yashsingh1/xdaforums huggingface dataset:
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
Yes, you can check whether CA is working or not.

1. Open Phone Dialer and dial "*#*#4636#*#*" to enter in Testing menu.

2. Tap on Phone Information and check "LTE physical channel configuration".

If CA is working, It will show you two connections Primary and Secondary along with their bandwidth, otherwise nothing.

You can look at the screenshots attached below for difference with or without CA.

I have configured intra-band CA over band 40 on Jio4G. :)
[Xiaomi Mi A1 Guides, News, & Discussion] Vishal21896:
Does it works for inter band CA ? Like b5+b3 for jio and b3+b40 for Airtel. I tried through QXDM but not working for inter band CA . Only band 40-40 intraband CA is working. Can someone confirm this?

TIA
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
It works on both intra-band and inter-band CA.
[Xiaomi Mi A1 Guides, News, & Discussion] Vishal21896:
If so can you kindly post screenshot of network signal guru with interband CA?

TIA
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
i can't because network signal guru requires root :)
[Xiaomi Mi A1 Guides, News, & Discussion] carastroren1991:
*Solved*
[Xiaomi Mi A1 Guides, News, & Discussion] shmp30:
Thanks for good guide. is there any root way to this process easier?
[Xiaomi Mi A1 Guides, News, & Discussion] birarvindersingh:
I am using Airtel, I want to enable 4G+ but my bootloader is locked. So, can I do this? After doing this, will I face any problems in OTA because of new firmware and modem with upcoming updates and any random reboots will happen?
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
You don't need root access if you can enable diagnostic mode via USSD code
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
Yes, you can do this even with locked bootloader. And you will not face any random reboot or OTA issues.
[Xiaomi Mi A1 Guides, News, & Discussion] Guarino95:
hi everyone, i have a very similar phone with the same SoC...i tried both with custom and stock ROM but once i open QXDM and enstablish connection i can't find RF LTE. is there something i am doing wrong?
[Xiaomi Mi A1 Guides, News, & Discussion] .:Addicted:.:
Like not clicking that drop down arrow & looking little down. May be
[Xiaomi Mi A1 Guides, News, & Discussion] Guarino95:
Wow, you are very kind i see. I actually clicked the dropdown and looking all the way to the bottom i can only find LTE (not RF LTE), or RF WCDMA but It does not contain the values i am looking for (i checked all the values under Factory too). Also my values only reach ID 65xxx, not 70xxx as stated in this thread or orhers on the forum.
[Xiaomi Mi A1 Guides, News, & Discussion] mattodinaturas:
You have to use a newer version of QXDM professional
[Xiaomi Mi A1 Guides, News, & Discussion] Guarino95:
Thanks. Any clue on where to find It? Actually the One listed here didn't work (activation required) so i managed to download another one, and It was version 3.12 i think
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
Install that again and for activation, copy "qlms.txt" from zip you have downloaded and paste it into "C:\Users\Public\Documents\Qualcomm\QXDM", then copy "QXDM.EXE" from zip and paste it into C:\ProgramFiles\Qualcomm\QXDM\bin.

:)
[Xiaomi Mi A1 Guides, News, & Discussion] Guarino95:
will do it, thank you very much...actually sorry, i just noticed there was an IMPORTANT.txt with all the info

Also my carrier uses b20, b1, b3 and b7, and it allows any aggregation between them (like b3+b3, b3+b1, b3+b7, b3+b20, etc...) is there a way i can configure my phone to use the bands in this way? because if i have to enable b1+b3 for example i have to set the same value under these bands on QXDM, what if i want to configure b1+b7 too for example? what value do i have to enter under the b1 configuration to let it aggregate with both b3 and b7 for example?
[Xiaomi Mi A1 Guides, News, & Discussion] rexendz:
I'm on a custom pie rom rooted with magisk and USSD code did not work so I tried using adb shell to enable diagnostic mode but the drivers won't install. When I disconnect and reconnect my phone, getprop sys.usb.config shows mtp,adb. How do I install qualcomm drivers in my situation?

edit:

Nevermind me, I switched to another PC and the drivers are now installed. If you encountered a similar case such as mine, try using another machine as Windows may not successfully install the drivers without notifying you.

