unlocking LTE bands - Redmi Note 9S / Note 9 Pro (Indian Model) Question

Hello,
Just curious if anyone has tried to unlock LTE bands for north america on this phone yet. I'm considering getting one.
Thanks!

realist123 said:
Hello,
Just curious if anyone has tried to unlock LTE bands for north america on this phone yet. I'm considering getting one.
Thanks!
Click to expand...
Click to collapse
No way to unlock not available band.
LTE band are hardware buried and secured.

realist123 said:
Hello,
Just curious if anyone has tried to unlock LTE bands for north america on this phone yet. I'm considering getting one.
Thanks!
Click to expand...
Click to collapse
Well this is Qualcomm I think it is possible to unlock bands, theres some threads in XDA like this ones:
https://forum.xda-developers.com/mi-5/how-to/progress-trying-to-unlock-bands-t3337476
https://forum.xda-developers.com/oneplus-one/general/guide-unlock-aditional-bands-qualcomm-t2877031
But phones supposed to be unlocked and should work with most of the LTE bands in US, but not CDMA.:good:

realist123 said:
Hello,
Just curious if anyone has tried to unlock LTE bands for north america on this phone yet. I'm considering getting one.
Thanks!
Click to expand...
Click to collapse
Hi, did you get one of these phones yourself and any success in unlocking lte bands?

Bands are either supported or unsupported, enabled or disabled. All this is tied to hardware (the supported part), or oem default settings (the software part). I once had a mediatek phone that was capable of supporting some bands but they were disabled on the stock rom. Entering engineering mode I could enable (tick some checkboxes) and the phone could now operate using the newly activated bands. However, there were also many more bands in that menu that were permanently greyed out and it was impossible to tick their checkboxes. These are not supported by the hardware in the phone.
I believe the redmi note 9 pro as well as other phones should basically operate in the same way but I don't know any way to access the baseband/modem settings in Qualcomm as we could using mtk engineering mode.

twistyplain said:
Bands are either supported or unsupported, enabled or disabled. All this is tied to hardware (the supported part), or oem default settings (the software part). I once had a mediatek phone that was capable of supporting some bands but they were disabled on the stock rom. Entering engineering mode I could enable (tick some checkboxes) and the phone could now operate using the newly activated bands. However, there were also many more bands in that menu that were permanently greyed out and it was impossible to tick their checkboxes. These are not supported by the hardware in the phone.
I believe the redmi note 9 pro as well as other phones should basically operate in the same way but I don't know any way to access the baseband/modem settings in Qualcomm as we could using mtk engineering mode.
Click to expand...
Click to collapse
Hi, we can access this using QPST and QXDM. I am going back to flash MIUI 12 and give it another try.
Thanks for your input.

