Cingular SIM in AT&T phone

I bought a used and unlocked AT&T LG phone and am using a Cingular SIM in it. I thought everything was working fine until I realized I couldn't download ringtones or graphics, or use any web functions period. The phone has Mmode which is AT&T's web functions as opposed to Cingular's Media Mall. But I think since cingular and AT&T are now merged, shouldn't the web services be merged also. Is there any way I can fix this problem or am I out of luck? I bought this phone for my younger sister and was planning to give it to her as a birthday present. But now I'm afraid if I give it to her and she can't download ringtones or anything, or open any links, that she will be disappointed. Any help? Any suggestions appreciated, thanks alot.

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Originally Posted by Kjc2488

I bought a used and unlocked AT&T LG phone and am using a Cingular SIM in it. I thought everything was working fine until I realized I couldn't download ringtones or graphics, or use any web functions period. The phone has Mmode which is AT&T's web functions as opposed to Cingular's Media Mall. But I think since cingular and AT&T are now merged, shouldn't the web services be merged also. Is there any way I can fix this problem or am I out of luck? I bought this phone for my younger sister and was planning to give it to her as a birthday present. But now I'm afraid if I give it to her and she can't download ringtones or anything, or open any links, that she will be disappointed. Any help? Any suggestions appreciated, thanks alot.

There are setting in the phone that needs to be changed. if you goto Cingular website, under device support you can choose your phone and changes your settings to what it suppose to be for it to work on Cingulars Media Net. Let us know how it works out for you.