I have a question for all the lucky ones of you who have a Mi Mix.
With most of the Xiaomi phones which are released, people are unhappy about the lack of band support for regions outside of China. I know many people in Europe are unhappy about not having Band 20, those of us in Japan would really like to have UMTS Band 6/19 (among others), Australians want LTE Band 28, and people in the US would like Band 12/17.
As you may know, with some phones, it's possible to unlock these bands by putting the phone into diag mode and using Qualcomm tools like QPST. Here in Japan, it was possible to enable the UMTS Bands 6 and 19 on the Mi5 and the Mi Max, but not possible on the Redmi Note 3 or the Mi5S, so it's really case by case.
Seeing as that the Mi Mix is a concept phone people are crazy about all over the world, I am very curious whether it's possible to enable LTE bands and WCMDA bands on the Mi Mix. I don't want to spend the big money to buy one without first having confidence that I can get it to work on my carrier's bands.
So I'd like to start this discussion. Has anyone tried anything? Successes, failures, please post them all!
duraaraa said:
I have a question for all the lucky ones of you who have a Mi Mix.
With most of the Xiaomi phones which are released, people are unhappy about the lack of band support for regions outside of China. I know many people in Europe are unhappy about not having Band 20, those of us in Japan would really like to have UMTS Band 6/19 (among others), Australians want LTE Band 28, and people in the US would like Band 12/17.
As you may know, with some phones, it's possible to unlock these bands by putting the phone into diag mode and using Qualcomm tools like QPST. Here in Japan, it was possible to enable the UMTS Bands 6 and 19 on the Mi5 and the Mi Max, but not possible on the Redmi Note 3 or the Mi5S, so it's really case by case.
Seeing as that the Mi Mix is a concept phone people are crazy about all over the world, I am very curious whether it's possible to enable LTE bands and WCMDA bands on the Mi Mix. I don't want to spend the big money to buy one without first having confidence that I can get it to work on my carrier's bands.
So I'd like to start this discussion. Has anyone tried anything? Successes, failures, please post them all!
Click to expand...
Click to collapse
This (QPST) is something I have no experience with,but,interested in the subject:
I'm good with the band support (for now) as what's available in my area,with my carrier,is supported (Bands 2 &4 on T-Mobile US,no Band 12 or 66 yet),definitely would be nice for at least Band 12,if possible,as I believe my area will get it eventually.
One side note & a positive one at that:
My MiMix locks-in on a signal & has better/stronger connections than any phone I've used to date. This was really noticeable while commuting back & forth to work today,unbelieveable signal quality.
IDK if the ceramic body is better vs other materials,but,recent flagships from HTC/Samsung/LG pale in comparison vs this phone.
i have MI MIX in hand.
I think we need MIX Diag Driver to make it recognize from pc. MI5 Diag drivers are not the same
duraaraa said:
I have a question for all the lucky ones of you who have a Mi Mix.
With most of the Xiaomi phones which are released, people are unhappy about the lack of band support for regions outside of China. I know many people in Europe are unhappy about not having Band 20, those of us in Japan would really like to have UMTS Band 6/19 (among others), Australians want LTE Band 28, and people in the US would like Band 12/17.
As you may know, with some phones, it's possible to unlock these bands by putting the phone into diag mode and using Qualcomm tools like QPST. Here in Japan, it was possible to enable the UMTS Bands 6 and 19 on the Mi5 and the Mi Max, but not possible on the Redmi Note 3 or the Mi5S, so it's really case by case.
Seeing as that the Mi Mix is a concept phone people are crazy about all over the world, I am very curious whether it's possible to enable LTE bands and WCMDA bands on the Mi Mix. I don't want to spend the big money to buy one without first having confidence that I can get it to work on my carrier's bands.
So I'd like to start this discussion. Has anyone tried anything? Successes, failures, please post them all!
Click to expand...
Click to collapse
I may have that 'xtra' mix in a few weeks, will PM you if it pans out and we can see about a software hack to open up other bands.
Sent from my Samsung Galaxy S7 Edge using XDA Labs
wolfgart said:
i have MI MIX in hand.
I think we need MIX Diag Driver to make it recognize from pc. MI5 Diag drivers are not the same
Click to expand...
