Develop Bugs

lte+/4g+ carrier aggregation support?????

Does anyone getting CA/LTE+ support on their RN 5 pro. Its mentioned on their website that device supports CA/4G+, but m not getting the CA support in the area where I used to get it on LeMax 2.

Same problem here with the redmi 5 plus.
According to miui forums, carrier aggregation with bands 3+7 doesn't work with xiaomi phones.
This seems to be a bug that has been going on for years with xiaomi phones, and xiaomi doesn't seem to be giving any feedback on this issue.
If you can get some feedback from xiaomi, please report back here. Thanks.

rajat.raj01 said:
Does anyone getting CA/LTE+ support on their RN 5 pro. Its mentioned on their website that device supports CA/4G+, but m not getting the CA support in the area where I used to get it on LeMax 2.
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Click to collapse
I thought the CA is volte support. Do you have global version and what country are you in?

CA (aggregation of multiple bands) and volte (voice over lte = the connection won't switch to 3g during a call, but remain in 4g) are two different things. Volte works with as well as without CA.

Change LTE bands (Unlock band 20)

Hi all
I bought a Chineese Version of the Redmi Note 8 pro. I installed now V10.4.1.0 Global Rom and it works. Last problem is that i need band 20 to have a good 4G connection.
Is it somehow possible that i can unlock and set this band ?
Kind Regards

You cant add new BANDS. China modem no support him !Re-flashing does not help!

I have 4G+ on my RN8 PRO

tze_vitamin said:
I have 4G+ on my RN8 PRO
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Yes, but you have probably the global version. I have only 4G on the Chinese one. Until I go on holiday to China, where it will be 4G+!

polfrank said:
Yes, but you have probably the global version. I have only 4G on the Chinese one. Until I go on holiday to China, where it will be 4G+!
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Yes. I have EU version. I thought that I cant have 4G+ like on Note 7 , because this RN8 pro dont have all bands..

has anyone been able to access Engineer Mode? Mediatek SoCs used to be able to enable bands through it.

ItAintMee said:
has anyone been able to access Engineer Mode? Mediatek SoCs used to be able to enable bands through it.
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This is for MTK

ItAintMee said:
has anyone been able to access Engineer Mode? Mediatek SoCs used to be able to enable bands through it.
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Click to collapse
yes dial *#*#3646633#*#* for engineering mode

lamkanet said:
yes dial *#*#3646633#*#* for engineering mode
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Click to collapse
可以進去 要在ADB 打指令 adb shell am start -n com.mediatek.engineermode/.EngineerMode

lamkanet said:
yes dial *#*#3646633#*#* for engineering mode
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cool, but has anyone verified if changes in BandMode enable LTE bands? The G90T has the WorldMode modem and is capable of picking up just about every LTE band used throughout the world.

ItAintMee said:
cool, but has anyone verified if changes in BandMode enable LTE bands? The G90T has the WorldMode modem and is capable of picking up just about every LTE band used throughout the world.
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Redmi NOte 8 Pro has big problems with LTE 4G + tape management. The phone does not keep the 4G + it switches and stays in 4G all the time. It's a modem management problem that does not support the double-banding needed for 4G +.
Bests Regards

elibraty said:
Redmi NOte 8 Pro has big problems with LTE 4G + tape management. The phone does not keep the 4G + it switches and stays in 4G all the time. It's a modem management problem that does not support the double-banding needed for 4G +.
Bests Regards
Click to expand...
Click to collapse
Hello, could you please specify what kind ofLTE band issues this phone have? I've just ordered Global vers. with 128 GB ROM, where Band 20 (800) is the most important for me, as it is the most frequently used one in Türkiye. It doesn't exist in my Mi5, so hope the signal and speed would be better with Redmi Note 8 Pro.

anyone played around with trying to unlock more bands? pretty sure the modem has the ability to get them all, and is just software locked for one reason or another

Even I go to engineering mode. It still cannot unlock the band 7 / 20.
it seem Chinese version cannot unlock the band.
I hope some expert can do it later and share with us.

How do you use themes?
tze_vitamin said:
I have 4G+ on my RN8 PRO
Click to expand...
Click to collapse
I also have the European version, though how are you able to use themes?
Not working for me.

peoeope said:
I also have the European version, though how are you able to use themes?
Not working for me.
Click to expand...
Click to collapse
Normal. I set Region to my country Serbia and use themes without problems.

elibraty said:
Redmi NOte 8 Pro has big problems with LTE 4G + tape management. The phone does not keep the 4G + it switches and stays in 4G all the time. It's a modem management problem that does not support the double-banding needed for 4G +.
Bests Regards
Click to expand...
Click to collapse
what do you mean by "tape management"? If it's a modem management problem, then it is software related. Helio G9T's HAVE the WorldMode modem, what you're describing doesn't make sense and doesn't answer my question.
---------- Post added at 09:51 PM ---------- Previous post was at 09:49 PM ----------
q26000 said:
Even I go to engineering mode. It still cannot unlock the band 7 / 20.
it seem Chinese version cannot unlock the band.
I hope some expert can do it later and share with us.
Click to expand...
Click to collapse
it's probably a modem firmware issue. the problem is the Helio G90T is only available on the RN8 Pro, so swapping modem firmware from another device isn't happening. I wonder if anyone with the Global variant has tried though.

