LTE Bands determined by hardware or software? - Xiaomi Redmi Note 4 Questions & Answers

I have seen sellers listing B20 as a compatible band and others that do not is this down to the hardware or the rom they are running? I have also noticed ebay sellers saying "international" and "global" versions and still not saying its compatible with band 20?

Yeah, it can get pretty confusing. The LTE bands will be determined by the hardware.
Sent from my Redmi Note 4 using Tapatalk

Band 20 is available in 'global version'.
Gesendet von meinem Redmi Note 4 mit Tapatalk

ianonfire said:
I have seen sellers listing B20 as a compatible band and others that do not is this down to the hardware or the rom they are running? I have also noticed ebay sellers saying "international" and "global" versions and still not saying its compatible with band 20?
Click to expand...
Click to collapse
Well, actually they are dependent on BOTH hardware & software implementation. Generally, in higher end SOCs (say Qualcomm 8xx series), generally all the global LTE bands are present and manufacturers choose to enable just some in different regions. In low to mid range devices,due to cost constraints, OEMs usually choose to include the hardware for bands necessary for the region the device is targeted, making devices a little cheaper to manufacture.
I hope it helps.

Related

Confused about China vs Global

Hi all,
I'm considering getting a Redmi Note 3 (Snapdragon version/Pro). I'm a little confused about the bands that it supports. When I check wellmyphonework.net it says that the Global model will work on LTE Band 4, but the China/Unicom one will not. Looking in the forums I see Global and China Roms, but nothing definitive about separate physical models.
Is the hardware all the same(ignoring RAM/Storage variations)? Do the supported bands depend solely on which ROM is installed? If there are distinct hardware versions is there any way to tell which one I would get from ebay or AliExpress?
Thanks in advance.
smallmj said:
Hi all,
I'm considering getting a Redmi Note 3 (Snapdragon version/Pro). I'm a little confused about the bands that it supports. When I check wellmyphonework.net it says that the Global model will work on LTE Band 4, but the China/Unicom one will not. Looking in the forums I see Global and China Roms, but nothing definitive about separate physical models.
Is the hardware all the same(ignoring RAM/Storage variations)? Do the supported bands depend solely on which ROM is installed? If there are distinct hardware versions is there any way to tell which one I would get from ebay or AliExpress?
Thanks in advance.
Click to expand...
Click to collapse
The lte band support is hardware dependant, software doesn't matter.
I've bought mine with China global and lte is working fine in Europe.
Sent from Note 3, Xiaomi Redmi Note 3.
mr.loverlover said:
The lte band support is hardware dependant, software doesn't matter.
I've bought mine with China global and lte is working fine in Europe.
Sent from Note 3, Xiaomi Redmi Note 3.
Click to expand...
Click to collapse
That's simply not true. The SD650 supports Band 4 which is what he's asking about. Europe doesn't use Band 4 and all the versions support European lte bands. On another thread here a user with AT&T was getting lte on the vendor rom and changed to the Global rom and now only gets H+. I too would like to know which version of the phone I have.

Possible to enable additional LTE bands on KIW-L24?