For Globe Telecom users like me, CA_3A-28A(B3+B28), CA_41C(B41+B41) and CA_40A-41A(B40+B41) are supported.

Source: https://halberdbastion.com/intelligence/mobile-networks/globe-telecom
[Xiaomi Mi A1 Guides, News, & Discussion] Vishal21896:
No matter how much effort you put to enable CA only intraband CA will work not interband.
[Xiaomi Mi A1 Guides, News, & Discussion] cloud1250000:
I know this might be random.. but I was wondering if.. by chance.. my phone was working with lte+ even if the icon is just reporting lte..

This is not a mia1 but you guys seemed to know your stuff..

Thanks
[Xiaomi Mi A1 Guides, News, & Discussion] Apih95:
Mine showing b3 and b7 on network signal guru, when i did b3+b7 , nothing happen. So then i tried b3+b3 still nothing.. i guess umobile didnot have 2ca yet which is sad..

EDIT: im on custom rom los16, latest October fastboot rom before clean flash los16
[Xiaomi Mi A1 Guides, News, & Discussion] EHSAN™:
Tried on Mi Note 3 With Irancell (B3+B7) And Didnt Work...
[Xiaomi Mi A1 Guides, News, & Discussion] marniel647:
Can confirm B3+B28 are working for globe. I did not try the other combination of band. I only have 2 signal outside my house and it has an improvement when using data.

I'm not on a latest firmware but if i update my firmware do i need to do this again?
[Xiaomi Mi A1 Guides, News, & Discussion] mrak11:
thanks for this useful thread, anybody here using Suncellular under Smart Telecom Philippines?

I think these bands are possible for CA as they are supported.

B1+B3

B1+B5

B3+B5

you can also try B28, B40, and B41
[Xiaomi Mi A1 Guides, News, & Discussion] apfo:
Could this method work in a different Xiaomi smartphone?
[Xiaomi Mi A1 Guides, News, & Discussion] sintronics:
Hello

If I do this process, will I lose access to the other LTE bands??

Cheers
[Xiaomi Mi A1 Guides, News, & Discussion] sintronics:
B5+B5, B40+B40

How can I put the same number??

B5=16

B40= 549755813888

Can you please give more instructions...

Thank you
[Xiaomi Mi A1 Guides, News, & Discussion] tiarap00:
Will this method work on Realme Pro 5?
[Xiaomi Mi A1 Guides, News, & Discussion] tiarap00:
Does this modification persist if i unroot my phone?
[Xiaomi Mi A1 Guides, News, & Discussion] birarvindersingh:
Yes
[Xiaomi Mi A1 Guides, News, & Discussion] raiden_1115:
Can I do this mod on custom rom?
[Xiaomi Mi A1 Guides, News, & Discussion] mrak11:
Yes, you can..
[Xiaomi Mi A1 Guides, News, & Discussion] alincipes:
does this tutorial work on xiaomi redmi 8?
[Xiaomi Mi A1 Guides, News, & Discussion] ThanveerAliSayed:
Deleted
[Xiaomi Mi A1 Guides, News, & Discussion] ThanveerAliSayed:
Where to put values for getting the intra band CA of b40+b40. As per tutorial it is supposed to put the sum values we get from lte calculator in the input fields of both bands. Like b40 and b3 for example

But for b40+b40. Only putting value in b40 is enough ? What value should i put . As there is no way to find what sum values of b40+b40
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
It should work but i am not 100% sure because currently i don't have any device running on MIUI 11 rom.

For intra-band CA you don't need to sum any values. Just put the value of that particular band.

e.g. - Let's consider your case, you want to enable intra-band CA over band 40. For this select Band 40 in "Lte Band calculator" app and write the value that you got from app in "RFNV LTE B40 CA BC CONFIG".
[Xiaomi Mi A1 Guides, News, & Discussion] HSNP:
I tested this method on Redmi Note 8 MIUI 11 B3+B7 and it didn't work :(

I'm sure my area has 4G+ coverage because my Samsung S6 shows 4G+
[Xiaomi Mi A1 Guides, News, & Discussion] MustangBR:
If I have three lte bands in my region, can I combine all values of three bands to have CA automatically selecting the better available 4g+ connection?