Related

I unlocked more LTE bands on VS985

I unlocked some others LTE bands on VS985, I tried other tips from Sony Xperia forum with no success and now just with hiddenmenu it work, for that:
1. Download Shortcut Master (lite) from play store
2. Top right -> App Explorer ->Verizon Hidden Menu
3. go to -> LTEBandSelection tap and select Launch
4. Now choose all Bands and Save and reboot
Need ROOT
That's all
This sounds cool in theory, but I'm skeptical. Not every VZW LTE tower uses every band. Different locations may even require specific bands. I'm not sure of the implementation details but our modems negotiate connections with towers, and this includes which band and channel within the band to use. If you enable all bands all the time, you're making your phone scan more frequencies, which takes more time and therefore increases battery usage.
b0bj0e said:
This sounds cool in theory, but I'm skeptical. Not every VZW LTE tower uses every band. Different locations may even require specific bands. I'm not sure of the implementation details but our modems negotiate connections with towers, and this includes which band and channel within the band to use. If you enable all bands all the time, you're making your phone scan more frequencies, which takes more time and therefore increases battery usage.
Click to expand...
Click to collapse
No, not all bands, only 2 bands, BANDS 3/7 which it's the most used in europe
Do you get signals on these bands? Could just have software support because most of the software is shared between versions, but not have hardware support at all.
scy1192 said:
Do you get signals on these bands? Could just have software support because most of the software is shared between versions, but not have hardware support at all.
Click to expand...
Click to collapse
Yes I have 4g now, and in France most used band is 3 (1800mhz) and I get it
Just wanted to say thanks for this
Sent from my VS985 4G using Tapatalk
Either lollipop changed or something else changed. The app crashes on the App Explorer function
Anyone know what stock bands were set at? I forgot to look before I checked them all. vs985 here. Thx
gatorstew said:
Anyone know what stock bands were set at? I forgot to look before I checked them all. vs985 here. Thx
Click to expand...
Click to collapse
Band4 and Band13 are default for me. Verizon G3 stock ROM. Roll Tide.
Thanks
kroukes2000 said:
I unlocked some others LTE bands on VS985, I tried other tips from Sony Xperia forum with no success and now just with hiddenmenu it work, for that:
1. Download Shortcut Master (lite) from play store
2. Top right -> App Explorer ->Verizon Hidden Menu
3. go to -> LTEBandSelection tap and select Launch
4. Now choose all Bands and Save and reboot
Need ROOT
That's all
Click to expand...
Click to collapse
Hello.
without ROOT, impossible to use more LTE band?
I am currently using VS985 in Korea(South) with 3G mode only because of Korean SIM.
Really want to use LTE in here.
Thanks.
yebbijun said:
Hello.
without ROOT, impossible to use more LTE band?
I am currently using VS985 in Korea(South) with 3G mode only because of Korean SIM.
Really want to use LTE in here.
Thanks.
Click to expand...
Click to collapse
No for this app you need root. You should just root. Its very easy and will allow you to activate the other bands.
This thread/mod isn't getting much play it seems. Is there really any benefit from this in the US? Or will it drain battery looking for the other bands?
Works good
Thank you so much for sharing :good:
I am using vs985 verizon in pakistan. Service provider is warid. Coustomer service told me that they're offering 4g on band 3, 1800mhz
So i unlocked band 3 by using this method. works like a charm
Thanks again
Good looks on this! I did it for the hell of it. Might as well have all 4 bands selected
gatorstew said:
This thread/mod isn't getting much play it seems. Is there really any benefit from this in the US? Or will it drain battery looking for the other bands?
Click to expand...
Click to collapse
Very good question...!!
Here is a link to LTE bands by country/region if anyone needs/wants it: http://en.wikipedia.org/wiki/List_of_LTE_networks
It's wikipedia though, so it may not be 100% accurate.
Ok but what bands does this actually unlocked vs those already in us for a specific region...
I ask this b/c in my limited theory, one could unlock said bands and theoretically use the phone on diff bands/carriers without having to go thru the hassle of 'begging' for a carrier unlock, correct? Essentially you could create your own carrier unlocked and/or international compatible G3... But I may be completely ass backwards wrong.... lol
kinfolk248 said:
Ok but what bands does this actually unlocked vs those already in us for a specific region...
I ask this b/c in my limited theory, one could unlock said bands and theoretically use the phone on diff bands/carriers without having to go thru the hassle of 'begging' for a carrier unlock, correct? Essentially you could create your own carrier unlocked and/or international compatible G3... But I may be completely ass backwards wrong.... lol
Click to expand...
Click to collapse
3 and 7
kinfolk248 said:
Ok but what bands does this actually unlocked vs those already in us for a specific region...
I ask this b/c in my limited theory, one could unlock said bands and theoretically use the phone on diff bands/carriers without having to go thru the hassle of 'begging' for a carrier unlock, correct? Essentially you could create your own carrier unlocked and/or international compatible G3... But I may be completely ass backwards wrong.... lol
Click to expand...
Click to collapse
The vs985 is already carrier unlocked, but I get what you're asking. And I think that, yeah, if you know the bands in the country/region you're in you can unlock those bands to get 4g working there. Post #14 is a good example of that. I believe bands 3 and 7 are used for global lte, which would be why his/her carrier told him to use band 3 for lte in Pakistan.

