4G not working in A1 - Xiaomi Mi 9 Questions & Answers

Hi! 4G isnt working on my Mi9 with A1 network but they use the suported frequencies. I tried reseting APN and some other changes in developer options nothing worked. Any idea?
I'm gona try and flash the ROM when I unlock it from CN to global or EEA. which one should I chose if there is any big difference?

urbyx said:
Hi! 4G isnt working on my Mi9 with A1 network but they use the suported frequencies. I tried reseting APN and some other changes in developer options nothing worked. Any idea?
I'm gona try and flash the ROM when I unlock it from CN to global or EEA. which one should I chose if there is any big difference?
Click to expand...
Click to collapse
Which variant do you have? if it's the alita / explorer / transparent edition (8/256GB or 12/256GB) then there's NO BAND 20, which is LTE for many providers. Have you checked this?
EDIT: see here, perhaps you're in an area that doesn't use band 7 and only band 20? If this is the case... No ROM you flash can alter that, it's hardware related. ONLY global devices (64/128GB) support band 20

reg66 said:
Which variant do you have? if it's the alita / explorer / transparent edition (8/256GB or 12/256GB) then there's NO BAND 20, which is LTE for many providers. Have you checked this?
EDIT: perhaps you're in an area that doesn't use band 7 and only band 20? If this is the case... No ROM you flash can alter that, it's hardware related. ONLY global devices (64/128GB) support band 20
Click to expand...
Click to collapse
I have transparet ediotion 8/256gb. Checked there is no band 20 in my area but 4g works everywhere else
Should I still flash the ROM to global or eea? Can I relock it after or is it gona brick..

urbyx said:
I have transparet ediotion 8/256gb. Checked there is no band 20 in my area but 4g works everywhere else
Should I still flash the ROM to global or eea? Can I relock it after or is it gona brick..
Click to expand...
Click to collapse
Do not relock bootloader after flashing rom, it will most likely brick your device. Flash another ROM if you like but you won't get band 20

May I ask, why do you want to relock bootloader after flashing a new ROM?

Related

LTE Band Question

Hi everyone,
My carrier band is supported on the Mix namely B3 and B7. However, it is not possible to get 4G signal at all on the phone, only 3G.
Any suggestions?
Thanks
Vincent
Leechoonhwee said:
Hi everyone,
My carrier band is supported on the Mix namely B3 and B7. However, it is not possible to get 4G signal at all on the phone, only 3G.
Any suggestions?
Thanks
Vincent
Click to expand...
Click to collapse
Settings/SIM card/preferred network
Or maybe you need to setup APN manually.
jazz452 said:
Settings/SIM card/preferred network
Or maybe you need to setup APN manually.
Click to expand...
Click to collapse
Thanks for the suggestions but I have tried that to no avail. I install the LTE discovery app and there is no LTE signal at all.
I also tried flashing the modem file from China dev rom but it is also the same.
Leechoonhwee said:
Thanks for the suggestions but I have tried that to no avail. I install the LTE discovery app and there is no LTE signal at all.
I also tried flashing the modem file from China dev rom but it is also the same.
Click to expand...
Click to collapse
So your old phone worked ok? Can you try a different carrier SIM card to check.
What carrier are you on and what are your APN settings?
jazz452 said:
So your old phone worked ok? Can you try a different carrier SIM card to check.
Click to expand...
Click to collapse
Old phone is ok
omniphil said:
What carrier are you on and what are your APN settings?
Click to expand...
Click to collapse
I'm in Singapore and my carrier is Starhub. The apn settings are auto created and I double checked against other phone it is the same settings.
There is an issue with the latest update that causes the device not to connect to LTE. According to the official forum, it should be fixed in the next update, which is about a week away.
Edit: Some have suggested reflashing your ROM and doing a factory reset as well. Most of what I have seen points to the developer ROM. If you are using the developer ROM, then flashing back to the Chinese Stable and factory resetting the device should solve it. If you are using a vendor ROM, the same is recommended.
Just an update to anyone facing the same issue. This is a bug on the development rom and hence it affects all eu / custom rom that derive from there. Once flash onto the latest stable will resolve this issue.

