Originally Posted by PatienceWithin
JESUS I feel smarter already after reading that! Now would you happen to know what MPN version of the N9005 that supports At&t or that information MIA?
I am not sure if there is a SM-N9005 which will work on AT&T. I think that there is a specific model called SM-N900T or something like that. And I think that that model only has one MPN firmware - it's own AT&T firmware. But I'm not sure at all about this.
I don't know a lot about AT&T but there is a specific thread here on XDA about that phone and carrier.
If AT&T uses one of the frequencies listed in the link to Qualcomm which I posted, then, yes, you can use the SM-N9005 on AT&T. But... to do that you will need to:
1. Find out which frequencies AT&T uses (the band numbers and not the MHz frequencies)
2. Find out from my link if those bands are native in the Qualcomm chip.
3a. Find which MPN has the right modem.
4a. Flash that MPN with a programme called Odin (you will need specific, detailed instructions to do this, which you can find online)
5. Find the correct AT&T APN (data access points)
6. Set up that APN in your phone (you will need specific, detailed instructions to do this, which you can find online)
3b. Find the correct CSC portion of the MPN firmware (the CSC is that part of the MPN which carries inside the modem specifications - Carrier Specific Code).
4b. Flash only the CSC with Odin
5. & 6. should not be necessary
3c. Find the correct modem and radio.
4c. Flash that modem/radio in the CSC portion of the MPN firmware with Odin
5. & 6. Will be necessary
3d. Find the factory "service mode" number. This is a simple number prefixed and postfix by #* which you simply type on your keyboard, as if it were a phone number.
4d. Once you access service mode, enable the correct modem (hoping that it's resident, but it should be if point 2 was a YES).
5. & 6. Will be necessary
I need bands 1, 2, 8 and 20 for my carries (I live in 2 countries at the same time).
I tried to find the "service mode" code but couldn't find it.
I tried to find the right radio/modem which operates those bands but couldn't find it.
I tried to find the right CSC that carries those bands but couldn't find it.
I tried to find the correct MPN that carries those bands but couldn't find it.
So now I'm flashing different MPN (firmware versions) hoping that one will, sooner or later, contain those bands.
If you can find the codes to access service mode or which modem or CSC or MPN carry your AT&T bands and those bands are supported by the Qualcomm chip, then it's a piece of cake!
You only need one of those methods as the MPN contains the CSC which, in turn, contains the modem which, in turn, can enable/disable bands.
All you need, in theory, is to enable the correct bands if the Qualcomm chip hardware supports them.
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Italians do it better... !