Click to collapse
I've heard the Mi5 diag drivers were usable on the Mi5S, which is the same SD 821, so that's strange. What happens when you put it in diag mode and plug it in? Can I see a screenshot from device manager, or some evidence of what the device is?
duraaraa said:
I have a question for all the lucky ones of you who have a Mi Mix.
With most of the Xiaomi phones which are released, people are unhappy about the lack of band support for regions outside of China. I know many people in Europe are unhappy about not having Band 20, those of us in Japan would really like to have UMTS Band 6/19 (among others), Australians want LTE Band 28, and people in the US would like Band 12/17.
As you may know, with some phones, it's possible to unlock these bands by putting the phone into diag mode and using Qualcomm tools like QPST. Here in Japan, it was possible to enable the UMTS Bands 6 and 19 on the Mi5 and the Mi Max, but not possible on the Redmi Note 3 or the Mi5S, so it's really case by case.
Seeing as that the Mi Mix is a concept phone people are crazy about all over the world, I am very curious whether it's possible to enable LTE bands and WCMDA bands on the Mi Mix. I don't want to spend the big money to buy one without first having confidence that I can get it to work on my carrier's bands.
So I'd like to start this discussion. Has anyone tried anything? Successes, failures, please post them all!
Click to expand...
Click to collapse
I've got one in hand in the states (where I actually do need to unlock band 12 for T-mobile) and a patch cable I made handy in case this thing goes brick mode from us trying stuff, I'm game to be the guinea pig for science.
Fair warning though, while I'm a web developer that's very comfy with terminal, I'm new to the android ADB world, so pretty detailed instructions / links to guides will be needed ha!
Good luck Ken, I hope you are able to crack this bad boy.
krazyken04 said:
I've got one in hand in the states (where I actually do need to unlock band 12 for T-mobile) and a patch cable I made handy in case this thing goes brick mode from us trying stuff, I'm game to be the guinea pig for science.
Fair warning though, while I'm a web developer that's very comfy with terminal, I'm new to the android ADB world, so pretty detailed instructions / links to guides will be needed ha!
Click to expand...
Click to collapse
first of all I do not have the MIX/any Xiaomi device...but you could try starting here (though think you may have already or have plodded down the path much more already) good luck!
http://forum.xda-developers.com/mi-...how-to-unlock-lte-frequency-bands-mi-t3215880
KOLIOSIS said:
This (QPST) is something I have no experience with,but,interested in the subject:
I'm good with the band support (for now) as what's available in my area,with my carrier,is supported (Bands 2 &4 on T-Mobile US,no Band 12 or 66 yet),definitely would be nice for at least Band 12,if possible,as I believe my area will get it eventually.
Click to expand...
Click to collapse
Is that band 4 only on LTE? I've seen many spec sheets and the carrier I'm on only has band 4 for 3g.
emann56 said:
Is that band 4 only on LTE? I've seen many spec sheets and the carrier I'm on only has band 4 for 3g.
Click to expand...
Click to collapse
this is what I have gathered from various sources (so yes Band 4 is both LTE and 3g)
Tmobile
LTE Frequencies:
1700 MHz & 2100 MHz AWS band 4
1900 MHz PCS band 2
Lower 700 MHz band 12
3G/4G Frequencies (WCDMA):
1700 MHz & 2100 MHz AWS band 4
1900 MHz PCS band 2
2G Frequencies (GSM/GPRS/EDGE):
1900 MHz PCS band 2
ATT
AT&T 4G HSPA and HSPA+ use 850Mhz(Band 5) and 1900Mhz(Band 2) bands
LTE uses Band 17(700Mhz), Band 5(850Mhz), Band 2(1900Mhz),
Band 4(1700/2100Mhz)
LTE B29 (700)
LTE B30 (2300 WCS)
mac231us said:
this is what I have gathered from various sources (so yes Band 4 is both LTE and 3g)
Tmobile
LTE Frequencies:
1700 MHz & 2100 MHz AWS band 4
1900 MHz PCS band 2
Lower 700 MHz band 12
3G/4G Frequencies (WCDMA):
1700 MHz & 2100 MHz AWS band 4
1900 MHz PCS band 2
2G Frequencies (GSM/GPRS/EDGE):
1900 MHz PCS band 2
ATT
AT&T 4G HSPA and HSPA+ use 850Mhz(Band 5) and 1900Mhz(Band 2) bands
LTE uses Band 17(700Mhz), Band 5(850Mhz), Band 2(1900Mhz),
Band 4(1700/2100Mhz)
LTE B29 (700)
LTE B30 (2300 WCS)
Click to expand...
