Redmi 3s With Lte B20 800mhz


Tobee

Members
Sep 8, 2015
35
20
I don't know how they did it but it works. A guy in the german Chinamobile forum confirmed it with a R3s from **********. The phone has an independent modelnumber and a different box.
 

Tetzi

Members
Jan 5, 2016
160
40
Yes i know, i read this thread.
But no official statement from xiaomi.
 
Last edited:

woutur

Members
Nov 8, 2013
66
20
As dat as I know there is a special version for the Taiwanese Market that supports band 20. But those are hard to come by.
 

sota01

Members
Jul 23, 2016
161
40
And keep in mind if it has different kernel or ROM, than official global or xiaomi.eu ROMs won't work (can brick device) or at least you'll lost B20 support after any update!
We all have hardware for B20, it's just not enabled in xiaomi KERNEL, so even unofficial ROM can't give you B20 support, and I doubt a custom kernel will be out soon...
 

sota01

Members
Jul 23, 2016
161
40
I bet this "Taiwaneese" models come with some moddified version of official ROM...

I bought Int. version, don't know if it had B20 support, cause I immediately updated it with .eu weekly, and now it doesn't have B20.
 

snatt

Members
Jan 8, 2016
5
11
Hi,

So if I order that Taïwan version with B20, i'm stuck with the seller rom ? There is no global or dev rom for this version?
 

sota01

Members
Jul 23, 2016
161
40
Ask developer of the xiaomi.eu ROM...
Don't take my word for granted... just my experiance... also possible mine didn't have B20 from the start...

I get good enough speeds on 3G (4-7 Mb/s), at home and office I have broadband Wifi, also in all major cities my internet/mobile provider has free WIFI spots...
So i don't care for the moment about B20 support.
 

Tetzi

Members
Jan 5, 2016
160
40
This version of redmi 3s comes with official miui globle rom(with ota) , but there is no other device as land.

Very confusing
 

Tobee

Members
Sep 8, 2015
35
20
The standard 3s is 2016030 the B20 version is 2016031. This is easy to determine from the phone box. But it could be that the version is modified too.
 
Last edited:

Tobee

Members
Sep 8, 2015
35
20
I refered to the versions sold by **********. It might be, that the 2016031 version can be modified to work with B20. Since i have not seen this from others then ********** it's possible its not official Xiaomi.
 

snatt

Members
Jan 8, 2016
5
11
Here is the informations found in a redmi 3s with b20 ( somebody who buy it posted this on a french website )

http://www. hostingpics. net/viewer.php?id=273920IMG20160905220610. jpg ( remove spaces )

Is it the same informations than the "classic" 3s without B20 ?

If yes, it means that the same ROM can go on both and it will explain why there is no specific ROM released for this 3s b20 like for the Rn3 Special edition.
 

haris Pao

Members
Oct 10, 2014
19
15
I just bought two of them both 16gb 2gb rom.
Nothing chineese inside google apps preinstalled,english manual,eu charger.
Both phones came with stable rom.
It was easy to install dev rom and have multilanguage too.
Phones were from ********** and came to me SEALED and untouched...
I beleive there is band 20 inside because both of them are for guys who need this band
otherwise they dont have 4g.
Both of them told me 4g was perfect.
 

snatt

Members
Jan 8, 2016
5
11
Hi, thanks for your feedback,

So you buy the international version b20 from **********?

**********.com/item/-HK-Stock--Official-International-Version--XIAOMI-Redmi-3S-5-0inch-HD-4G-LTE-MIUI-7-Smartphone-Qualcomm-Snapdragon-430-Octa-Core-2GB-16GB-13-0MP-Touch-ID-Fast-Charge-4100mAh---Gold-370961. html


You flashed without problem the normal 3s dev Rom on the b20 3s and the 4g is still ok after that ?

Good news !
 

shiaido

Members
Aug 26, 2016
6
13
I was (theoretically) able to unlock Band 20 with QualcommTool.exe according to the Info on xda-developers.