Hi all,
I was wondering if the Honor 5X was capable of having additional LTE bands enabled, specifically bands 3 and 8? According to GSM Arena, the non-US versions of this phone support that band. I've seen that some other phones, such as the old Nexus could have additional bands added.
I'm a newbie to phone hardware, so apologies if this is a dumb question.
I'd like to know the answer to this question too. I found this thread on the very same topic, but for the Nexus 5. It serves as a good place to gather relevant info, and learn about the problem.
What I've gathered so far is that a phone needs a couple pieces of hardware (Radio Frequency Front End components Filters and Power Amplifier Module) to enable a particular LTE band. We can find this information if we have a service manual. Do you know if we have one available for KIW-L24?
If the hardware is available, we may be able to enable it by editing an Android OS system file (not exactly sure yet).
If that doesn't work, we'll have to edit the qualcomm radio firmware, enable the bands, and flash it back to the device. I think we'll need to find some leaked software from qualcomm to do this (QRCT-TOOLS-NV Manager or something)
I have this same problem. but Flashing it with another region firmware say Indian version of honor 5x that has band 3 and 8 will it work? I learnt the American version has it but locked.
I support this question too. I would be very grateful with the one capable of answering it. If the hardware in different versions of the phone is exactly the same, then one should be able to, at least, enable all the bands supported by those different versions.
Did any of you have a solution for this?
I am also looking for having/unlocking additonal bands on the device.
Thank you!
ivissani said:
I support this question too. I would be very grateful with the one capable of answering it. If the hardware in different versions of the phone is exactly the same, then one should be able to, at least, enable all the bands supported by those different versions.
Click to expand...
Click to collapse
cogbuagu said:
I have this same problem. but Flashing it with another region firmware say Indian version of honor 5x that has band 3 and 8 will it work? I learnt the American version has it but locked.
Click to expand...
Click to collapse
JT-on said:
I'd like to know the answer to this question too. I found this thread on the very same topic, but for the Nexus 5. It serves as a good place to gather relevant info, and learn about the problem.
What I've gathered so far is that a phone needs a couple pieces of hardware (Radio Frequency Front End components Filters and Power Amplifier Module) to enable a particular LTE band. We can find this information if we have a service manual. Do you know if we have one available for KIW-L24?
If the hardware is available, we may be able to enable it by editing an Android OS system file (not exactly sure yet).
If that doesn't work, we'll have to edit the qualcomm radio firmware, enable the bands, and flash it back to the device. I think we'll need to find some leaked software from qualcomm to do this (QRCT-TOOLS-NV Manager or something)
Click to expand...
Click to collapse
donpaisa said:
Hi all,
I was wondering if the Honor 5X was capable of having additional LTE bands enabled, specifically bands 3 and 8? According to GSM Arena, the non-US versions of this phone support that band. I've seen that some other phones, such as the old Nexus could have additional bands added.
I'm a newbie to phone hardware, so apologies if this is a dumb question.
Click to expand...
Click to collapse
legendnexus said:
Did any of you have a solution for this?
I am also looking for having/unlocking additonal bands on the device.
Thank you!
Click to expand...
Click to collapse
As of my knowledge, Honor 5x doesn't have capability to support additional bands from the hardware perspective. Thats why each region has each build with different model number supporting their respective region bands.
vsriram92 said:
As of my knowledge, Honor 5x doesn't have capability to support additional bands from the hardware perspective. Thats why each region has each build with different model number supporting their respective region bands.
Click to expand...
Click to collapse
Non sense , when you said that it's like saying huawei built each honor 5x with different hardware which is not true only the Kiw-AL10 is different, the LTE bands are just locked on each device.
I think you will need some huawei honor support to know at least which hardware antenna is present in your kiw_l24.
I guess with google you can not find the hardware layout of honor 5x or which component is installed.
There are two cases:
1/ hardware antenna for a specific band is present but not used (usecase: for certain country, Constructor is validating only the corresponding bands)
--> you can here flash a firmware from another country to be able to use these bands
2/hardware antenna for a specific band is not present
--> you can do nothing
You can try to flash firmware from other country (l22 formware which support band 3 and 8) but i guess it might brick your phone.
https://www.frequencycheck.com/models/GNNe9/huawei-honor-5x-lte-dual-sim-kiw-l24
https://www.frequencycheck.com/models/AZMpV/huawei-honor-5x-td-lte-kiw-l22
The same issue
Any news about how to enable the frequencies in the model KIW-l24?

which honor 9 model?

