Activating Band 71 on ATT S9? - Samsung Galaxy S9 Questions & Answers

I have a ATT S9, and since the hardware across the carriers are the same, will flashing my att phone to that of Tmobile or unlocked firmware unlock band 71? Thanks.

IT shoudl be enabled when you insdert the tmo sim

Thank you. I just flashed the unlocked firmware and can confirmed that band 71 was activated for tmobile.

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How to flash n910f rom on n910p and enable LTE band 3(1800)

i have note 4 n910p sprint version but its lte band not supported in my country network band so n910f model lte work fine here so i want to convert my n910p to n910f .... can anyone tell me how to do this..
Atif61 said:
i have note 4 n910p sprint version but its lte band not supported in my country network band so n910f model lte work fine here so i want to convert my n910p to n910f .... can anyone tell me how to do this..
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Yes i have the exact same question,,, can we do this?? because non of the custom roms are supporting 4G even after manually updating the apns... any idea please?
i think you have to mess with the processor NV value or something.There is a unlock LTE bands thread here somewhere.It only unlocks LTE bands for Qualcomm based phones.Doesn't not add new bands that were not there to begin with but just unlocks them.LTE Apn's won't work unless the band is avaliable, you will just get HSPA or HSPA+.Note 4 snapdragon does have band 3 support, so you're in luck but the process is very risky as it involves editing the heart of your device.I was about to do it but it was too risky lol.Lots of people have had success with the unlocking, notiably Samsung users.

Flashing Verizon SM-G960U to other Variants

Hello, I have a Galaxy SM-G960UZKAVZW, The Verizon model, and it is unlocked. I use this phone GSM in Peru, but It noticed that I can not switch freely between 4G and 3G like I could in a S8 Tmobile model.
So I have to Flash other firmware, if it is possible, I don't want any carrier logo so I need to know what firmware I have to choose. I looked into Sammobile for G960U and found:
Spint (cdma) (SPR)
USA (TMK) MetroPCS
USA (USC) US Cellular
USA (T-Mobile) (TMB)
USA (Verizon) (VZW)
Unknown (BST) Bosst Mobile
Unknown (CCT)
Unknown (XAS) Sprint XAS
Virgin Mobile USA (VMU)
What firmware I have to choose, or I need to choose a G960U1?
Then, I have to do wipes?
Thanks.
Use the one for the SM-G930U1 with CSC code XAA and flash with the modified odin found here on the forums

Can Unlocked T-Mobile S9 Used on Sprint

Can a unlocked Galaxy S9 with U1 firmware be activated and unlocked on sprint?
I've looked up all the bands and radios and it does have it.
As far as I know it should work fine. The US version of the GS9 should work with CDMA or GSM.

Need to install T-mobile software on AT&T Unlocked Note 10+.

