appreciate anyone giving me an idea of how to proceed!
 

Jnbs

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Since you are on contract you should register your previous phone and then insert the SIM card into the ATIV S then the system will recognize the phone automatically.. After that your service should work without problems :D (AT&T Rep here)..
 

winutils

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That would be a great idea, however the old phone has a normal SIM and the ATIV S has a Micro SIM. I was hoping that there was an activation sequence (##...#) that would work. I was surprised that AT&T did not have the model in their DB considering it is already in Canada, eh.
 

crystal_planet

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Actually I had the same problem with an unlocked HTC 8S on a carrier here in Canada. I tried to get it to work on line and no go, then I called tech support and said the 8S is not supported and there is nothing they could do. This was Telus, and I came from a Lumia 800, which uses the same sim card type.

Ironically, I had to go with the Ativ.
 

Podunks

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Actually I had the same problem with an unlocked HTC 8S on a carrier here in Canada. I tried to get it to work on line and no go, then I called tech support and said the 8S is not supported and there is nothing they could do. This was Telus, and I came from a Lumia 800, which uses the same sim card type.

Ironically, I had to go with the Ativ.

How "unfortunate" for you...
If only that was a dilemma here in the states...
 

crystal_planet

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How "unfortunate" for you...
If only that was a dilemma here in the states...

It was the only WinPhone 8 available on my carrier. Samsung is odd. The Ativ S is available on every nation wide carrier in Canada, but is absent in the entire US. I don't understand the reasoning.
 

saket87

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Since you are on contract you should register your previous phone and then insert the SIM card into the ATIV S then the system will recognize the phone automatically.. After that your service should work without problems :D (AT&T Rep here)..

Hi
I am on the same boat too but I use a Lumia920 and have the same problem.
but I don't understand what registering is. I could try that.
I removed the sim today from 920 to ativ s, so don't know what to do
thanks
 

Jourdansway

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My micro SIM card was actually punched out of a regular SIM card. The seller gave me the remaining piece. My samsung tablet does not show the balance so I was able to put the micro SIM back into the original, slide it into my phone and check the balance. A store that sells micro SIM cards probably has something you could use to do this.
 

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