Hi. I have a galaxy s8+ which I am thinking of selling to get this phone - mainly because of treble support and the s8+ is too big! I was going to get the 6gb/128gb version which is great value on ali express. I know the Chinese version doesn't have band 20 but that doesn't matter on EE in the UK.
However I wanted to check whether there are other issues with not getting the European version of the honor 9? Does the Chinese version support the new aosp treble based Rom the devs have built? The thread seems vague on this issue. Other there any other issues with the Chinese version?
Appreciate your help.
As far as i'm aware, you can actually re brand the Chinese variant to EU.
Not sure if the version of android on it has Google Play services, or an English language selection, but language packs can be downloaded.
BUT! you will get the OS updates before us lot with EU versions.... who are still stuck on B182, China have got B360 which is oreo.
Either way, its a good buy, destroys the s8 in benchmarks, and just the right size to not be too small or too big in the hand.
There 3 differents STF Chinese honor 9:
AL00
AL10
TL10
I've got an AL00 rebranded to L09 and it's working great, like an European model but without LTE BANDS 7(2600) & 20(800).
Thanks for the responses. I thought the Chinese variants of the honor 9 were the same as Xiaomi - only missing band 20? I'm on EE which doesn't need band 20 but I believe does need 2600mhz (band 7). Any ideas? Thanks
https://m.gsmarena.com/compare.php3?idPhone1=8704&idPhone2=8704#europe,al00
You could change phone version on this link, I think LTE BANDS are corrects but there is errors on size and colors.
Thanks. EE state that most of their 4g coverage is with band 3 so should be Ok! Thanks for the responses guys.
I wouldn't expect huawei to use a different LTE chip in each phone, that would require 2 different versions of the kirin 960, which wouldn't be in the interests of the development cost of the phone.
I'd assume its an OS limitation, since AL10/100 firmwares will run on L09 models after rebranding, and vice-versa.
ambitiousButRubbish said:
I wouldn't expect huawei to use a different LTE chip in each phone, that would require 2 different versions of the kirin 960, which wouldn't be in the interests of the development cost of the phone.
I'd assume its an OS limitation, since AL10/100 firmwares will run on L09 models after rebranding, and vice-versa.
Click to expand...
Click to collapse
Thanks for that
ambitiousButRubbish said:
I wouldn't expect huawei to use a different LTE chip in each phone, that would require 2 different versions of the kirin 960, which wouldn't be in the interests of the development cost of the phone.
I'd assume its an OS limitation, since AL10/100 firmwares will run on L09 models after rebranding, and vice-versa.
Click to expand...
Click to collapse
I'd like it to be true.
Do baseband is inside Kirin 960 cpu chip or in another chip?
The way I see it they ship differents variations with differents nand & ram sizes, so maybe they could switch others things without adding tremendous producing cost.
Or they are the same but phoned still keep their original LTE bands over the publicly available rebranding guides.

Have some questions!