For example, in my region the bands and respective values:

Band 3 - 4

Band 7 - 64

Band 28 - 134217728

If I combine

B3 + B7 = 68

B3 + B7 + B28 = 134217796

If I combine B3 + B7 + B28 and put the values ​​in QXDM in respetives places, I will have all three possible CA connections ? Like B3 + B7; B3 + B28 and B7 +B28

Thanks in advance
[Xiaomi Mi A1 Guides, News, & Discussion] alincipes:
hey guys my phone specs says it has LTE-A but doesnt have LTE-A (2ca) or (3ca) etc. only LTE-A. does that mean i cant enable 4g+ ?
[Xiaomi Mi A1 Guides, News, & Discussion] varaprasad1947:
guys , anyoneever done this method in ubuntu ?????????
[Xiaomi Mi A1 Guides, News, & Discussion] arkadeep2008:
Anyone from Kolkata region & using Airtel network working 4G+ ??
[Xiaomi Mi A1 Guides, News, & Discussion] tiagoaugustobr:
Can someone help me? I have Xiaomi Redmi 8, and the phone is not bundling the 2600 + 1800 networks.
[Xiaomi Mi A1 Guides, News, & Discussion] kshah:
Method works but some how instable connection and lower speed than k20pro

THANKS, This method tried on MI A1, I put value for various bands as I use airtel and jio. Used value for 1,3,5, 40 and certain other combination. However I found tha speed i am getting on phone is not as much as Redmi k20 pro and connection is not as stable as k20pro

K20pro data speed is atleast twice as much as MI A1. Since k20pro can not be connected thru diag (diag is disabled) i checked info available thru *#*#4636#*#* and found that it shows 2147483647 which when put in LTE band calculator , it shows all band from 1 to 31 not 40 which is used by airtel and jio both.

However network and cell info shows LTE+ on k20pro. I don't have laptop in hand so will program my A1 with 2147483647 and check if I get stability and speed.
[Xiaomi Mi A1 Guides, News, & Discussion] niraj5.chaudhari:
Please Help

I actually flashed gsi roms many times trying different vendor and boot files (no success) but it resulted into volte not working though data is working...I flashed stock rom and followed this thread steps to cure Volte problem updated input numbers to B5 CA BC config and B3 CA config ...and now I see 4g+ ( before it was 4g) and still Volte is not working... I'm not able to call from Jio

Using Airtel as primary sim and Jio as secondary sim
[Xiaomi Mi A1 Guides, News, & Discussion] tltan86:
doesn't work with redmi 4 prime (markw). able to follow the step successfully but still connected by intraband. what should i do next? thanks.
[Xiaomi Mi A1 Guides, News, & Discussion] iwan82:
First of all thank you for this tutorial. You're great guys.

I've tried to unlock lte + on Meizu 16xs global version. I install all tools. There was a problem to dial *#*#717717#*#* (nothing happened) but I use *#*#13491#*#* and showed that adb success.

Then I run QPST and then Qxdm as PC admin, it showed my phone and com port. I found RFNV LTE B configuration. I use orange career in Poland. It use B1, B3, B7 and B20 LTE. Change 0 to calculated value and reset phone and lte+ doesn't work. Tried many configuration but no success. .

Can you help me? Is there a change unlock Meizu Lte Advanced? It has Snapdragon X12 LTE modem so should work. When I open Qxdm and click read there are value which I input but no lte+. Meizu block changes? Phone is not rooted.

It seems to Meizu 16 and x12 allows to connect up to tree bands in the same time. I've tried to write combination of 2,3 other bands and doesn't work. No lte+, no info about it on using dialer *#*#4636#*#*.
[Xiaomi Mi A1 Guides, News, & Discussion] zurik:
It seems this tutorial don't work. My carrier supports CA, on my secondary device has 4G+ but on Tissot not.
[Xiaomi Mi A1 Guides, News, & Discussion] Displax:
B3 + B7 (maybe other 2CA too) can be enabled on A1, but it is very unstable and causes network reconnection loops. Pretty unusable.
[Xiaomi Mi A1 Guides, News, & Discussion] zurik:
Can someone tell which values has B3 + B3?
[Xiaomi Mi A1 Guides, News, & Discussion] DCXW:
Bro i think it doesn't work.

I'm using Digi in KL, set b3 + b7 as CA, but still showing 1 band only.