Click to collapse
That still doesn't mean the WCDMA Band 4 is enabled. It's possible to have LTE band 4 and not have WCDMA Band 4.
emann56 said:
That still doesn't mean the WCDMA Band 4 is enabled. It's possible to have LTE band 4 and not have WCDMA Band 4.
Click to expand...
Click to collapse
Yes....was just giving the bands and frequencies I know for two GSM carriers in the US. Monitoring the bands at various locations by something like signal check lite (much easier to use/read than lte discovery IMO) would be only way to tell.. If I recall correctly this device has 3g at 850,900,1800,1900 so there is no band 4 on 3g it seems... Although band 4 (1700/2100) COULD be a 3g band too for some devices. Someone with better knowledge can chime in here. I might be wrong.
Sent from my SM-T285M using XDA Free mobile app
krazyken04 said:
I've got one in hand in the states (where I actually do need to unlock band 12 for T-mobile) and a patch cable I made handy in case this thing goes brick mode from us trying stuff, I'm game to be the guinea pig for science.
Fair warning though, while I'm a web developer that's very comfy with terminal, I'm new to the android ADB world, so pretty detailed instructions / links to guides will be needed ha!
Click to expand...
Click to collapse
http://forum.xda-developers.com/mi-...how-to-unlock-lte-frequency-bands-mi-t3215880
any luck so far? Thanks
mac231us said:
http://forum.xda-developers.com/mi-...how-to-unlock-lte-frequency-bands-mi-t3215880
any luck so far? Thanks
Click to expand...
Click to collapse
Update: I have actually successfully forced band twelve with NV values (I can see it stick and unwind the value to see that band 12 is allowed after a reboot). I followed about 10 diff guides to get my bearing on working with the Qualcomm editors and maintenance programs.
Sad to say: the modem in the Mix simply won't do band 12. I talked with a few folks from the Xiaomi Reddit Discord and they confirmed my suspicions that with Xiaomi (with a few exceptions) it is usually hardware that's keeping you off of a band.
I don't personally think there's any amount of software hackery we can do to get bands unlocked.
Edit: I am quite comfortable in ADB / SU and am happy to try any and all suggestions out on my phone in addition to what I've tried already btw. Please do let me know if there's something you think I may have missed following the various unlock threads.
krazyken04 said:
Update: I have actually successfully forced band twelve with NV values (I can see it stick and unwind the value to see that band 12 is allowed after a reboot). I followed about 10 diff guides to get my bearing on working with the Qualcomm editors and maintenance programs.
Sad to say: the modem in the Mix simply won't do band 12. I talked with a few folks from the Xiaomi Reddit Discord and they confirmed my suspicions that with Xiaomi (with a few exceptions) it is usually hardware that's keeping you off of a band.
I don't personally think there's any amount of software hackery we can do to get bands unlocked.
Edit: I am quite comfortable in ADB / SU and am happy to try any and all suggestions out on my phone in addition to what I've tried already btw. Please do let me know if there's something you think I may have missed following the various unlock threads.
Click to expand...
Click to collapse
Sorry to hear that the band could not be tapped into...
yes most likely a hardware thing-like Samsung (some of their models exclusively for Latin america have u.s bands but the 'international' variants of the same models will not do the U.S bands no matter what...