Xiaomi Mi Mix LTE/4G connection issue

Hey guys,
I bought an used Mi Mix and can't get LTE te work, band 7 (2600) which is used by my provider and should be supported on the Mix. When i'm in the center of Amsterdam, where i always had LTE with my Redmi note 3, it stays on H+, never ever does it switch to LTE, even if i force it to (xposed module). I changed the tcp/ip to ipv4 in APN settings (and switched between ipv4/ipv6 etc between roaming and normal), notinh helps..
I've read that it is possible to "upgrade" the modem/baseband but I can't find where i read that and/or if it helps. Do you guys have any idea?
I'm at Epic Rom 7.11.2 with twrp and xposed.
Thanks in advance,
Don
tmmr2 said:
Hey guys,
I bought an used Mi Mix and can't get LTE te work, band 7 (2600) which is used by my provider and should be supported on the Mix. When i'm in the center of Amsterdam, where i always had LTE with my Redmi note 3, it stays on H+, never ever does it switch to LTE, even if i force it to (xposed module). I changed the tcp/ip to ipv4 in APN settings (and switched between ipv4/ipv6 etc between roaming and normal), notinh helps..
I've read that it is possible to "upgrade" the modem/baseband but I can't find where i read that and/or if it helps. Do you guys have any idea?
I'm at Epic Rom 7.11.2 with twrp and xposed.
Thanks in advance,
Don
Click to expand...
Click to collapse
Hey. All I learnt about my mix; it doesnt receive the LTE connection when other devices even POS ones get in the same area which sucks.. Welcome to the club.
Sent from my lithium using XDA Labs
Sorry to hijack the thread.
I am having the same problem too, it's on MIUI Gobal 9.1 Stable (NAHMIEI), please let me know what I could do to resolve my issue.
thanks
I fixed it.. I just completely wiped my phone, flashed the official global developer ROM. This fixed the LTE issue. I unlocked bootloader again and reflashed twrp and xiaomi.eu ROM and it's still working.
Sent from my MIX using Tapatalk
Konstantine34 said:
Hey. All I learnt about my mix; it doesnt receive the LTE connection when other devices even POS ones get in the same area which sucks.. Welcome to the club.
Click to expand...
Click to collapse
Need a new SIM mate, this my answer to everything. Can say it's probably ROM related or cernol
It's modem/baseband driver problem. A while back there were some issues with those. Updating or installing EU Tom doesn't update the modem drivers, an official fastboot flashed ROM does..
Some modem drivers (Indian phones I thought) don't support 4g for some reason, only 3g/HSDPA+. Either one can be solved by installing official ROM. Sadly you have to unlock bootloader again etc.
Sent from my MIX using Tapatalk
tmmr2 said:
It's modem/baseband driver problem. A while back there were some issues with those. Updating or installing EU Tom doesn't update the modem drivers, an official fastboot flashed ROM does..
Some modem drivers (Indian phones I thought) don't support 4g for some reason, only 3g/HSDPA+. Either one can be solved by installing official ROM. Sadly you have to unlock bootloader again etc.
Click to expand...
Click to collapse
So which ROM do you recommend, the fastboot ROM I used previously caused the problems in the first place.
That was Oreo fastboot ROM
---------- Post added at 01:20 PM ---------- Previous post was at 12:52 PM ----------
james1089 said:
So which ROM do you recommend, the fastboot ROM I used previously caused the problems in the first place.
That was Oreo fastboot ROM
Click to expand...
Click to collapse
But you don't have to unlock bootloader again as long as you uncheck relocked bootloader, Twrp install again yes
I probably accidentally locked the bootloader..
I used the official ROM from miui . The fastboot developer China ROM I think. http://en.miui.com/download-317.html#460
Sent from my MIX using Tapatalk
tmmr2 said:
I probably accidentally locked the bootloader..
I used the official ROM from miui . The fastboot developer China ROM I think. http://en.miui.com/download-317.html#460
Click to expand...
Click to collapse
Didn't work anyway, still can't receive calls with 4g enabled, wiped the lot, fastboot ROM with miflash. Must be my network has enabled volte and it's screwed my phone up
Ok, sucks.. I can use 4g but only in the big cities. Never had any problems with calling. Tried putting your SIM in slot 2?
Sent from my MIX using Tapatalk

Band 17 support?