So far seeing most of the successful CA related users are from India. We need more malaysian Mi A1 user to try this out
[Xiaomi Mi A1 Guides, News, & Discussion] roshan2989:
hi mate,im from malaysia,penang area..im using maxis b3 + B7 band,already enable but keep showing 1 carrier.if i swap my sim to my OnePlus 5 it goes to 4g+ using the same band b3+b7.

weird
[Xiaomi Mi A1 Guides, News, & Discussion] DCXW:
Yeah that is what im facing too.

I did all the guide given without any problems, but the result is its only showing 1 carrier. I tried Digi & Celcom but no CA, only 4G.

The minute i tried putting both sim into the S9+, it shows 4G+ with CA. Maybe something to do with telco band ?
[Xiaomi Mi A1 Guides, News, & Discussion] roshan2989:
not sure about it.
[Xiaomi Mi A1 Guides, News, & Discussion] Aldrinjose007:
I am stuck in Step 6 .... My device is not listed

My device is not listed in step 6

But listed in step 5, but says device not currently connected....

what to doooo....

thanks in advance
[Xiaomi Mi A1 Guides, News, & Discussion] kokos94:
Anyone from greece ? has tested it ? which band to select ? band 20 ?

---------- Post added at 10:59 AM ---------- Previous post was at 10:58 AM ----------

Anyone from greece ? has tested it ? which band to select for cosmote? band 20 ?
[Xiaomi Mi A1 Guides, News, & Discussion] kokos94:
Well ... i did it.. without success unfortunately ! :( :(

In Greece for Cosmote

regarding that article

https://halberdbastion.com/intelligence/mobile-networks/cosmote

and so

Carrier Aggregation

CA_3A-7A (B3+B7)

CA_3A-7A-20A (B3+B7+B20) Features	VoLTE

i gave a try with the combinations

B7+B20 so the code is 524352

B3+B7 so the code is 68

and i tried just B20 so the code is 524288

but non of them worked for me !

If anyone knows something more please let me know !

Thank you ! :) :)
[Xiaomi Mi A1 Guides, News, & Discussion] zurik:
I have tried both B20 + B20 , B7 + B7, B3 + B3, B20 + B7, B20 + B3, B3 + B7, but no one of these worked for me, when an older device I have (Nexus 5X) locks at B7 + B7 or B3 + B3 2CA where I live.
[Xiaomi Mi A1 Guides, News, & Discussion] kokos94:
Do you speak english ?

I am sorry my friend ! i dont understand you ! non of those combinations worked for you for the Mi A1 or for the older device that you have ( nexus 5x ) ! you are at Mi A1 forum ! you should reply about that ! probably you are kinda dizzy after Olympiacos is the Champion ! im kidding of course ! :) :)
[Xiaomi Mi A1 Guides, News, & Discussion] zurik:
I know that's the Mi A1 forum, I have Mi A1. Nexus 5X I mentioned it as an example.

I mean, I tried all band combination, didn't worked.
[Xiaomi Mi A1 Guides, News, & Discussion] Rk780:
[MENTION=9254486]anshsharma240[/MENTION] hii bro I will follow the same process to enable LTE+ on my redmi note 7 pro I will follow all process but I face a issue when I change the band value it will do not change pls help me (currently I am using ancient os costom ROM based on Android 10 and ROM has been rooted)
[Xiaomi Mi A1 Guides, News, & Discussion] chteh0721:
not working in sabah as well with A1, but when switch phone to POCO X3 manage to get 4G+ with digi
[Xiaomi Mi A1 Guides, News, & Discussion] thelazyindian:
If you are reading this as well as trying to do this on Mi A1. just don't. It's unusable and very unstable.
[Xiaomi Mi A1 Guides, News, & Discussion] iAmWiz:
I want to try this on Redmi Note 9S. I'll bring back results if it works.

EDIT: the setprop command didn't prompt anything on my phone and there was no com port detected in device manager. Probably because I am using ArrowOS based on Android 11.

EDIT 2: I have flashed MIUI 12, gotten to diag mode, but all my efforts to enable LTE+ seem futile.
[Xiaomi Mi A1 Guides, News, & Discussion] iAmWiz:
I've tried both inter band and intra band none has worked..