I have Note 8 pro Global Version and band 7,20 is enable by default.

may work
Alteschwed said:
Hi all
I bought a Chineese Version of the Redmi Note 8 pro. I installed now V10.4.1.0 Global Rom and it works. Last problem is that i need band 20 to have a good 4G connection.
Is it somehow possible that i can unlock and set this band ?
Kind Regards
Click to expand...
Click to collapse
[Обсуждения] [Нужен ROOT] Разблокировка LTE Band на XIAOMI с процессором QUALCOMM
4. Скачать и установить QPST, QXDM
Restriction. I can not give a link. You can try.

My RM8pro is the global version... But in spain doesn´t get de 4g+..... The region it´s set up to spain... i´m so confuse, when i use the app to verify the band always shows b3 (1800) no b20 (800). Some help please¡¡¡¡¡¡

Support for Carrier Aggregation LTE-Advanced(4G+)/LTE-Advanced-Pro(4.5G)?

Hello guys, I imported the device in the global version and read on some topic that it does
not support carrier aggregation LTE-Advanced(4G+)/LTE-Advanced-Pro(4.5G) anyone else to confirm this?

I confirm . Same problem whit vodafone italy , no carrier aggregation whit x2 but no problem whit x2 pro

ginepraio said:
I confirm . Same problem whit vodafone italy , no carrier aggregation whit x2 but no problem whit x2 pro
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Click to collapse
Strange that they have limited this on the phone their version is the global one right?
Maybe if we press Realme he will release Carrier Aggregation, do you have the link of the email or forum?

yes, global model with b20, even I could not believe it, probably lte + is not essential but I still cannot understand how it is possible that it is absent in a medium-high end device in 2020. I'm also looking for a forum or an email to ask for explanations.

ginepraio said:
yes, global model with b20, even I could not believe it, probably lte + is not essential but I still cannot understand how it is possible that it is absent in a medium-high end device in 2020. I'm also looking for a forum or an email to ask for explanations.
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Apparently a large part of these medium-high Chinese smartphones have support for Carrier Aggregation blocked I saw in some post how to unlock the MI9 Chinese version and other phones
may work on Realme X2, however when I get mine I'll do the tests and try to unlock although I think it hardly reaches those speeds in my country and data plan,
well at least there is the B28 band that is not much like that price segment

LMartins.338 said:
Hello guys, I imported the device in the global version and read on some topic that it does
not support carrier aggregation LTE-Advanced(4G+)/LTE-Advanced-Pro(4.5G) anyone else to confirm this?
Click to expand...
Click to collapse
Hello Sir almost everyone is facing this issue. For more info,I would suggest you to join the official telegram group @realmeX2Official , where you can connect with other x2 users and get instant solution for doubts and problems. Also we're working on custom roms. So join to get instant updates.

Oppo RealMe X2 support only Contiguous CA: https://cacombos.com/device?model=RMX1993EX - So this is reason why you don't get LTEA working in your network because your network do Non-Contiguous CA.

olkitu said:
Oppo RealMe X2 support only Contiguous CA: https://cacombos.com/device?model=RMX1993EX - So this is reason why you don't get LTEA working in your network because your network do Non-Contiguous CA.
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Bro can u tell me about my phn ?? I have s20+ G986W nd I'm using jio sim nd it support band 3,5,40 can u please check that why my mobile is not enabled CA, coz other phones have CA nd they are using jio sim nd their network is LTE+ but in my s20+ is only LTE , nd when I chk 0011# it show's CA not config

FearLesS007 said:
Bro can u tell me about my phn ?? I have s20+ G986W nd I'm using jio sim nd it support band 3,5,40 can u please check that why my mobile is not enabled CA, coz other phones have CA nd they are using jio sim nd their network is LTE+ but in my s20+ is only LTE , nd when I chk 0011# it show's CA not config
Click to expand...
Click to collapse
https://cacombos.com/device/SM-G986W Because your device doesn't support Carrier Aggregation combinations between 3, 5 and 40. You can check that easily on linked website.

olkitu said:
https://cacombos.com/device/SM-G986W Because your device doesn't support Carrier Aggregation combinations between 3, 5 and 40. You can check that easily on linked website.
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Bro there is no CA bands showing in link it's showing LTE nd LTE 4x4, where I can see ???