So I was about to buy the phone but wanted to verify LTE bands first. The seller lists B17 support, but the Mi9 web page at Xiaomi's site does NOT list band 17 support. I find this strange, since the Mi8 does support B17 and the Mi Mix 3S supports B17. So Is there any real confirmation on whether the Mi 9 does or does not support this LTE band? Is the lack of it being listed at Xiaomi site just a type?
4G LTE FDD:B1/B2/B3/B4/B5/B7/B8/B12/B17
Click to expand...
Click to collapse
4G: FDD LTE B3:1800/B1:2100/B7:2600/B5:850/B8:900/B2/B4:1700/B12/B17
Click to expand...
Click to collapse
https://www.aliexpress.com/item/Xia...agon-855-Octa-Core-6-39-48MP/32974093932.html
https://www.aliexpress.com/item/Xia...9-Snapdragon-855-Octa-Core-6/32976448415.html
and yet:
https://www.mi.com/global/mi9/specs/
4G:LTE FDD: B1/2/3/4/5/7/8/12/20/28
Click to expand...
Click to collapse
EDIT: ok, so the internation page and version of the phone does not mention B17 support. However the Chinese page DOES list B17 support on their model:
https://www.mi.com/mi9/specs/
4G:LTE FDD:B1/B2/B3/B4/B5/B7/B8/B12/B17
Click to expand...
Click to collapse
So does that mean only Chinese versions support this and I must buy Chinese version and run Chinese ROM to get band 17 support to work with ATT? I would rather flash to Global ROM, but I am thinking that Global kernel or other firmware may remove B17 support? Can the Global ROM be run on China firmware? They do say China ROM support English....
EniGmA1987 said:
So does that mean only Chinese versions support this and I must buy Chinese version and run Chinese ROM to get band 17 support to work with ATT? I would rather flash to Global ROM, but I am thinking that Global kernel or other firmware may remove B17 support? Can the Global ROM be run on China firmware? They do say China ROM support English....
Click to expand...
Click to collapse
I'd definitely trust Xiaomi's official site more than anywhere else, if you check Xiaomi's official site for Spain (which sells the Global variant) it doesn't list band 17..
Flashing Global on a Chinese device or vice versa doesn't affect the bands as far as I'm aware, there's evidence of Xiaomi hardware locking the bands on the Pocophone, forum links below:
https://forum.xda-developers.com/poco-f1/help/poco-f1-lte-bands-unlock-t3835467
https://forum.xda-developers.com/poco-f1/how-to/pocophone-lte-band-unlock-report-t3848193
If you buy a Chinese Mi 9 then you should be able to flash the Global ROM, same as all previous Xiaomi's, however you have to keep the bootloader unlocked once flashed, trying to relock will result in a brick
These steps were for a MI Note, but may work with the MI 9:
https://forum.xda-developers.com/redmi-note/general/unlock-lte-bands-step-step-xiaomi-mi-t3084774
TheInfiniteAndroid said:
I'd definitely trust Xiaomi's official site more than anywhere else, if you check Xiaomi's official site for Spain (which sells the Global variant) it doesn't list band 17..
Flashing Global on a Chinese device or vice versa doesn't affect the bands as far as I'm aware, there's evidence of Xiaomi hardware locking the bands on the Pocophone, forum links below:
https://forum.xda-developers.com/poco-f1/help/poco-f1-lte-bands-unlock-t3835467
https://forum.xda-developers.com/poco-f1/how-to/pocophone-lte-band-unlock-report-t3848193
If you buy a Chinese Mi 9 then you should be able to flash the Global ROM, same as all previous Xiaomi's, however you have to keep the bootloader unlocked once flashed, trying to relock will result in a brick
Click to expand...
Click to collapse
TheInfiniteAndroid said:
I'd definitely trust Xiaomi's official site more than anywhere else, if you check Xiaomi's official site for Spain (which sells the Global variant) it doesn't list band 17..
Flashing Global on a Chinese device or vice versa doesn't affect the bands as far as I'm aware, there's evidence of Xiaomi hardware locking the bands on the Pocophone, forum links below:
https://forum.xda-developers.com/poco-f1/help/poco-f1-lte-bands-unlock-t3835467
https://forum.xda-developers.com/poco-f1/how-to/pocophone-lte-band-unlock-report-t3848193
If you buy a Chinese Mi 9 then you should be able to flash the Global ROM, same as all previous Xiaomi's, however you have to keep the bootloader unlocked once flashed, trying to relock will result in a brick