I actually opened one of them (got a damaged T239M) and found indeed that the motherboard is different...(so much speculation and folks asking/trying to flash S. American firmware on like the T705, T239 etc, myself included (not possible anyway even if going through TWRP and flashing modem files etc...bootloader and pit all different..so nothing would change with the other parts of the firmware)
so it is highly likely in this case that the modem will not do bands 12, 17 (ATT) and 29, 30 (ATT). However, it is impressive that for a China phone this will even do bands 2, 4 and 5. Huawei models (again supposedly international) except for some variants of the smaller 5-5.2 inch models (not p9, p8, P8 max, x2, t3, t3 pro, or m3 (some of these are the tablet phone types) and numerous other Chinese phones will not do anything more than 1, 3, 7 and then maybe 8 and 20 or a 28. (all useless for North America). Huawei has an M2 variant that has US bands and also on their smaller phones (certain versions)
so for the Mix, you at least have LTE 2, 4 and 5 (though of lesser importance).
krazyken04 said:
Update: I have actually successfully forced band twelve with NV values (I can see it stick and unwind the value to see that band 12 is allowed after a reboot). I followed about 10 diff guides to get my bearing on working with the Qualcomm editors and maintenance programs.
Sad to say: the modem in the Mix simply won't do band 12. I talked with a few folks from the Xiaomi Reddit Discord and they confirmed my suspicions that with Xiaomi (with a few exceptions) it is usually hardware that's keeping you off of a band.
I don't personally think there's any amount of software hackery we can do to get bands unlocked.
Edit: I am quite comfortable in ADB / SU and am happy to try any and all suggestions out on my phone in addition to what I've tried already btw. Please do let me know if there's something you think I may have missed following the various unlock threads.
Click to expand...
Click to collapse
can you make a detailed guide with all steps and stuff to enable desidered band ? If not works is the same ...
would like to see if LTE Band 20 can be unlocked
wolfgart said:
can you make a detailed guide with all steps and stuff to enable desidered band ? If not works is the same ...
Click to expand...
Click to collapse
I would love to, it's the first thought I had when both starting a new guide and when I finished getting the phone to look for band 12.
I'm currently _buried_ in a project for work right now (it's taking my nights and a lot of sleep from me ha), so nothing soon. But it's on my list of first contributions I'd like to make to this awesome community!
Would you be able to try Band 20 ?
Thanks
krazyken04 said:
I would love to, it's the first thought I had when both starting a new guide and when I finished getting the phone to look for band 12.
I'm currently _buried_ in a project for work right now (it's taking my nights and a lot of sleep from me ha), so nothing soon. But it's on my list of first contributions I'd like to make to this awesome community!
Click to expand...
Click to collapse
tarkuk said:
would like to see if LTE Band 20 can be unlocked
Click to expand...
Click to collapse
So far my experience is that if the band isn't listed in those spec sheet it isn't there in the hardware (apparently a very Xiaomi thing to do). I'm finding that they rarely software lock you out of the bands, it's usually that their hardware simply doesn't support the band.
I was curious if it was possible to enable frequences not officially supported on the Mi 9. I did a quick search and found quite a bit of enabling additional bands on other phones( lg, samsung, moto) but see nothing for xiaomi and more specifically mi 9. I was hoping to enable band 71 600mhz for T-mobile USA. Has anyone attempted to turn on other LTE bands and was sucessful? Thanks!
https://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
https://www.androidauthority.com/activate-4g-lte-868847/
https://www.**************/how-to-enable-all-disabled-lg-g4-lte-4g-hsdpa-bands/
sushi143 said:
I was curious if it was possible to enable frequences not officially supported on the Mi 9. I did a quick search and found quite a bit of enabling additional bands on other phones( lg, samsung, moto) but see nothing for xiaomi and more specifically mi 9. I was hoping to enable band 71 600mhz for T-mobile USA. Has anyone attempted to turn on other LTE bands and was sucessful? Thanks!
https://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
https://www.androidauthority.com/activate-4g-lte-868847/
https://www.**************/how-to-enable-all-disabled-lg-g4-lte-4g-hsdpa-bands/
Click to expand...
Click to collapse
i dont think u can enable other bands because global an chinese model dont have the same modem
Mi 9 uses SD855 and the difference in just between the locked and unlocked band! i have a Chinese Mi 9 and i could successfully unlock CA on B3 badB7 but it was unstable in changing between H+ and 4G+
https://forum.xda-developers.com/Mi-9/how-to/enable-4g-4-5g-carrier-aggregation-mi9-t3977213
Hello friends, it's been a while since someone posed the question below. I just bought a K20 Pro (China Version) from Aliexpress and only found out about the limitations of LTE bands. I was wondering if there is now a workaround to add LTE bands with a newer version QPST or another workaround/hack? If that, could we expect something in the future or am I pretty much toast?
