D6683 and LTE 800Mhz band radio - Xperia Z3 Q&A, Help & Troubleshooting

Hi, I want to find out whether D6683 have a hardware radio for the LTE 800Mhz band. I think other models (e.g. D6633) have it. I read that flashing D6633 firmware onto D6683 were buggy but can't tell if this is because of the differences in firmware or hardware.
If the D6683 have the radio hardware then it should just be a matter of software tweaking within the D6683 firmware, what procedures can I refer to for activating this LTE frequency? Thanks.

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basebands or stock roms for Sony Tipo ST21A2?

I have the US version of the Sony Tipo dual and I flashed the newest firmware for a Sony Tipo ST21i2 it works but I need a US baseband to use t-mobile data... does anyone know where I can either get the latest US stock rom or some US basebands it appears that flashing the rom might have changed the frequency bands on my Tipo or it might just be the rom can't access the 1900 AWS band I'd need for reframed T-Mobile data.
buzz86us said:
I have the US version of the Sony Tipo dual and I flashed the newest firmware for a Sony Tipo ST21i2 it works but I need a US baseband to use t-mobile data... does anyone know where I can either get the latest US stock rom or some US basebands it appears that flashing the rom might have changed the frequency bands on my Tipo or it might just be the rom can't access the 1900 AWS band I'd need for reframed T-Mobile data.
Click to expand...
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Use xperiaFirm....:angel:

Flashing d6616 baseband on d6633

Can any one try flashing tmobile firmware baseband on the d6633.T-Mobile uses bands 2, 4, and 12*as listed here; 4 is the most widely used band for them. The D6616 model, which is the one specifically for T-Mobile, supports these bands. 12 is the newest band and possibly the least used. There are many phones already on T-Mobile that don't support band 12 because it's the band they recently acquired from Verizon.
I could be wrong but this seems like a recipe for DISASTER.
I agree, its probably not a good idea.
Actually I've flashed d6633 firmwares from all over the world on a d6633 just want those t-mobile 700 band fq on the 6633!
Flashing firmwares from the same model is one thing but a different sub model is generally not a great idea.
If you have a D6633 why don't you contribute to the community and try this yourself?
se1000 said:
If you have a D6633 why don't you contribute to the community and try this yourself?
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With se1000 on this, if you are so confident that it has worked for you in that past. Get the phone and flash it, then report back
Flashing another models firmware does nothing to add/remove bands. There is a thread somewhere on XDA about enabling additional bands for devices utilizing Qualcomm chips but root and unlocked bootloader are required.

[Q] Sony Xperia D6683

Hello guys.
Pleas tell me if I can flash D6633 firmware on D6683. I've searched everywhere and there is no answer.
Thank you!
Yes
Sure you can!
I did for mine. D6683 running on D6633 firmware. It's ok.
Basically, the hardware of both devices is similar, the D6683 was modified to support Hongkong LTE network.
Can you tell me how to flash it? I tried with flashtool and it says that the firmware is not for this phone... or something like that. I have Locked Bootloader.
Thanks
How was this? Got a D6683 also.
I've managed to install IT. You download The firmware with xperifirm and create The ftf with flashtool v 0.9.18.6. Before you start The ftf creation just delete fwinfo from the downloaded folder. Then you flash the firmware. Flashtool won't recognize The d6633 but Will ask you what Phone you have. Select D66xx and IT starts.
So now your phone says it's a d6633? And there aren't any bugs? What are the prerequisites for using the flashtool to flash an ftf? Sorry just got this phone new(locked bootloader no root)
dangtung said:
Sure you can!
I did for mine. D6683 running on D6633 firmware. It's ok.
Basically, the hardware of both devices is similar, the D6683 was modified to support Hongkong LTE network.
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XeqtR0 said:
I've managed to install IT. You download The firmware with xperifirm and create The ftf with flashtool v 0.9.18.6. Before you start The ftf creation just delete fwinfo from the downloaded folder. Then you flash the firmware. Flashtool won't recognize The d6633 but Will ask you what Phone you have. Select D66xx and IT starts.
Click to expand...
Click to collapse
Have you tested the radio bands to see if they all work the same as a D6633? Curious as thinking of buying one, but the D6683 has less working bands.
D6683 LTE radio
Hi, I am also interested in finding out whether D6683 have a hardware radio for the LTE 800Mhz band. I think other models (e.g. D6633) have it. If D6683 have it then it should just be a matter of software tweaking, what procedures can I refer to for activating this LTE frequency? Thanks.
fredwck said:
Hi, I am also interested in finding out whether D6683 have a hardware radio for the LTE 800Mhz band. I think other models (e.g. D6633) have it. If D6683 have it then it should just be a matter of software tweaking, what procedures can I refer to for activating this LTE frequency? Thanks.
Click to expand...
Click to collapse
I think it may not work well, asked the same question in another thread:
http://forum.xda-developers.com/showthread.php?p=63032397
Hello,
does the LTE-Band 20 (800 MHz) work?
Thanks,
Tom
Would be unstable and probably not functional unfortunately
Hello
Is there one wants to experience the renovation Marshmallow D6633 to D6683 model?