Thinking about buying this phone. Can you guys tell me the common issues with this phone? The one I'm most concerned with is the headphone jack, does it produce hiss sound at low volume? I ask this since I came across a lot of phones with that issue. Thanks in advance
linkzex said:
Thinking about buying this phone. Can you guys tell me the common issues with this phone? The one I'm most concerned with is the headphone jack, does it produce hiss sound at low volume? I ask this since I came across a lot of phones with that issue. Thanks in advance
Click to expand...
Click to collapse
I personally don't experience hissing on this phone. As far as issues, it involves the OTA from Vendor Roms which bricked some devices. You can check your ROM version and cross reference it with the ones on the Mi website to make sure. Aside from that, I don't see anything wrong with the phone.
Hi, I'm also considering to buy Note 5 and I just wanted to say that I don't have that problem with Note 4, it doesn't mean much since I don't use N5 but I think there is very very little chance for hissing issue in any device produced in 2017.
Hi just want to ask about redmi note 5 plus.
1. How could i know if it is a international variant
2. Any one show me an SS of something like model name or variant for international variant so that i have a clue when buying it
LabLab...28 said:
Hi just want to ask about redmi note 5 plus.
1. How could i know if it is a international variant
2. Any one show me an SS of something like model name or variant for international variant so that i have a clue when buying it
Click to expand...
Click to collapse
Did you manage to get the info? Please share if you did.
Is the india model the international variant?
Thanks
antares* said:
Did you manage to get the info? Please share if you did.
Is the india model the international variant?
Thanks
Click to expand...
Click to collapse
No one is concern bro. ;(
Hello, I have Redmi 5 in Pakistan. It is a international variant. Screenshots are attached. Hope they help. Thanks.
LabLab...28 said:
Hi just want to ask about redmi note 5 plus.
1. How could i know if it is a international variant
2. Any one show me an SS of something like model name or variant for international variant so that i have a clue when buying it
Click to expand...
Click to collapse
Hi, when I purchased seller offer also a global variant for 40 usd more.
Many people confuse about global device version and global firmware that it´s not the same.
You just have to pay special attention to the bands that is enabled, the global version has more bands enabled, by i.e my version that is a non global doesn´t have LTE bands 2 (1900) nor 4 (1700/2100) it mean that in my country it can´t work on 4G (of course I bought it so it is cause I didn´t need). This is the main difference.
SubwayChamp said:
Hi, when I purchased seller offer also a global variant for 40 usd more.
Many people confuse about global device version and global firmware that it´s not the same.
You just have to pay special attention to the bands that is enabled, the global version has more bands enabled, by i.e my version that is a non global doesn´t have LTE bands 2 (1900) nor 4 (1700/2100) it mean that in my country it can´t work on 4G (of course I bought it so it is cause I didn´t need). This is the main difference.
Click to expand...
Click to collapse
I really don't understand because my device is working with the B4 (1700) band but it is not a real Global version. :silly:
Abnoiesu said:
I really don't understand because my device is working with the B4 (1700) band but it is not a real Global version. :silly:
Click to expand...
Click to collapse
Why do you say that has B4? Where you saw it?
Look at this info, just 4G apparted, this is a non-global version from a chinese seller you can find these specs;
4G FDD LTE B5:850 /B8:900 /B3:1800 /B1:2100 /B7:2600
TD LTE B38:2600 /B39:1900/ B40:2300 /B41:2500 MHz
TD or TDD is the LTE FOR China, look up FDD LTE bands.
And this is a Global version, seller usually put in a red highlighted the bands added
4G: FDD LTE B5:850 /B8:900 /B3:1800 /B1:2100 /B7:2600 /B4:1700 /B20:800;
TD LTE B38:2600 / B40:2300
Differences here are bands 4 for Latin America and guess some regions of Asia and maybe others and band 20 for Spain.
SubwayChamp said:
Why do you say that has B4? Where you saw it?
Look at this info, just 4G apparted, this is a non-global version from a chinese seller you can find these specs;
4G FDD LTE B5:850 /B8:900 /B3:1800 /B1:2100 /B7:2600
TD LTE B38:2600 /B39:1900/ B40:2300 /B41:2500 MHz
TD or TDD is the LTE FOR China, look up FDD LTE bands.
And this is a Global version, seller usually put in a red highlighted the bands added
4G: FDD LTE B5:850 /B8:900 /B3:1800 /B1:2100 /B7:2600 /B4:1700 /B20:800;
TD LTE B38:2600 / B40:2300
Differences here are bands 4 for Latin America and guess some regions of Asia and maybe others and band 20 for Spain.
Click to expand...
Click to collapse
I mentioned that because my 4g shouldn't work but it appears in the notification bar.
I bought the "Official Global ROM" (I saw it is not the Global Version)
FDD LTE B3:1800/B1:2100/B7:2600/B5:850/B8:900MHz
TDD LTE B34:2100/B38:2600/B39:1900/B40:2300/B41:2500MHz
This confuses me :silly:
Abnoiesu said:
I mentioned that because my 4g shouldn't work but it appears in the notification bar.
I bought the "Official Global ROM" (I saw it is not the Global Version)
FDD LTE B3:1800/B1:2100/B7:2600/B5:850/B8:900MHz
TDD LTE B34:2100/B38:2600/B39:1900/B40:2300/B41:2500MHz
This confuses me :silly:
Click to expand...
Click to collapse
No, if your device hasn´t these two added bands definitely it´s not a global version (global rom concept mean nothing for this) is a hardware limitation although can work within 4G depending on your company carrier in some of the 5 frequencies enabled.
I have a Chinese RN5, it has loads of bands dudes. The chance of it not working on your network are slim.
As for the headphones dilemma, they do not hiss or produce low volume. Altho if you pair them with Xiaomi Pro HD which have a high impedance then you will notice a lack in volume. That can be easily fixed with Dolby Atmos the Magisk Module.

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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