FearLesS007 said:
Bro there is no CA bands showing in link it's showing LTE nd LTE 4x4, where I can see ???
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Click to collapse
It show CA combinations = bands what can be aggregated together. Just scroll little bit down to see table.

olkitu said:
It show CA combinations = bands what can be aggregated together. Just scroll little bit down to see table.
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Click to collapse
I check the scroll down but m not understanding can u pls give example of 1,2 examples then I can better understand for future also on same site I will check for new phone

olkitu said:
It show CA combinations = bands what can be aggregated together. Just scroll little bit down to see table.
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Click to collapse
S20+ G985F is global version it's also showing same , nd I sell that global version coz of Exynos nd it was LTE+ enabled, it was support CA with my sim , but the thing is which site link u gave me it's showing same for both, then why my this model not support CA ??

FearLesS007 said:
S20+ G985F is global version it's also showing same , nd I sell that global version coz of Exynos nd it was LTE+ enabled, it was support CA with my sim , but the thing is which site link u gave me it's showing same for both, then why my this model not support CA ??
Click to expand...
Click to collapse
Both model support CA but different combinations. Canada model is optimized to Canadian networks and Global to Global networks like India, Europe, Australia, Middle East... Just different models are targeted to different market area.

Of
olkitu said:
Both model support CA but different combinations. Canada model is optimized to Canadian networks and Global to Global networks like India, Europe, Australia, Middle East... Just different models are targeted to different market area
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Click to collapse
If we install indian firmware ??? Then any solution ???

FearLesS007 said:
Of
If we install indian firmware ??? Then any solution ???
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Click to collapse
I think you can't just install because in India sold global variant and global variant is Exynos vs Canadian variant is Qualcomm...

Question Oneplus 9 pro telus 5G

Hi, I have a question about telus 5G, anyone can connect telus 5G network? I don't even have 5G switch in setting.
thank you!

I have a OP9 and same issue. Data is also very slow but that could be a separate issue.

If it's available/provisioned to your SIM, I'd assume that setting your Preferred Network Type to the variant that includes 5G should allow it to be received.
I support some clients on Telus, but I'm not well versed in how they're rolling out 5G and/or what bands they're using, etc.

basilray said:
If it's available/provisioned to your SIM, I'd assume that setting your Preferred Network Type to the variant that includes 5G should allow it to be received.
I support some clients on Telus, but I'm not well versed in how they're rolling out 5G and/or what bands they're using, etc.
Click to expand...
Click to collapse
Thank you tho, I called telus, they said band N66 supported but their system band uncertified device, oneplus 9 pro won't be able to connect 5G shortly, hope they will unlock it months later.

rickysidhu_ said:
I have a OP9 and same issue. Data is also very slow but that could be a separate issue.
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Click to collapse
I called telus, it was banned by their side, won't be supported, but they also told me that for now in canada, all 5G providers are not providing 'real' 5G, just use 4G is still fast.

akm4100 said:
I called telus, it was banned by their side, won't be supported, but they also told me that for now in canada, all 5G providers are not providing 'real' 5G, just use 4G is still fast.
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Click to collapse
What do you mean by banned? They aren't allowing 5G on OP devices?

rickysidhu_ said:
What do you mean by banned? They aren't allowing 5G on OP devices?
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Click to collapse
for now bad answer is YES, they ban phone by brand, they told me only LG, HUAWE, Samsung, Apple etc on their wesite will be supported out of box, but other brand not guaranteed.

akm4100 said:
for now bad answer is YES, they ban phone by brand, they told me only LG, HUAWE, Samsung, Apple etc on their wesite will be supported out of box, but other brand not guaranteed.
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Click to collapse
In other words "Buy a phone from us if you want 5G".
Sounds like a money grab from Telus.

akm4100 said:
for now bad answer is YES, they ban phone by brand, they told me only LG, HUAWE, Samsung, Apple etc on their wesite will be supported out of box, but other brand not guaranteed.
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That's unfortunate. I swear I remember my OnePlus 8 Pro being 5G compatible though. I never saw it in the status bar but it was an option inside settings. Strange that the 9 is not seeing 5G anywhere.
Maybe someone will come out with some kind of mod or tool to force 5G.

Hola
Sad situation this is. Stranger still is that I had a Xiaomi Mi 10 last year and I was able to get 5G in certain locations. And at one point Telus was the least restrictive when it came to VoLTE and WiFi Calling enablement on non-Telus branded phones.