[Q] Change GSM radio bands on SM-R750A

Hi,
I have an unlocked SM-R750A which I'm using outside of the US. My carrier is using 900/2100 3G bands as opposed to the 850/1900 supported by ATT.
Is there a way to change and have it supported the other bands?
Thanks!
I have same problem !!!
is there any way to make it ??
No. Sorry guys. The hardware as it was tested by the Federal Communications Commission seems to show that there were several different versions with different radios.
I hate that Samsung did it but they definitely made separate US GSM editions, and a separate international edition, and separate CDMA editions, even though the Qualcomm S400 supports world bands including GSM/CDMA multi band support. Samsung was being sneaky and didn't do that.
is there any news on changing 3G bands?
Try this
Ura535 said:
is there any news on changing 3G bands?
Click to expand...
Click to collapse
Put watch into airplane mode and power down.
With watch off, pull the sim card then restart watch
Open the phone app and enter *#2263#
Select the band you want and swipe down on the screen
Power down the watch
Replace the sim card and power on the watch
Turn off airplane mode.
Depending on your watch version this might work for you.
Hello i have the same but different problem..I received mine(R750A) on 850/1900 instead of 900..Maybe we can swap if you dont mind.

Did anybody check for hidden LTE bands yet?

Run a test (no risk involved here, as this is just the test, not the permanent unlock) e.g. on a T-mobile H901:
Enter 277634#*# on your num pad, then select Field Test, Modem Settings, LTE Band Selection and then check what happens if you press BAND 20 (success or fail?). If it is success, then there could be the possibility to unlock band 20 on a H901.
See the same subject on the G4: http://forum.xda-developers.com/g4/general/guide-enabling-lte-bands-t3137818
I'd bee keen to see if any of the released models supports B28 (one of the bands on 700mhz)
Doesn't the T-Mobile V10 already support band 20? It lists it in their specs.
What I'd be curious about is Band 17 for better AT&T compatibility on the H901. I will probably get mine tomorrow so I can test more.
-Collin-
Hey, can't find where to check LTE bands in that menu.
That menu does not exist on US variants (I can guarantee the T-Mobile variant, but probably goes for all of them, just like the G4). The T-Mobile variant in DFS will show up 2, 3, 4, 5, 7, 12, and 20 as active bands. DFS can't write back to the phone for some reason, so you can't manually activate more bands, but with a SIM unlock and the other carrier's SIM it should auto-activate the other bands. In case someone wants a picture version:
TheJesus said:
That menu does not exist on US variants (I can guarantee the T-Mobile variant, but probably goes for all of them, just like the G4). The T-Mobile variant in DFS will show up 2, 3, 4, 5, 7, 12, and 20 as active bands. DFS can't write back to the phone for some reason, so you can't manually activate more bands, but with a SIM unlock and the other carrier's SIM it should auto-activate the other bands. In case someone wants a picture version:
Click to expand...
Click to collapse
I thought the hardware of the phone determined what bands are available. Is it really something that, if you could write back to the phone, could be turned on with the flip of a switch? Either way, that's still pretty interesting.
ubergeek77 said:
I thought the hardware of the phone determined what bands are available. Is it really something that, if you could write back to the phone, could be turned on with the flip of a switch? Either way, that's still pretty interesting.
Click to expand...
Click to collapse
All the US variants share the same hardware. If we could write back, all bands the chipset supports would be active.
Sent from my LG-H901 using Tapatalk
TheJesus said:
All the US variants share the same hardware. If we could write back, all bands the chipset supports would be active.
Sent from my LG-H901 using Tapatalk
Click to expand...
Click to collapse
Very interesting. I think I'll take a look at this utility once I get my phone unlocked to see if any new ones open up.
Has anyone tried unlocking hidden bands on the H961n version?
newbie1974 said:
Has anyone tried unlocking hidden bands on the H961n version?
Click to expand...
Click to collapse
I would be also very interested in activating lte band 20 on the h961 version of the phone. Any suggestions?
Can anyone run this on verizon variant and confirm its bands?
newbie1974 said:
Has anyone tried unlocking hidden bands on the H961n version?
Click to expand...
Click to collapse
I am also interested, since I bought one and I am stuck on 3G, because the band 4 is which the most carriers in Alberta- Canada utilize. Any updates on that? Is it possible to enable hidden bands on H961N variant?
TheJesus said:
That menu does not exist on US variants (I can guarantee the T-Mobile variant, but probably goes for all of them, just like the G4). The T-Mobile variant in DFS will show up 2, 3, 4, 5, 7, 12, and 20 as active bands. DFS can't write back to the phone for some reason, so you can't manually activate more bands, but with a SIM unlock and the other carrier's SIM it should auto-activate the other bands. In case someone wants a picture version:
Click to expand...
Click to collapse
Menu does exist on H901. Use this code..
*#546368#*901#
However, i get success when i select Band 20 but getting no signal.
ATT model user, try *#546368#*900# to see you can get into that menu.
Same for me. No signal after LTE20 selection.
Great find for the menu. Unfortunately H901 does not support Band 8 (800Mhz). The only one that is missing for me.
Sent from my LG-H901 using XDA Free mobile app
Can someone check for Band28 (700MHz)?
TheJesus said:
That menu does not exist on US variants (I can guarantee the T-Mobile variant, but probably goes for all of them, just like the G4). The T-Mobile variant in DFS will show up 2, 3, 4, 5, 7, 12, and 20 as active bands. DFS can't write back to the phone for some reason, so you can't manually activate more bands, but with a SIM unlock and the other carrier's SIM it should auto-activate the other bands. In case someone wants a picture version:
Click to expand...
Click to collapse
Hello TheJesus,
Please could you send me this version of DFS *DFS CDMA Tool v.15.10.23.0* the other version online are not working for me. Please I have chatted with them and they said they do no have it again. can u send it to me by any means. Thanks
dammie2great said:
Hello TheJesus,
Please could you send me this version of DFS *DFS CDMA Tool v.15.10.23.0* the other version online are not working for me. Please I have chatted with them and they said they do no have it again. can u send it to me by any means. Thanks
Click to expand...
Click to collapse
What do you need it for? It didn't do anything except show what was active on the phone, you can't write to it from my testing. I don't have a copy of it anymore, but any version of it should work equally.
Sent from my LG-H901 using Tapatalk
TheJesus said:
What do you need it for? It didn't do anything except show what was active on the phone, you can't write to it from my testing. I don't have a copy of it anymore, but any version of it should work equally.
Sent from my LG-H901 using Tapatalk
Click to expand...
Click to collapse
I wanted to use it to read and write the missing LTE Band on my LG V10 H962. The one I downloaded online never write. it can only shows it connected.
Please can you help me
dammie2great said:
I wanted to use it to read and write the missing LTE Band on my LG V10 H962. The one I downloaded online never write. it can only shows it connected.
Please can you help me
Click to expand...
Click to collapse
Read the guides over in the G4 forums on how to activate new bands. Like I said, it wouldn't let me write a new band.
Sent from my LG-H901 using Tapatalk