I bought a new AT&T Note 10+ from someone and then unlocked it. I have T-Mobile as carrier. I can use it with t-mobile for general use. But I am reading there are some features that wont work even with this generation of phones. Such as VoLTE and Video Chat and may be small other features . Also Voice mail default T-mobile app wont work either.
When I search I find many people have Flashed their phones with T-Mo firmware on Samsung unlocked devices. But i could not find any reference to T-Mo downloaded on a AT&T unlocked phone.
Any suggestions. If it is possible to wipe out AT&T from it and make it a T-Mobile operating system.
Thanks.
I have a At&t Note 10+5g and running latest update from T-mobile using Frija to find the latest firmware and Odin to flash the firmware to the phone.
Download manual samfrew.com or change csc
JAMRZ69 said:
I have a At&t Note 10+5g and running latest update from T-mobile using Frija to find the latest firmware and Odin to flash the firmware to the phone.
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I am thinking about doing this. Just to confirm you have a galaxy note 10+ N975U from ATT and you're getting 5G through Tmobile on Band 71?
U might want check ur model numbers as n975u is not 5g.
seventyfive said:
I am thinking about doing this. Just to confirm you have a galaxy note 10+ N975U from ATT and you're getting 5G through Tmobile on Band 71?
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No I have a Galaxy Note 10 5g model number SM-N976U and I am running latest T-mobile firmware feb.security patch ATA6 and still have 5g dont know which band but 5g is definitely there and yes it's an AT&T carrier locked phone.
FtaWolf said:
U might want check ur model numbers as n975u is not 5g.
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Click to collapse
It's wierd because T Mobile isn't mm wave 5G, it runs on Band 71 which e n975u supports. So I'm trying to figure out if it's possible to get 975u to do 5G on Band 71.
JAMRZ69 said:
No I have a Galaxy Note 10 5g model number SM-N976U and I am running latest T-mobile firmware feb.security patch ATA6 and still have 5g dont know which band but 5g is definitely there and yes it's an AT&T carrier locked phone.
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Thanks for the fast reply!
You'll need to flash the combination firmware and use Realterm to change the CSC from ATT to TMB, I think I saw instructions for multi csc device changing, should work for your device as well.
---------- Post added at 06:03 AM ---------- Previous post was at 05:51 AM ----------
Try *#272*imei# to change your csc.
seventyfive said:
It's wierd because T Mobile isn't mm wave 5G, it runs on Band 71 which e n975u supports. So I'm trying to figure out if it's possible to get 975u to do 5G on Band 71
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Tmobile uses a mix of mmwave and band n71.
And the band 71 thing is a bit more then that. They list it as band n71.. which (after reading on it) is not setup the same as band 71. Guess you can think of it like how wifi 6 works.
The n975u and n975u1 just don't have the hardware support for accessing/using band n71
I got frustrated searching for T-Mobile SM-N976U but just got AT&T unlocked SM-N976U. Thiniking of flashing T-Mobile firmware. Thank you OP for the forum, else I would have been stuck on AT&T firmware.
Install TMB on ATT N976U
JAMRZ69 said:
No I have a Galaxy Note 10 5g model number SM-N976U and I am running latest T-mobile firmware feb.security patch ATA6 and still have 5g dont know which band but 5g is definitely there and yes it's an AT&T carrier locked phone.
Click to expand...
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====================================================================================================================================
Please how did you get this done? I have the same AT&T Note 10+ 5G and I'm trying to install TMB firmware on it. Can you please guide me though how to do this or if there's a thread with instructions ?
So what I did chronologically is:
***TRY AT YOUR OWN RISK!! ******
Used odin (Odin3_v3.14.1_3B_PatcheD)
April 2020 Patch from T-Mobile
https://www.tmonews.com/2020/04/t-mobile-galaxy-note-10-5g-one-ui-2-1-s20-plus-ultra-update/
Downloaded SM-N976U_1_20200327132241_e87rcke8xl_fac.zip file which contains
AP_N976USQU1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT_meta_OS10.tar.md5
BL_N976USQU1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
CP_N976USQU1BTCB_CP15495521_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
CSC_OMC_OYN_N976UOYN1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
HOME_CSC_OMC_OYN_N976UOYN1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
USERDATA_TMB_N976USQU1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
Flashed using Odin and used CSC.. Did pot use HOME CSC
**Phone gets wiped out**
I searched and found user @tyrone1 who listed the followings.
Phone still booted with AT&T logo..after skipping all stuffs..I wrote down my IMEI number.