First put phone in Diag mode: In the shell input as Admin:
adb devices
adb shell
su
setprop sys.usb.config diag,adb

then

-> run QualcommTool.exe as Admin

-> with right mouseclick first activate an then connect the diag-com port

-> click the tab "bands" then the subtab "LTE"

-> (1) "Read" with activated "LTE BC Config #6828" -the one without "DIV" (I had to do it twice till it worked)

-> then click the selected band you want to add

-> (2) write

-> click LTE BC Config DIV #6829

-> (3) read

-> then click the selected band you want to add

-> (4) write

goto (1) and repeat till (4)
about 3 times, because the settings were not saved, when done only once or twice.
The last steps were in my cases step (1) and (2).
When i read "LTE BC Config #6828" the 3rd time, it was saved.
Then reboot.
LTE Bands are after checking with QualcommTool saved, but i wasn't in a Band20 area till now, to check it practically.
Maybe some of you can test it.
 
Aug 11, 2016
29
15
I was (theoretically) able to unlock Band 20 with QualcommTool.exe according to the Info on xda-developers.

First put phone in Diag mode: In the shell input as Admin:
adb devices
adb shell
su
setprop sys.usb.config diag,adb

then

-> run QualcommTool.exe as Admin

-> with right mouseclick first activate an then connect the diag-com port

-> click the tab "bands" then the subtab "LTE"

-> (1) "Read" with activated "LTE BC Config #6828" -the one without "DIV" (I had to do it twice till it worked)

-> then click the selected band you want to add

-> (2) write

-> click LTE BC Config DIV #6829

-> (3) read

-> then click the selected band you want to add

-> (4) write

goto (1) and repeat till (4)
about 3 times, because the settings were not saved, when done only once or twice.
The last steps were in my cases step (1) and (2).
When i read "LTE BC Config #6828" the 3rd time, it was saved.
Then reboot.
LTE Bands are after checking with QualcommTool saved, but i wasn't in a Band20 area till now, to check it practically.
Maybe some of you can test it.
Which what phone? Only with de international? O i can tray with the 3s with "not" lte?

Enviado desde mi Redmi 3S mediante Tapatalk
 

shiaido

Members
Aug 26, 2016
6
13
I did it successfully with one Redmi3s and one Redmi3sPrime who had LTE, but Band 20 (like several other bands) was deactivated. I don't think there is a Redmi3s without LTE but maybe only the bands of your area were deactivated, so it seems like no LTE.
Forgot to write: Both are unlocked and rooted.
 
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deepknight

Members
Sep 11, 2016
28
15
I was (theoretically) able to unlock Band 20 with QualcommTool.exe according to the Info on xda-developers.

First put phone in Diag mode: In the shell input as Admin:
adb devices
adb shell
su
setprop sys.usb.config diag,adb

then

-> run QualcommTool.exe as Admin

-> with right mouseclick first activate an then connect the diag-com port

-> click the tab "bands" then the subtab "LTE"

-> (1) "Read" with activated "LTE BC Config #6828" -the one without "DIV" (I had to do it twice till it worked)

-> then click the selected band you want to add

-> (2) write

-> click LTE BC Config DIV #6829

-> (3) read

-> then click the selected band you want to add

-> (4) write

goto (1) and repeat till (4)
about 3 times, because the settings were not saved, when done only once or twice.
The last steps were in my cases step (1) and (2).
When i read "LTE BC Config #6828" the 3rd time, it was saved.
Then reboot.
LTE Bands are after checking with QualcommTool saved, but i wasn't in a Band20 area till now, to check it practically.
Maybe some of you can test it.
I would like to try it, but i cannot find the QualcommTool.EXE on XDA or here. Do you have a download link ?
 

shiaido

Members
Aug 26, 2016
6
13
Sorry, I don't know the link i downloaded it anymore, but with google i fount http://cdmatool.com/download . The package is named Setup_DFS_Studio_16.08.25.0.zip, there is an .exe in it and after you install the QualcommTool.exe can then be found in the installed Folder. And it worked only in an "original" windows7 installation, as i am normally using only linux i tried it in a virtual machine with no success.
And btw: the adb i use is from the FLASHER TOOLKIT LAND (which you use for installing twrp), other adb variants i used for my former sonyz1 didn' work.
 
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shiaido

Members
Aug 26, 2016
6
13
You don' need any account (except one at xiaomi for unlocking your phone). If you mean QualcommTool: just close this loginwindow.