Wrong motherboard?

[kkruse1035]

I bought a refurb ATT S3 on ebay and was trying to upgrade to 4.3. While in ODIN it says the model is sgh-t999 (T-Mobile).

Does this indicate that I don't have an i747 motherboard? The phone indicates its an i747 in android?

Thanks

 

[Paul627g]

Sounds like being a refurb they swapped out the motherboard from a T-Mo S3. It should function without problem since T-Mo & AT&T are both GSM based carriers there shouldn't be any radio/modem based issues on the motherboard. The rest should for the most part be universal between the S3's motherboards.

 

[kkruse1035]

It's works, but only 3G. Is the t999 motherboard able to receive att lte? I have read conflicting posts. I tried flashing the att modem, didn't work.

Thanks

 

[GTWalling]

If it is a T999 mother board it will not be able to use AT&T's LTE. Different frequency.