You are toast. Time to buy a phone that's got all the bands you need. I'm in the same spot I need to give up on these POS international phone with almost 0 LTE bands for the USA.
954wrecker said:
You are toast. Time to buy a phone that's got all the bands you need. I'm in the same spot I need to give up on these POS international phone with almost 0 LTE bands for the USA.
Click to expand...
Click to collapse
I hope at some point there will be a hack, like there has been in the past. where are the geniuses on this forum ?
It's not about geniusness, it's utterly time wasting and requires a hell lot of effort which in the end doesn't guarantee it will unlock the bands, so next time get a phone with your required bands.
Sent from my Redmi K20 Pro using Tapatalk
asfazrq said:
Hello friends, it's been a while since someone posed the question below. I just bought a K20 Pro (China Version) from Aliexpress and only found out about the limitations of LTE bands. I was wondering if there is now a workaround to add LTE bands with a newer version QPST or another workaround/hack? If that, could we expect something in the future or am I pretty much toast?
Click to expand...
Click to collapse
I seen people talking about how to do it on LO17 thread
SuperShad98 said:
I seen people talking about how to do it on LO17 thread
Click to expand...
Click to collapse
Didn't find any mention of adding LTE bands in the LOS thread. Can you point me in the right direction with a post number or page number?
I'm referring to the comments around the end of the first page on this thread (also continues to page 2)
https://forum.xda-developers.com/k20-pro/development/rom-lineageos-17-0-t3976469
I also found this, which seems pretty much what we need
https://forum.xda-developers.com/android/apps-games/app-qualcomm-nv-calculator-adding-2g-3g-t2915649
**** these international phones I'm tired of them not having the bands we use in the USA activated. My mix 3 had every single LTE band and this K20 pro has 1 ****ty band. Why can't every phone have every band that people use in the world, is it really that hard?
954wrecker said:
**** these international phones I'm tired of them not having the bands we use in the USA activated. My mix 3 had every single LTE band and this K20 pro has 1 ****ty band. Why can't every phone have every band that people use in the world, is it really that hard?
Click to expand...
Click to collapse
If you look at the OnePlus 7 Pro bands you can see that it's easy, but brands don't want to do that for profits of selling a new phone when someone moves to a different country and so on, however I am not too sure why xiaomi doesn't have all bands enabled on the global version of the phone like OnePlus, I would understand locking the CN and Indian version, but the global should have all bands enabled
Engineer code qualcomm 855
Unfortunately, even if I've bought a MI9 T pro , described with correct bands & charger (need 4G B20 & B28) ; they send me a Redmi K20 pro with chinese plug... I opened a dispute but it drags on and I'm afraid of not having a commercial solution. So If someone did find a technical one ; I'd be very glad !
I saw some old techniques on Youtube, none of them works ; nor engineering codes (#*#*...) Is there a way to know them ? Thank you !
Good luck, but it's almost improbable, Even Pocophone failed.
Sent from my Redmi K20 Pro using Tapatalk
network signal guru which is available in play store with that can change bands of LTE but root access is must
leothomas2580 said:
network signal guru which is available in play store with that can change bands of LTE but root access is must
Click to expand...
Click to collapse
It won't work, if it was that easy it would be miracles, have you tried?
Sent from my Redmi K20 Pro using Tapatalk
ishaqtkr said:
It won't work, if it was that easy it would be miracles, have you tried?
Click to expand...
Click to collapse
Right now I'm using custom rom(evolution x) on my Redmi k20 pro/mi9 t pro didn't tried on Chinese rom
but the bands works using network signal guru
leothomas2580 said:
Right now I'm using custom rom(evolution x) on my Redmi k20 pro/mi9 t pro didn't tried on Chinese rom
but the bands works using network signal guru
Click to expand...
Click to collapse
This from the Network Signal Guru FAQs
Can you changed the band capacities of my cell phone. My cell phones are from other countries and the band capabilities are not so good, and I want more band support. Could NSG do that?
NSG cannot provide this kind of feature and we don't change the band capabilities. It's different among different phones, so it's dangerous and once failed, you will lose all of the band capabilities of certain radio technology. And it's very difficult to recover.