HELP! How to add LTE FDD bands

Does anyone know how to add or enable FDD-LTE band 4 (1700MHz). I already tried with MTK Engineer app but this and other bands are disabled and cannot be activated.
Thanks in advance
dj_superuser said:
Does anyone know how to add or enable FDD-LTE band 4 (1700MHz). I already tried with MTK Engineer app but this and other bands are disabled and cannot be activated.
Thanks in advance
Click to expand...
Click to collapse
I second your motion, but AWS will be hard to unlock, as the US version of the phone supporting AWS is not shipping yet. Maybe when is out you could crossflash the phone to get support, or mod the modem ROM/baseband or something, but before that I don't think is possible.
Yes. I guess so. When is the shipment of the US version expected to start?
dj_superuser said:
Does anyone know how to add or enable FDD-LTE band 4 (1700MHz). I already tried with MTK Engineer app but this and other bands are disabled and cannot be activated.
Thanks in advance
Click to expand...
Click to collapse
It's impossible to flash new frequency ranges on any modem. Frequencies are purely Hardware based. The p9000 does not support USA LTE frequencies. (1700/2100 band 4). Although the website says the B version (US version) has been "coming soon" for months now.
electrofryed said:
It's impossible to flash new frequency ranges on any modem. Frequencies are purely Hardware based. The p9000 does not support USA LTE frequencies. (1700/2100 band 4). Although the website says the B version (US version) has been "coming soon" for months now.
Click to expand...
Click to collapse
So. You mean that B version will have different hardware?
dj_superuser said:
So. You mean that B version will have different hardware?
Click to expand...
Click to collapse
Yes. The modem (sometimes called radio) will be different Hardware.