Flashing Another Model's Modem ?

Hey Guys!
So I have just gotten an S7 (930S) and apparently, there is a mismatch between the bands present in the phone and the one offered by my network. I would like to know if I flash 930F modem on my phone would that be ok or not? I just want to flash the modem as well as the CSC of the 930F model. I hope someone can take the timeout to reply to my query.
Thanks
arsal_93 said:
Hey Guys!
So I have just gotten an S7 (930S) and apparently, there is a mismatch between the bands present in the phone and the one offered by my network. I would like to know if I flash 930F modem on my phone would that be ok or not? I just want to flash the modem as well as the CSC of the 930F model. I hope someone can take the timeout to reply to my query.
Thanks
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Yes you can, hardware is the same. However when you talk about network bands I assume your talking about the difference between networks using GSM and networks using CDMA? In which case you need to flash firmware which uses CDMA radios.
cooltt said:
Yes you can, hardware is the same. However when you talk about network bands I assume your talking about the difference between networks using GSM and networks using CDMA? In which case you need to flash firmware which uses CDMA radios.
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Well, when I am talking about Bands I am talking about the frequencies in which they operate. For example, my network offers the UMTS 900 frequency, but that frequency is missing from my current modem.
Therefore, I am assuming that if I flash the 930F model's modem, which does supoort the UMTS 900 frequency, I will be able to operate on the UMTS 900 frequency. Can you confirm me on that?
Or will I have to flash the 930F firmware on my phone to operate on the UMTS 900 frequency?
Sent from my SM-G935F using Tapatalk
Yes 930F will work and install the radios you require.
The problem I am facing right now is that although the modem (Shannon335) on my phone (G930S - Korean) is the same as that on the international model (930F). But my phone (G930S) does not support one of the bands that my network supports which is UMTS 900 and that band is supported on the international version , although hardware wise (both are Shannon335) they are both the same.
So, I was thinking if i change my modem, currently its a South Korean modem and flash the international version modem could it work and make the band work for me?
Sent from my SM-G935F using Tapatalk
arsal_93 said:
The problem I am facing right now is that although the modem (Shannon335) on my phone (G930S - Korean) is the same as that on the international model (930F). But my phone (G930S) does not support one of the bands that my network supports which is UMTS 900 and that band is supported on the international version , although hardware wise (both are Shannon335) they are both the same.
So, I was thinking if i change my modem, currently its a South Korean modem and flash the international version modem could it work and make the band work for me?
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Yes it should work
Thank You very much.
I would also like to know how should I choose and which modem to flash on my phone. Which things should I match and what to avoid during the flashing process. I have currently U1 security level modem, so when I flash another modem should it be U1 level as well?
Sent from my SM-G935F using Tapatalk
arsal_93 said:
Thank You very much.
I would also like to know how should I choose and which modem to flash on my phone. Which things should I match and what to avoid during the flashing process. I have currently U1 security level modem, so when I flash another modem should it be U1 level as well?
Sent from my SM-G935F using Tapatalk
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To avoid problems you must match the modem to the version of firmware you are using, so yes U1 to U1. Flash the modem separately via Odin

Unlocking the bands on an Indian 8T (KB2001) possible?

If I have an Indian 8T (KB2001), would I be able to install a global/beta ROM (if and when available) and be able to unlock the bands so that I can use it in USA? 5G bands (n71, n41 , n260, n261) and bands 66, 71 is not available in the Indian version but present in the US model.
Just wondering whether a software update would turn this on as I believe it's the same hardware but the software hides it? Just a wishful thinking on my part, of course.
Unlocking 5G-bands is not possible. Phone example missing mmwave-antennas so n260, n261 bands doesn't work and I think it's not ready for even low bands. n41 may work this model.
In US I recommend buy US-version of this phone.
i want to use n41 in Indian model KB2001. I am in Thailand using this device and not able to connect to 5G as AIS uses N41 Band. can you help me with unlocking N41 band on this model.. ANy guidance?
I bought indian version, also want to unlock other 5g bands.
Is it possible if I just change DA rom to AA?
coorior said:
I bought indian version, also want to unlock other 5g bands.
Is it possible if I just change DA rom to AA?
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No way unlock without recompile modem firmware... If i know right all unlocked variants (China, India, Global, US) have same modem firmware so rom changing doesn't help. But you freely try and report here.

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