Click to expand...
Click to collapse
Thanks for the reply. I ended up buying the chinese version phone just now since that is the one Xiaomi says supports the bands I need. I will work on it when I get the phone in and verify whether I can unlock and install global ROM and still have the bands :good:
Thank you for your help
EniGmA1987 said:
Thanks for the reply. I ended up buying the chinese version phone just now since that is the one Xiaomi says supports the bands I need. I will work on it when I get the phone in and verify whether I can unlock and install global ROM and still have the bands :good:
Thank you for your help
Click to expand...
Click to collapse
Be sure to report back man, good luck, & glad I could help!
EniGmA1987 said:
Thanks for the reply. I ended up buying the chinese version phone just now since that is the one Xiaomi says supports the bands I need. I will work on it when I get the phone in and verify whether I can unlock and install global ROM and still have the bands :good:
Thank you for your help
Click to expand...
Click to collapse
I also ordered the Chinese version because it has 4 LTE bands for T-Mobile
Amy news guys about thé bands on the chinese version ans installing thé global rom ?
kira-senpai said:
Amy news guys about thé bands on the chinese version ans installing thé global rom ?
Click to expand...
Click to collapse
The Chinese version has the proper USA LTE Bands. It doesn't have band 20 for Europe
jvs60 said:
The Chinese version has the proper USA LTE Bands. It doesn't have band 20 for Europe
Click to expand...
Click to collapse
Where do you buy Chinese version from?
StDevious said:
Where do you buy Chinese version from?
Click to expand...
Click to collapse
TradingShenzhen, AliExpress, Banggod.
Myself and a few others have had very good service through TradingShenzhen.
Is there a global version ith 8Gb of RAM ?
kira-senpai said:
Is there a global version ith 8Gb of RAM ?
Click to expand...
Click to collapse
No
I'm seeing some contrary information out there about what phone has what bands. Is there a code I can enter in dialer to see all available bands on my device? All I see is that I'm currently connected with B2 in *#*#4636#*#* and various apps I've picked up. I'm wanting to see exactly what's available in the device in my hand rather than specs on 4 different websites(with different values). The primary website I'm looking at is showing me I made a mistake with getting the 8/256 transparent china rather than the 12/256 but I'd really like to know for sure(especially since I'm currently not experiencing any problems with AT&T). It was easy with my W10M phone(##2382#) but I'm a bit lost with Android.
Unfortunately for me it didn't work. Like I said, 4G + appears on my phone screen, but the apps don't connect and I can't even use the browser because it says I'm not connected. Already tried to fix APN settings, checked if I had LTE on, but nothing worked. The internet only works if I have H+ on the screen. And now I have another problem: I downloaded my original parameters before switching to the modified ones, but now when resetting my original parameters and restarting, the phone remains without a network signal. The IMEI numbers are correct, the settings are ok, but I still have no network signal. Does anyone know how to fix this, or have the original .xqcn file to send me? Thanks.
fafuzito said:
Unfortunately for me it didn't work. Like I said, 4G + appears on my phone screen, but the apps don't connect and I can't even use the browser because it says I'm not connected. Already tried to fix APN settings, checked if I had LTE on, but nothing worked. The internet only works if I have H+ on the screen. And now I have another problem: I downloaded my original parameters before switching to the modified ones, but now when resetting my original parameters and restarting, the phone remains without a network signal. The IMEI numbers are correct, the settings are ok, but I still have no network signal. Does anyone know how to fix this, or have the original .xqcn file to send me? Thanks.
Click to expand...
Click to collapse
are you posting in the wrong thread? there are no instructions in this thread.