Redmi Note 9s
[Xiaomi Mi A1 Guides, News, & Discussion] pooniaprashant:
Same, I did that once it was quite popular, saw no speed difference, rather network fluctuations were increased. Won't advise anyone to do this.
[Xiaomi Mi A1 Guides, News, & Discussion] Rajatguptaagra:
I am using Realme 2 Pro(Snapdragon 660) Indian variant. Can I enable carrier aggregation on my phone without unlocking bootloader and root access and is the process same or little bit different.
[Xiaomi Mi A1 Guides, News, & Discussion] starweb:
There is a new USSD code to enable Diag mode. Does not require root, however, the bootloader needs to be unlocked. This was tested on Mi A3.

Enable "USB Debugging"on your phone.

Connect it to your PC/Laptop.

Enter below in phone app.

*#*#13491#*#*
[Xiaomi Mi A1 Guides, News, & Discussion] Evilarale:
CustomROM composed when not playing the Internet + symbol is missing I want + to last all the time, thank you.
[Xiaomi Mi A1 Guides, News, & Discussion] Dr_harepan:
In my country, aggregation happens on B3 & B7 or two B7

I tried both them,passed every single step successfully

Now when come back to QXDM and check b3 and b7, I can see the number 68 and it means operation was successful

But no 4.5G or 4g+ happens:(

Help me please

Redmi note 8 (ginkgo)

LTE bands: B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B20 (800), B38 (TDD 2600), B40 (TDD 2300)

Rooted with magisk (u can see other software info in ss I've attached)

Pleaaase help me
[Xiaomi Mi A1 Guides, News, & Discussion] mustow:
4g+ in redmi note 7 pro enabled and in jio company in west bengal
[Xiaomi Mi A1 Guides, News, & Discussion] Broken267:
hey first time the qualcomm 9091 port worked but now its shows 901D port only, the 9091 enables during boot and then revert backs to 901D.
[Xiaomi Mi A1 Guides, News, & Discussion] Jurn_Software:
On Mi A2 does not work. Everything is done according to instructions.

B3+B7+B8 = 196 on all of bands.
[Xiaomi Mi A1 Guides, News, & Discussion] jan1127:
can somebody give a link for the newer version? the QXSM proffesional license exired from the link given
[Xiaomi Mi A1 Guides, News, & Discussion] VenomHanta:
Nobody has figured out on how to do it on mediatek devices?
[Xiaomi Mi A1 Guides, News, & Discussion] debido666:
What bands would I use for AT&T?
[Xiaomi Mi A1 Guides, News, & Discussion] Snowwow:
Would this also work on the Snapdragon S21? I have to olympic edition which has limited CA in my country. I want to expand that.
[Xiaomi Mi A1 Guides, News, & Discussion] Megh rana:
idk why but in my mi a1 i cannnot enable diag mode neither via dialer nor via adb, i have root access but when i type su i dont get any prompt for giving root access, and when i type setprop sys.usb.config diag,adb then it disconnects my device and then my device does not show up in device manager nor in qpst
[Xiaomi Mi A1 Guides, News, & Discussion] Steve Wozniak:
I have the same problem. Any solution
[Xiaomi Mi A1 Guides, News, & Discussion] DiegoKcrz:
Excelente muy bien explicado, crees que funcione en otra marca como LG? Hace unas semanas era posible cambiar el firmware de sprint en algunos teléfonos LG a uno libre, algo que antes se creía imposible, pero tengo dudas si este procedimiento se podría hacer en un LG.

Si es posible ponerlo en modo emergencia y dejar este puerto en la PC "Qualcomm HS USB Diagnostics 9091 (COM*)". QFIL también se usa para modificar particiones de memoria. Me gustaría hacer la prueba pero tengo miedo de dañar mi móvil.
[Xiaomi Mi A1 Guides, News, & Discussion] DiegoKcrz:
Bro la instruccion estan dentro de la app

1. Debe copiar qlms.txt en C:\Users\Public\Documents\Qualcomm\QXDM

(o C:\Documentos y configuraciones\Todos los usuarios\Documentos\Qualcomm)

2. Sobrescriba qxdm.exe en Archivos de programa\Qualcomm\QXDM\bin con el proporcionado
[Xiaomi Mi A1 Guides, News, & Discussion] sintronics:
It doesn't work, because you can use only 2CA

Use B3 + B7

You have to find what's the best for your country and operator example ( Vodafone )

Check here....