Question Regional Model variants and their respective frequencies?

Does anyone have an authoritative link or source for the different S23 ultra regional model variants and their respective bandwidth frequencies such as for 4g and 5g?
Can't find this information for any including the USA variant eg which specific frequencies of 4g and 5g does the USA model support?
The chipset and x70 modem makes it possible for this phone to truly be a global phone but.....
asking the same as well, cant find these details.
Here's hoping that the band unlock methods for the s22's and s21's also work on the s23's.
jcsww said:
Here's hoping that the band unlock methods for the s22's and s21's also work on the s23's.
Click to expand...
Click to collapse
I'm sure it will be the same to unlock the bands, no one will really know until they have one in hand.
Can you elaborate on these band unlock methods?
And could they unlock mmwave for example on the international variants so that 5g could work in US? And unlock international bands on US version so it could work everywhere else?
evangelionpunk said:
Can you elaborate on these band unlock methods?
And could they unlock mmwave for example on the international variants so that 5g could work in US? And unlock international bands on US version so it could work everywhere else?
Click to expand...
Click to collapse
This is the thread you probably want to have a look at. This method also worked for the s21's.
How to Enable All Bands Through Service Menu on US/CA S22 series (including Sub-6 and mmWave)
What is this? This is a guide on how to enable all LTE and 5G bands on the US or Canadian S22 series phones by going through the service menu. This guide is mostly based on this S20U guide by mellojosh, but has been adapted for the S22U phone...
forum.xda-developers.com
jcsww said:
This is the thread you probably want to have a look at. This method also worked for the s21's.
How to Enable All Bands Through Service Menu on US/CA S22 series (including Sub-6 and mmWave)
What is this? This is a guide on how to enable all LTE and 5G bands on the US or Canadian S22 series phones by going through the service menu. This guide is mostly based on this S20U guide by mellojosh, but has been adapted for the S22U phone...
forum.xda-developers.com
Click to expand...
Click to collapse
Interesting....
So basically you could enter the service menu and turn on all the extra bands?
In that case wouldn't the US version be the best one to have since it would have mmwave hardware baked in too? It should then work everywhere.
Though it sounds like you'll lose the function on os updates and resets?
evangelionpunk said:
Interesting....
So basically you could enter the service menu and turn on all the extra bands?
In that case wouldn't the US version be the best one to have since it would have mmwave hardware baked in too? It should then work everywhere.
Though it sounds like you'll lose the function on os updates and resets?
Click to expand...
Click to collapse
OS updates from Samsung are never fast. Doing so once every 2 to 3 months isn't so bad for the extra band support.
Samsung's modem software works well for the US and Canada because the hardware is the same and only the modem software separates the bands based on carrier/region. Due to the wide spread of mess across North America, US and Canadian models are always a good choice for potential band support. In some cases though, mixed ROM's can also bridge the support. In the S9 days, you could.jeep.the base.for.your region but flash the carrier side of the firmware to unlock band 71 on some overseas models. I don't know if this is still possible today but with all devices being very similar. I am hoping the hardware, including dual-SIM pins on the main board, will be there to enable through a firmware change or mod.
Do we know if the international dual sim variant has the same USA hardware based on s22/21/20?
Does it have mmwave baked in but just disabled by software?
I am still not clear what 5G bands are supported on the SM-S918BZKPEUB, nor if unlocking the bands through the service menu works. @UK S23, your deliveries are in place already, has anyone tried?
It seems as though the bands might only be disabled in software? If so, then it should be possible to enable whatever band you need. The only exception would be if a hardware component is needed or missing then it wouldn't be possible which likely wouldn't be the case for your 3g, 4g and 5g standard range. Maybe only 5g mmwave which is essentially only in US anyway.
If that's the case it sounds like US variant might be the best to get for global coverage barring lack of dual sim (though it does have physical+esim).
evangelionpunk said:
It seems as though the bands might only be disabled in software? If so, then it should be possible to enable whatever band you need. The only exception would be if a hardware component is needed or missing then it wouldn't be possible which likely wouldn't be the case for your 3g, 4g and 5g standard range. Maybe only 5g mmwave which is essentially only in US anyway.