Carrier Aggregation ( 4g+/ Lte+)

Hey guys,
Anyone tried flashing xiaomi EEA rom or EEA modem on other devices ( raphaelin, raphael, etc), as the EEA rom supports more of the bands required for carrier aggregation (CA) ?, we will definitely see a bump in network speeds, as the current ones aren't upto the mark, xiaomi cheaped out on CA, not buying licenses from Qualcomm. So i guess, this is worth a shot, I understand that EEA isn't updated as frequently, but still?
Thanks
The ROM has nothing to do with what bands are supported. Flashing a different ROM will not enable or disable any bands
Bands are dependant on the modem which is only editable through a specific qualcomm tool
As far as I know still 855 SoC is not supported in this tool
It is not a file you can flash through fastboot or recovery
lordkiller347 said:
The ROM has nothing to do with what bands are supported. Flashing a different ROM will not enable or disable any bands
Click to expand...
Click to collapse
shouk_1987 said:
Bands are dependant on the modem which is only editable through a specific qualcomm tool
As far as I know still 855 SoC is not supported in this tool
It is not a file you can flash through fastboot or recovery
Click to expand...
Click to collapse
Not bands guys, i was talking about ca, which we can enable via tool "Qxdm", but as said above, it doesn't support sd855 yet . Maybe flashing EEA modem will get us carrier aggregation? ?
Am NoobMaster69 said:
Not bands guys, i was talking about ca, which we can enable via tool "Qxdm", but as said above, it doesn't support sd855 yet . Maybe flashing EEA modem will get us carrier aggregation? ?
Click to expand...
Click to collapse
This is the same tool that had been used to enable bands. It does it by modifying the nvram but the modem on the K20 Pro is locked so the nvram cannot be modified. There is already a similar tool that supports the SD855 but it doesn't work on the K20 Pro because of its locked modem