5G is not enabled in Telus 5G-network. Here is listed 5G supported devices: https://mt.ax/0x390
To enable 5G, you can follow my blog guide: https://mt.ax/uLgc2 .

olkitu said:
5G is not enabled in Telus 5G-network. Here is listed 5G supported devices: https://mt.ax/0x390
To enable 5G, you can follow my blog guide: https://mt.ax/uLgc2 .
Click to expand...
Click to collapse
thank you for the instraction, but oneplus 9 pro is not listed, hope someone will update it.

akm4100 said:
thank you for the instraction, but oneplus 9 pro is not listed, hope someone will update it.
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Click to collapse
Instruction is about same for OnePlus 9 too.

olkitu said:
Instruction is about same for OnePlus 9 too.
Click to expand...
Click to collapse
I've tried this method, confirm it dosen't work, but still thank you!

Are you able to get VoLTE or VoWifi ?

Question Carrier compatible to Redmi K40 5G in USA?? Will POCO F3 Work?? Which carrier??

Anyone know which US carrier can use the Redmi K40??
I tried: ATT, Cricket, T-Mobile and Mint but none of them work.
Any info would help. Thanks.
Also, will POCO F3 work in USA?? Which carrier can be used??
Thanks.

Will Xiaomi Redmi K40 work in USA?
In this page we are going to show you the compatibility of Xiaomi Redmi K40 with the mobile networks of USA and with the telephony operators that provide service in USA.
www.kimovil.com
Doesn't support tomany bands US looks like T-Mobile be best I would go with the Poco global F-3 here in the US support's more bands and still T-Mobile/Tello/mint would be your Best bet ,Tello is what I use since they Use T-Mobile towers on my Poco F3 and 5G and volte And WiFi calling all work great

jefffrom said:
Will Xiaomi Redmi K40 work in USA?
In this page we are going to show you the compatibility of Xiaomi Redmi K40 with the mobile networks of USA and with the telephony operators that provide service in USA.
www.kimovil.com
Doesn't support tomany bands US looks like T-Mobile be best I would go with the Poco global F-3 here in the US support's more bands and still T-Mobile/Tello/mint would be your Best bet ,Tello is what I use since they Use T-Mobile towers on my Poco F3 and 5G and volte And WiFi calling all work great
Click to expand...
Click to collapse
How about POCO F3?? Will it work on the US carriers??
Thanks.

I received my poco f3 and am using it right now as I am typing. For the most part it works. Support for bands is limited though. I think that is the reason why I can't verify my account to unlock bootloader. I can make phone calls fine. The problem is sometimes I don't receive calls or messages are delayed.

hons9424 said:
How about POCO F3?? Will it work on the US carriers??
Thanks.
Click to expand...
Click to collapse
Did you read my post I said f3 that's what I would go with US T-Mobile or any carrier that piggybacks off them like tello and mint

jackscagnetti said:
I received my poco f3 and am using it right now as I am typing. For the most part it works. Support for bands is limited though. I think that is the reason why I can't verify my account to unlock bootloader. I can make phone calls fine. The problem is sometimes I don't receive calls or messages are delayed.
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Click to collapse
Who's your carrier? All info helps when posting

T-Mobile

I'm using Cricket and Ultra. I brought the K40 want to use Cricket but didn't work. Tried Mint also no luck. Then it's working with Ultra.
I need one to use Cricket so thinking about POCO F3 or Xiaomi 11 Lite or 11i.
Also I live in Hawaii that T-Mobile is very weak !!!

jackscagnetti said:
T-Mobile
Click to expand...
Click to collapse
if your having problems with T-Mobile you either have the wrong sim card or your SOL

hons9424 said:
I'm using Cricket and Ultra. I brought the K40 want to use Cricket but didn't work. Tried Mint also no luck. Then it's working with Ultra.
I need one to use Cricket so thinking about POCO F3 or Xiaomi 11 Lite or 11i.
Also I live in Hawaii that T-Mobile is very weak !!!
Click to expand...
Click to collapse
ki Rick iT is CDMA /boost mobile /old sprint /// it will not work good . if you got a low T-Mobile single then your sol..

jefffrom said:
ki Rick iT is CDMA /boost mobile /old sprint /// it will not work good . if you got a low T-Mobile single then your sol..
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Click to collapse
ki Rick iT????

I do not recommend buy Xiaomi devices to US because Carrier Aggregation and 5G support so limited, here listed Poco F3 supported combinations: https://cacombos.com/device/M2012K11AG

jefffrom said:
if your having problems with T-Mobile you either have the wrong sim card or your SOL
Click to expand...
Click to collapse
It's the stupid MIUI sim activation process. It just won't work no matter what I try. In going to try anduwa new ROM.