used *#272*IMEI NUMBER# the screen gave me two choices
Sales code and Network Change or
Only Network Change
I chose Sales code & Network Change
Next screen I was able to select TMB.. ( It also showed different carrier)
Once I select that the phone restarted.. I popped my T-Mobile SIM in
The screen splashed with T-Mobile..
I check the video call and worked like a charm!!!
Good Luck..
ATT Locked phone to work on tmobile
visualpro said:
So what I did chronologically is:
***TRY AT YOUR OWN RISK!! ******
Used odin (Odin3_v3.14.1_3B_PatcheD)
April 2020 Patch from T-Mobile
https://www.tmonews.com/2020/04/t-mobile-galaxy-note-10-5g-one-ui-2-1-s20-plus-ultra-update/
Downloaded SM-N976U_1_20200327132241_e87rcke8xl_fac.zip file which contains
AP_N976USQU1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT_meta_OS10.tar.md5
BL_N976USQU1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
CP_N976USQU1BTCB_CP15495521_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
CSC_OMC_OYN_N976UOYN1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
HOME_CSC_OMC_OYN_N976UOYN1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
USERDATA_TMB_N976USQU1BTCB_CL18243390_QB30093623_REV00_user_low_ship_MULTI_CERT.tar.md5
Flashed using Odin and used CSC.. Did pot use HOME CSC
**Phone gets wiped out**
I searched and found user @tyrone1 who listed the followings.
Phone still booted with AT&T logo..after skipping all stuffs..I wrote down my IMEI number.
used *#272*IMEI NUMBER# the screen gave me two choices
Sales code and Network Change or
Only Network Change
I chose Sales code & Network Change
Next screen I was able to select TMB.. ( It also showed different carrier)
Once I select that the phone restarted.. I popped my T-Mobile SIM in
The screen splashed with T-Mobile..
I check the video call and worked like a charm!!!
Good Luck..
Click to expand...
Click to collapse
First of all, you are a gentlemen and a scholar!! all this worked
AND i like to add the following to carrier unlock your phone.
the *#272# imei # thing does work to switch back and forth from att to tmo to att.
I got att locked phone and want it to work on tmobile. A lot on swappa going for MUCH cheaper than the tmobile phone!
went here to follow link to ask att for carrier unlock code
https://www.usmobile.com/blog/how-to-unlock-your-phone-from-any-carrier/
it says you'll get the unlock code in 24-48 hours. I got it in 15 seconds. well took me longer to log in and check status!
I flashed everything per @visualpro instructions. everyhting worked except the pop...i'm on tmobile. it said invalid sim. to me that said FU, i'm carrier locked and you on tmobile. so i did the *#272 thing went back to att. rebooted and it asked me for carrier unlock code. inserted carrier unlock code that i got instantly.
it unlocked and i did the *# thing and went back to tmobile and everything is all good to go!!
This was originally a att note 10+ 5g, as you can see it's now a TMobile unit!!
That's great it all worked out!!.. My mistake that I didn't specify mine that it was already unlocked AT&T phone. That was cool when you use *#272 imei and went back and unlocked it Credit goes to user @tyrone1 for that tip!
I was simply frustrated with higher T-Mobile prices on Swappa and after searching XDA many time, got the AT&T variant. On Samsung page it would show was Galaxy Note10+ 5G 256GB (AT&T) MODEL NUMBER: SM-N976UZKAATT.. but as long I'm getting fully T-mobile features, I'm all set
visualpro said:
That's great it all worked out!!.. My mistake that I didn't specify mine that it was already unlocked AT&T phone. That was cool when you use *#272 imei and went back and unlocked it Credit goes to user @tyrone1 for that tip!
I was simply frustrated with higher T-Mobile prices on Swappa and after searching XDA many time, got the AT&T variant. On Samsung page it would show was Galaxy Note10+ 5G 256GB (AT&T) MODEL NUMBER: SM-N976UZKAATT.. but as long I'm getting fully T-mobile features, I'm all set
Click to expand...
Click to collapse
That's what I was saying too. On swappa they a premium for the tmobile version. Almost 100 bucks more. I got mine for 100 less than the cheapest tmobile one and it had 2 cases and a 512 SD card for 600 bucks. I saw the regular note 10 going for 690 lol.
Love xda!!!
Do I need to enter developer mode and enable USB debugging or anything before I do these steps with the 10 plus 5g? Also got the 10 plus non 5g can I do this to skip going to u1? Can I just flash from u att to u tmo and then do the IMEI trick or do I still need to go u1 first? Thanks
Can anyone confirm which 5G bands they have got working with this switch, also looking to bring AT&T SM-N976U over to T-Mobile.
Thanks.

S20 Wireless Bands and Firmware

Sorry newbie here.
Do all US s20 variants (Verizon, ATT, Sprint, Tmobile) the same hardware to access all cellular bands if the correct firmware is installed?
For example.... If I had a ATT s20 and flashed the firmware to Sprint would I be able to access all of the bands required for Sprint like CDMA?
Thanks!

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