LTE-Advanced (Rel. 10+) | Powertec Information Portal

3GPP continued development of the LTE standard, finalising Release 10 in September 2011. LTE-Advanced, or LTE-A focused on improving network capacity. The key new functionalities introduced were Carrier Aggregation (CA), enhanced use of multi-antenna techniques, and support for Relay Nodes (RN)...

halberdbastion.com
[Xiaomi Mi A1 Guides, News, & Discussion] OhNaNa30:
hi, can anyone help me with this, i have the samsung s10+ g975u1. im having this issue with qpst. and cant browse efs explore.
[Xiaomi Mi A1 Guides, News, & Discussion] Jurn_Software:
that doesn't work either(
[Xiaomi Mi A1 Guides, News, & Discussion] Luxus96:
I'm trying to enable 4g+ on the pocophone f1 (beryllium)

the combos he can use are not possible in Italy, I have access to qspt, has anyone in Europe managed to unlock it?
[Xiaomi Mi A1 Guides, News, & Discussion] iwanffc:
Meizu diag cod is *#*#88#*#*. Works on Meizu 20 Pro. I will try if I aggregate bands.

OK, LTE band aggregated in Meizu 20 Pro. Does anybody know know to aggregate NSA bands?
[Xiaomi Mi A1 Guides, News, & Discussion] Shafiq baloch:
QxDM Professional link is down, can you reupload it?
[Xiaomi Mi A1 Guides, News, & Discussion] raiden_1115:
Does the settings still persist after doing a factory reset?
[Xiaomi Mi A1 Guides, News, & Discussion] Graju:
It works on Miui 10 [Oreo] Epic rom
[Xiaomi Mi A1 Guides, News, & Discussion] .:Addicted:.:
I think it will only revert when u flash ROM.(modem.img file).

[MENTION=9254486]anshsharma240[/MENTION] i can't see 4g+ even after editing on Airtel network

LTE Physical Channel Configuration not present in Phone info.
[Xiaomi Mi A1 Guides, News, & Discussion] birarvindersingh:
Do you have unlocked bootloader?
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
Which bands are you using? Are you sure Airtel CA is available in your region? Have you followed the steps correctly?
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
No, i don't have unlocked bootloader
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
Yes, settings will persist even after a factory reset
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
if you can enable diagnostic mode via ussd then it will definitely work
[Xiaomi Mi A1 Guides, News, & Discussion] .:Addicted:.:
Followed steps correctly, but reading value gave me "NV read error: no such directory found"

But write worked & after writing read is ok??

Not sure if Airtel provides CA in my region, will check with jio
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
I think you are reading wrong value.Ensure that you are reading "RFNV LTE B* CA BC CONFIG".Airtel provides CA over B3 and B40 only So, try with either B3+B40 or B40+B40.
[Xiaomi Mi A1 Guides, News, & Discussion] .:Addicted:.:
item no 70977->B3 & item no 71014->B40, right?

When i read for 1st time, it showed me error. After writing its giving right value though.

Also how to make B40+B40? That app doesn't allow to select B40 twice.
[Xiaomi Mi A1 Guides, News, & Discussion] FrozenFlames:
mine not working, there is no option of rf lte under category filter, plz sove this.
[Xiaomi Mi A1 Guides, News, & Discussion] Shobit Joura:
This is normal dont worry. And for airtel use 3+ 40 , there nothing 40 + 40

---------- Post added at 01:32 PM ---------- Previous post was at 01:27 PM ----------

Bro , its seems strange and no one faced this so plzz check if u followed all steps correctly and try flashing stock rom ising fastboot so modem and efs goes back to normal and then try again.
[Xiaomi Mi A1 Guides, News, & Discussion] anshsharma240:
For carrier aggregation on Band 40 (20Mhz) + 40 (10Mhz) simply select band 40 in the "LTE band calculator" app and then write that value in "RFNV LTE B40 CA BC CONFIG". And don't forget to put the Default value "0" in B3 & B5 before trying this. If it still doesn't work then try it with jio sim.
[Xiaomi Mi A1 Guides, News, & Discussion] abhimathore:
bro qxdm is asking for credentials even after installing the crack

pls help!!