Guide how to unlock bands and 5G on 700mhz

Hello. 5G network is comming soon . I make today method for unlock 5G on 700mhz for this device . Problematic is only icon od network because 5G network is visible as 4G (have only 4G icon , but work in 5G mode , speedtest say the same) . Unlock method to avalaible soon , and publish in this thread . This method unlock all bands supported by device . Avalaible info about device is on frequencycheck.com with all bands . Unlocked all bands is visible on screenshot's in atach . What do you think about 5G on this device ???? Unlock 5G working only in european region devices and global . Devices from other regions have only unlocked new bands , I don't test this method on devices from other regions .
What you need to do that:
1.Any Qualcomm device - with this guide you unlock only Qualcomm cpu devices
2.NV values
3.QPST and QXDM for edit values
4.Installed lineageos with magisk
5.Network guru app for enable new bands after correct programing
6.ADB and FASTBOOT - with drivers to device too
7.Minimum 1 hour for do that
OK. Let's go:
Download drivers and flash lineageos with twrp - you need to install magisk and lineageos - Method for unlock don't work with stock miui .
Install drivers and turn on developer settings in your device and check 3 adb options for correct set all .
If you have magisk and lineagos , you can start adb and write command adb shell , in shell you need to write and press enter this command setprop sys.usb.config diag .
Start QPST and add port
Start QXDM , and find nv values (look down)
Change values and press write - do the same for second sim card (look up on qxdm and check dual sim , set this values for 0 and 1 if no possible you brick your device without option recovery signal. Write values to 0 and 1 after write press read and check . Do that with all values . Make copy of your values to notepad txt file for your safety . Reboot device , install network signal guru and lock all bands in 2G,3G,CDMA,4G . Device find 5G network on 700mhz as ''4G'' network because radio don't have icon and name for 5G .
More info and know how soon if i find some time for do that.
NV values:
0441: 0x780
0946: 0x0FF8
1877: 3460734838925428608
2954: 268894208
6828: 17591112253439
6829: 17591112253439
For enable total all bands in this device or other device with qualcomm cpu you must enter this values:
NV values:
0441: 0xFFFF
0946: 0xFFFF
1877: 18446744073709551615
2954: 4294967295
Values for LTE is not changed (LTE 6828 and 6829)
6828: 17591112253439
6829: 17591112253439
This values working on all rooted devices with qualcomm cpu inside with all wariants of cpu. If you want to share or publish this values write to me pm.
IMPORTANT: You must disable unused bands in EU if you are in EU in this app by uncheck in lock bands option CDMA frequencies . If you don't do that , your device to be scan all bands next five minutes than find signal !! If you are in other country , you can find in google frequencies used in your country and enable it only .
If you use my guide please press thanks
reserved
Tweaked system and unlocked radio give better speed of internet.
Why aren't you posting this?
DebrupGhosh said:
Why aren't you posting this?
Click to expand...
Click to collapse
1.Mod move my thread here , from software development
2.I make test's with radio and calculations - possibly I unlock to 5G for 3,5Ghz+ if documentation of soc allow me for do that
3.I makeing know/how for users with instruction how to unlock radio
4.I make patched lineageos based on last available (look up) , with deodex for next unlocking
5.I need testers listen to me how to do all step by step , because one mistake, one point not do and you have hard brick radio and phone without signal ... i must end my work , users must have lineageos for correct unlock because magisk with stock rom not working and device don't have su libaries and busybox needed for unlock . Users and you bro must wait not too long . Say me what is your contry , i need to check bands for lte in your country and what is your model - I have from -EG series (backside phone have model) ????
MAREK10747 said:
1.Mod move my thread here , from software development
2.I make test's with radio and calculations - possibly I unlock to 5G for 3,5Ghz+ if documentation of soc allow me for do that
3.I makeing know/how for users with instruction how to unlock radio
4.I make patched lineageos based on last available (look up) , with deodex for next unlocking
5.I need testers listen to me how to do all step by step , because one mistake, one point not do and you have hard brick radio and phone without signal ... i must end my work , users must have lineageos for correct unlock because magisk with stock rom not working and device don't have su libaries and busybox needed for unlock . Users and you bro must wait not too long . Say me what is your contry , i need to check bands for lte in your country and what is your model - I have from -EG series (backside phone have model) ????
Click to expand...
Click to collapse
From india, I've EI series
DebrupGhosh said:
From india, I've EI series
Click to expand...
Click to collapse
Your device is fully support all bands in your country . https://www.frequencycheck.com/compatibility/05AZu0k/xiaomi-redmi-7a-dual-sim-td-lte-in-32gb-m1903c3ei-mzb7989in-mzb7800in-mzb8008in-xiaomi-pine/india .
Unlock bands for you don't do for you to much . But if you want to have option select band for faster internet do somthing for you . You need to install lineageos and to lineageos magisk and app guru network from play store .After unlock bands you find in network guru extra bands . You can try to check what what's band after select to be faster for you .
Soo... After update unlocked is all bands avalaible for this CPU . Actually soon I publish how to unlock all bands + 5Ghz Wi-Fi mode . All bands working correct.
