Guide: Enabling LTE Bands

[meandrey]

Hi,

Have anyone tried to unlock/add band 38 (TDD, 2600) on H815 / H815T?

Thank you,
Andrei

 

[Brobro1]

Is it possible to enable LTE Band 20 (800 MHz) on H818N or any Dual SIM LG V10?

Is it possible to enable LTE Band 20 (800 MHz) on H818N or any Dual SIM LG V10?

 

[vkky_]

Note: The title of this guide is Enabling LTE bands, but actually, it's for LTE and for HSDPA bands.

This is something near and dear to me, as I travel the world somewhat and really prefer to have only one phone.

I spent all day figuring out how to add more LTE bands to this phone (I have a bootloader unlocked H815, European version, so please understand that it may not work with other versions, and simply can't even be attempted until you can root it.)

The model I own comes with the following bands:
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100
4G bands LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 20(800), 28(700)

I noticed, however, in the hidden testing menu (277634#*#, Field Test, Modem Settings, Network Mode), the following extra bands, none of which worked:
WCDMA 800, WCDMA AWS (1700/2100)
Along with the following extra LTE bands(277634#*#, Field Test, Modem Settings, LTE Band Selection), again, none of which worked:
Band 12, 13, 25, 29, 40

The result?
Having enabled all of the LTE bands available in the testing menu, I was able to add WCDMA 800 and AWS bands, along with LTE band 40. Unfortunately at this time, Bands 12, 13, 25, and 29 do not work, even if enabled. However, a T-Mobile radio file might help for band 12 if it's a radio issue, or it could be a hardware difference in which case there's nothing we can do. I really don't know until I can test with it. I'm happy about the extra bands, though, because in the US I use T-Mobile, so AWS helps, and in Japan, band 800 is used. Maybe I'll use 40 if I go to China some time.

So how to actually do this?

Step 1: Unlock bootloader and root. You can find out how to do that in other threads.
Step 2: Install the LG USB Drivers. It comes with the LG PC Software.
Step 3: Download CDMAtool from here: http://cdmatool.com/ A free trial works fine for this.
Step 4: Make sure you have adb, and connect your G4 to your PC. In an adb shell, execute the following:
su
echo 1 > /sys/devices/platform/lg_diag_cmd/diag_enable

Step 5: Unplug and re-plug your USB cable. Your phone is now in diag mode (although you wouldn't know any better because you don't get any special device names in Device Manager.)
Step 6: Open DFS which you downloaded from CDMAtool.com Deal with making an account, etc. as you have to get into the software. Close the account window and the actual software will launch.
Step 7: Double click your device to put a checkmark by it in DFS.
Step 8: Click the Band tab. Choose RF BC Config at the bottom. Then, choose read.
Step 9: Make sure your bands are displayed. Check the extra bands you want to add. I recommend against enabling bands other than those mentioned in this thread, but you can try at your own risk (in fact, I'd be interested to see if any work!)
Step 10: Click Write.
Step 11: Click the LTE tab. Click Read. Check the bands you want to add, click write. Then, choose LTE BC Config DIV LTE #6829 at the bottom and repeat the process again there.
Step 12: Sometimes the write doesn't go through, and I have no idea why, but I found it helps to play with your phone for five minutes after writing. Also, I found that even if you're not changing bands, it's somehow necessary to flash HSDPA and LTE bands both in one go before restarting the phone. Otherwise strange things happened like losing bands. I was able to get them back though by re-flashing.
Step 13: Reboot your phone and pray.
Step 14: Go into the hidden menu and test the new bands. If they work, you will see SUCCESS when you press them in the test menu. (277634#*#, Field Test, Modem Settings, Network Mode/LTE Band Selection)

I hope this is useful to any other globetrotters!

Can u tell me LTE Band 3 NV value same in LG G2 AT&T?
As this method is working on SAMSUNG, HTC, MOTOROLA, AND other brands
I want to unlock LTE band 3 please reply me

 

[vkky_]

So, I just tried unlocking a couple of bands on my H815 EUR
cdma tool is able to read the bands fine, but if I try to write, the program just dies, with a generic Windows error message saying it "stopped working".
In the log window I see it says "skipped" for the two "write" steps that were there.
This is with version 15.10.23.0

This is exactly what the log window says (including the spelling error "daignostic"):