If that's the case it sounds like US variant might be the best to get for global coverage barring lack of dual sim (though it does have physical+esim).
Click to expand...
Click to collapse
Samsung's band support is mostly software, at least when it comes to 4G and 5G. I have never bothered to change 2G and 3G bands because there is no use for them unless you are in a very rural area or roaming. This is why it is so easy to convert the North American models and why in the days of the S9+, you could get band 71 on international models with dual-SIM.
jcsww said:
Samsung's band support is mostly software, at least when it comes to 4G and 5G. I have never bothered to change 2G and 3G bands because there is no use for them unless you are in a very rural area or roaming. This is why it is so easy to convert the North American models and why in the days of the S9+, you could get band 71 on international models with dual-SIM.
Click to expand...
Click to collapse
Correct me if I'm wrong but you can't get mmwave bands on the international dual sim models right?
evangelionpunk said:
Correct me if I'm wrong but you can't get mmwave bands on the international dual sim models right?
Click to expand...
Click to collapse
I'm not sure when it comes to mmWave. You can enable it on the W for Canada even though the cell coverage and technologies used up there are probably never going to deploy it. Overseas, I have no idea.
jcsww said:
I'm not sure when it comes to mmWave. You can enable it on the W for Canada even though the cell coverage and technologies used up there are probably never going to deploy it. Overseas, I have no idea.
Click to expand...
Click to collapse
I've read that the US and CA models are basically identical so that might explain it. It's also possible I suppose that in s23 since it uses x70 modem, which has native support built in, that all model variants might be able to do it but for software. Though we won't know for sure till someone from different region goes into their service menu and checks.
mmWave requires a specific antenna to function. This antenna used to cost like $50 but I'd be surprised if it's gone down much beyond $30 so manufacturers will still leave it out if it's not necessary.
EtherealRemnant said:
mmWave requires a specific antenna to function. This antenna used to cost like $50 but I'd be surprised if it's gone down much beyond $30 so manufacturers will still leave it out if it's not necessary.
Click to expand...
Click to collapse
Thanks and that probably means it likely won't be in other region variants.
Personally, I'd just make a single phone that is globally universal and can be used everywhere. The massive scale should drop the component pricing considerably. Carrier exclusives and market restrictions if any needed in software only. But that's just me lol.
evangelionpunk said:
Thanks and that probably means it likely won't be in other region variants.
Personally, I'd just make a single phone that is globally universal and can be used everywhere. The massive scale should drop the component pricing considerably. Carrier exclusives and market restrictions if any needed in software only. But that's just me lol.
Click to expand...
Click to collapse
Yes, you would think they would do this, but Samsung has always customized difference models for different regions so it must not be that straightforward. I believe that regulatory bodies would require them to test and submit all the documentation for that extra antenna, for example. It also wouldn't surprise me if the mmWave equipment is outright banned in some regions either for whatever reason.
EtherealRemnant said:
Yes, you would think they would do this, but Samsung has always customized difference models for different regions so it must not be that straightforward. I believe that regulatory bodies would require them to test and submit all the documentation for that extra antenna, for example. It also wouldn't surprise me if the mmWave equipment is outright banned in some regions either for whatever reason.
Click to expand...
Click to collapse
Yeah.
Are iphones globally all exactly the same now?
evangelionpunk said:
Yeah.
Are iphones globally all exactly the same now?
Click to expand...
Click to collapse
No. There are 5 different models of iPhone 14 Pro Max, for example, and each will have different band configurations.
That said, the NA models have the most complete bands of any device released so far this year and it was released last year with an older modem. They even have support for Dish Network's n70, a band exclusive to them worldwide, something Samsung didn't even choose to support on their NA variant this year despite having a contract with Dish for radio equipment supporting that band.
I actually think the NA iPhone 14 Pro models support every commercially available band worldwide but I don't really keep up on bands not used in the US.
iPhone 14 Pro Max Model Number A2651, A2893, A2894, A2896, A2895 Differences - TechWalls
The iPhone 14 Pro Max comes in 5 model numbers, which are A2651, A2893, A2894, A2896, and A2895. Let's check out their differences and all the part numbers.
www.techwalls.com

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