So, no it's not possible to unlock the bands.
Robbo.5000 said:
This from the Network Signal Guru FAQs
Can you changed the band capacities of my cell phone. My cell phones are from other countries and the band capabilities are not so good, and I want more band support. Could NSG do that?
NSG cannot provide this kind of feature and we don't change the band capabilities. It's different among different phones, so it's dangerous and once failed, you will lose all of the band capabilities of certain radio technology. And it's very difficult to recover.
So, no it's not possible to unlock the bands.
Click to expand...
Click to collapse
I knew it, if it was as easy as using an app everyone would import phones from China and modify lol
Sent from my Redmi K20 Pro using Tapatalk
ishaqtkr said:
I knew it, if it was as easy as using an app everyone would import phones from China and modify lol
Click to expand...
Click to collapse
Okay thank you
It's likely the bands are "hardware locked".
So depending on the region of the device various bands will be enabled or disabled. Every region of the device might well have the same modem - and that modem might support all the bands you want - but they won't work and there'll be no way of getting them to work as it'll be on a hardware-level.
It's why when you flash a Global ROM to a Chinese handset bands don't appear and vice versa. Both region ROMs will have their respective modern firmware but that doesn't change what bands you get - which would imply its literally hard-coded into the modem itself.
What I've read on the pocophone implies the band programming is locked, read-only, unmodifiable.
every site i check says mi phone can use lte in my country but i cant connect to it on my phone .... what do i do??
Hello All,
I do often travel around the world. Thats the reason why i choose the OnePlus Nord CE model (the Website promote to support a lot of LTE Bands).
Now I read, that OnePlus disable some LTE Bands for the area outside you live.
I've the EB13BA (EU) model.
Which LTE Bands are supported with that model?
Is it possible to unlock the other Bands?
Will the install of the Global Firmware, unlock the LTE Bands?
Thank you an best regards.
timbach12 said:
Hello All,
I do often travel around the world. Thats the reason why i choose the OnePlus Nord CE model (the Website promote to support a lot of LTE Bands).
Now I read, that OnePlus disable some LTE Bands for the area outside you live.
I've the EB13BA (EU) model.
Which LTE Bands are supported with that model?
Is it possible to unlock the other Bands?
Will the install of the Global Firmware, unlock the LTE Bands?
Thank you an best regards.
Click to expand...
Click to collapse
A prepaid SIM such as "SIM2Fly", which is used temporarily when traveling, will probably work fine.
By the way, my "EB13AA" is
Gsm: 850, 900, 1800, 1900
Wcdma: v1/2/4/5/6/8/19
LTE-FDD: B1/2/3/4/5/7/8/12/17/18/19/20/26/28/66
LTE-TDD: B38/39/40/41
The number of bands is very wide, so the question is probably whether you need "VoLTE" or not.
For Japanese carrier SIMs, many are "VoLTE", so this phone without it enabled will be a Wi-fi only device.
In fact I have been working on that problem for a very long time, and I was able to turn it on only when the OS was "11.0.1.1.EB13AA", but all later OSes were impossible.
There is a bias in the OS files available, and "11.0.1.1.EB13AA" is not currently available on the Internet.
hy, thank you for your reply. I downloaded the 11.0.1.1.EB13AA version on the OnePlus site. But im not sure if it will unlock other LTE Bands. As i say i have the European and not the Global version. Is there a diffrent between a travel SIM and a native SIM?
timbach12 said:
hy, thank you for your reply. I downloaded the 11.0.1.1.EB13AA version on the OnePlus site. But im not sure if it will unlock other LTE Bands. As i say i have the European and not the Global version. Is there a diffrent between a travel SIM and a native SIM?
Click to expand...
Click to collapse
In most cases, a travel SIM can be plugged into a device to get a signal and use it.
I don't know the specifics of the SIM, but the travel SIM should cover the common LTE bands.
And
OnePlus will disable some LTE bands in the area outside where you live.
Even if this is true, it should not disable common LTE bands in the world, such as B3/B20.
This is mostly speculation, but I hope it helps.
If you are unsure, it is fun to flash globalROM boldly.