Load Account Info                   Error:Bad Data
LGE Mobile USB Serial Port (COM7)   device offline
LGE Mobile USB Serial Port (COM7)   Opened
LGE Mobile USB Serial Port (COM7)   device in daignostic mode
Write NV Item (BAND_PREF)           OK
Write NV Item (BAND_PREF_32_63)     OK
Write NV Item (BAND_PREF_16_31)     OK
Write NV Item (RF_BC_CONFIG)        OK
Switching OfflineD                  OK
Write NV Items Range                Operation Started.Please wait until completed...
Write NV Item (BAND_PREF)           Skipped
Write NV Items Range                Operation Completed
Switching OfflineD                  OK
Write NV Items Range                Operation Started.Please wait until completed...
Write NV Item (BAND_PREF_16_31)     Skipped

same error i want to unlock band 3 and 9...

 

[zyklotrop88]

Is it possible to enable LTE Band 20 (800 MHz) on H818N or any Dual SIM LG V10?

This would be my question, too. H 818 N
V20d-HKG-XX

 

[Brobro1]

same error i want to unlock band 3 and 9...

Root your phone, get this app in your phone, run it in your phone, type this into the app:

su
echo 1 > /sys/devices/platform/lg_diag_cmd/diag_enable

proceed to enable bands!

 

[Awesomeslayerg]

Can i use this to enable the T-mobile LTE bands on the ls 991

 

[emjenny]

Thanks for the tip. It's Great

 

[omecoatl]

Es funcional para OP2?

 

[muhhhh]

@Brobro1
@zyklotrop88

I tried to unlock Band 20 (800 MHz) on H818N (V20d). No success.
Write was successful. When I re-read the LTE values after reboot with DFS, Band 20 is enabled, but I don't get a connection (Vodafone Germany).

If you want to try it yourself: On Marshmallow you have to use *#546368#*818# for the hidden menu (Thanks to some Russian forum: http://forum.androidbg.com/showthread.php?tid=79632 )
Strange: At "LTE Band Selection" I get "FAILED" on every band.

 

[Brobro1]

@Brobro1
@zyklotrop88

I tried to unlock Band 20 (800 MHz) on H818N (V20d). No success.
Write was successful. When I re-read the LTE values after reboot with DFS, Band 20 is enabled, but I don't get a connection (Vodafone Germany).

If you want to try it yourself: On Marshmallow you have to use *#546368#*818# for the hidden menu (Thanks to some Russian forum: http://forum.androidbg.com/showthread.php?tid=79632 )
Strange: At "LTE Band Selection" I get "FAILED" on every band.

Are you rooted?

 

[muhhhh]

Are you rooted?

Nope... There's no root for Marshmallow and H818 (looked bootloader), but you don't need root for this through the hidden menu.

 

[rahlquist]

the EUR H815 hardware is also capable of band 12.. but due to "politics" it is disabled in the modem.. so even with software edits it's blocked.

You wouldn't happen to have any more detail than that would you? Is it modem, OS, something more low level etc?

 

[alialexali]

Is it possible to enable LTE Band 20 (800 MHz) on H818P?
ROOTED
i try the process , connected but could not enable

 

[fedez]

Hello someone has tested it on Moto G 3rd 2015 XT1541?
I need to unlock or add the band 4 (1700/2100)
Any information is appreciated

 

[CrazyLegenD]

Can i use this to enable the T-mobile LTE bands on the ls 991

Yes but no root for marshmallow yet
You can access hidden menu by typing
*#546368#*991#

When i try to enable LTE band it says fail all the time, but i need root for that device, since i am in Europe and it is US version

 

[phez]

This would be my question, too. H 818 N
V20d-HKG-XX

Any luck with this? I would like to buy the H818N for dual LTE SIM capability, but need USA Frequency for T-Mobile & ATT.
Is anyone using the LG Dual H818N in the USA with LTE?
Thanks

 

[mkiller88]

Dose it have Band 38?

 

[vespin]

Is there a way to enable Band 4 on H818P?

Thank you in advance!

 

[sunilromy]

Is there a way to enable Band 4 on H818P?

Thank you in advance!

ok ... i wil l try to help. do you have qxdm? qpst ?

---------- Post added at 08:18 PM ---------- Previous post was at 07:49 PM ----------

i am doing some testing on lg g4 band enabling for those g4 where 4g isnt working even after enabling it. i need qcn file from international variant or any lg g4 other then ls990.. ??

those who cant enable band by dfs, try qxdm..