MAREK10747 said:
Your device is fully support all bands in your country . https://www.frequencycheck.com/compatibility/05AZu0k/xiaomi-redmi-7a-dual-sim-td-lte-in-32gb-m1903c3ei-mzb7989in-mzb7800in-mzb8008in-xiaomi-pine/india .
Unlock bands for you don't do for you to much . But if you want to have option select band for faster internet do somthing for you . You need to install lineageos and to lineageos magisk and app guru network from play store .After unlock bands you find in network guru extra bands . You can try to check what what's band after select to be faster for you .
Click to expand...
Click to collapse
Can you enable carrier aggregation in this mobile???
And by 5g you meant 5ghz wifi or 5g mobile network? If it's 5g mobile network unlock then may i use your guide?
---------- Post added at 03:24 AM ---------- Previous post was at 03:19 AM ----------
MAREK10747 said:
Your device is fully support all bands in your country . https://www.frequencycheck.com/compatibility/05AZu0k/xiaomi-redmi-7a-dual-sim-td-lte-in-32gb-m1903c3ei-mzb7989in-mzb7800in-mzb8008in-xiaomi-pine/india .
Unlock bands for you don't do for you to much . But if you want to have option select band for faster internet do somthing for you . You need to install lineageos and to lineageos magisk and app guru network from play store .After unlock bands you find in network guru extra bands . You can try to check what what's band after select to be faster for you .
Click to expand...
Click to collapse
Did you say unlock bands won't be of much help to me because my device has all indian bands and 5g is yet unavailable in india?
DebrupGhosh said:
Can you enable carrier aggregation in this mobile???
And by 5g you meant 5ghz wifi or 5g mobile network? If it's 5g mobile network unlock then may i use your guide?
Did you say unlock bands won't be of much help to me because my device has all indian bands and 5g is yet unavailable in india?
Click to expand...
Click to collapse
On my device after little ''re-work'' agregation working , but i testing now it . Working stable .
5G network on 700mhz , but 700mhz working only in EU and maybe in US . 5 GHZ wifi , i plan to enable because CPU support that . I don't know why wifi on 5Ghz is disable , but I enable it later .
In india 5G network working , but i'm not sure band .
MAREK10747 said:
On my device after little ''re-work'' agregation working , but i testing now it . Working stable .
5G network on 700mhz , but 700mhz working only in EU and maybe in US . 5 GHZ wifi , i plan to enable because CPU support that . I don't know why wifi on 5Ghz is disable , but I enable it later .
In india 5G network working , but i'm not sure band .
Click to expand...
Click to collapse
How to activate carrier aggregation?
DebrupGhosh said:
How to activate carrier aggregation?
Click to expand...
Click to collapse
First try to use lineageos + network guru app and unlock all bands to values from second values and reboot . In guru app disable all cdma bands , activate all wcdma , gsm , lte and reboot . This possbile activate it automaticly , if not add comment .
Big thanks for that, I didn't know that is possible. Here in Germany we have Band 28 (700 MHz) for LTE (But also for 5G). Will it also be activated when I follow your instructions, or only for 5G? LTE B32 (1500 MHz) would be good too. Could you name the values for it? Or a guide on how to find them out?
xuxu1 said:
Big thanks for that, I didn't know that is possible. Here in Germany we have Band 28 (700 MHz) for LTE (But also for 5G). Will it also be activated when I follow your instructions, or only for 5G? LTE B32 (1500 MHz) would be good too. Could you name the values for it? Or a guide on how to find them out?
Click to expand...
Click to collapse
Soo... Possbile you activate 2 bands 4G and 5G for 700mhz . You need only lineageos because i'm not sure how it working in stock rom . First published values unlock all bands of LTE and 5G too . For correct working please install network app guru , gapps
if you need , magisk for correct working of network guru app and lock bands all after unlock and reboot . If you after reboot lock in app all bands of lte you activate too 5G working . You can see in app band actually working , 700mhz working correct after unlock . I waiting for 700mhz in Poland because we don't have this band but i test in germany 700mhz (travel to germany in moment of tests 700mhz ) . Soon i Publish fixed lineageos for 5G and 4G network speed . My result of speed test in Poland after patch system and modem is actually : https://www.speedtest.net/my-result/a/6179268278 In Germany your speed test result can be faster than I have in Poland. You decide what you want to do with your device . 50% of unlocked bands for this device is here: https://www.frequencycheck.com/mode...al-dual-sim-td-lte-32gb-m1903c3eg-xiaomi-pine
MAREK10747 said:
First try to use lineageos + network guru app and unlock all bands to values from second values and reboot . In guru app disable all cdma bands , activate all wcdma , gsm , lte and reboot . This possbile activate it automaticly , if not add comment .
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I can disable lte band but there is no option to disable cdma bands in network signal guru app
DebrupGhosh said:
I can disable lte band but there is no option to disable cdma bands in network signal guru app
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give me screen shots
(deleted)
MAREK10747 said:
give me screen shots
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See
DebrupGhosh said:
See
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ok. possible is ok . Give next screen shot form LTE .
MAREK10747 said:
ok. possible is ok . Give next screen shot form LTE .
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Lte

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