Develop Bugs

[Q] LG G3 D855 LTE issue problem in UK

Hello
I have just got a LG G3 D855 from Asia. and the item can't find the LTE network. only work on WCDMA & GSM. any one have that problem and how can fix it
Lun

lunlun99 said:
Hello
I have just got a LG G3 D855 from Asia. and the item can't find the LTE network. only work on WCDMA & GSM. any one have that problem and how can fix it
Lun
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Click to collapse
You probably have the wrong band version i maybe wrong

jaythenut said:
You probably have the wrong band version i maybe wrong
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Click to collapse
the box mention phone supporting LTE 700/800/900/1800/2100/2300/2600. it isn't wrong band version.

lunlun99 said:
the box mention phone supporting LTE 700/800/900/1800/2100/2300/2600. it isn't wrong band version.
Click to expand...
Click to collapse
That's strange then maybe put this in the dialer 3845#*855# and see if it is activated

jaythenut said:
That's strange then maybe put this in the dialer 3845#*855# and see if it is activated
Click to expand...
Click to collapse
what's activated mean ?

jaythenut said:
That's strange then maybe put this in the dialer 3845#*855# and see if it is activated
Click to expand...
Click to collapse
what's activated mean ? and it's show up Connection problem or invalid MMI code

lunlun99 said:
what's activated mean ?
Click to expand...
Click to collapse
If you have 4G it will say under band i think
And you do have 4G contract with your carrier

Yes. the SIM work my other phone in LTE network
jaythenut said:
If you have 4G it will say under band i think
And you do have 4G contract with your carrier
Click to expand...
Click to collapse

I'm having the same problem with Three UK, no 4G. Although 4G worked on my Lumia 1020 with the same SIM a few days ago.
If I go into the hidden menu under LTE you can set it to use LTE and it connects to 4G brefiely then goes back to 3G and it never shows GSM/ WCDMA / LTE auto in the mobile networks menu, just GSm / WCDMA auto.
I noticed on the demo unit in a Three store that the phones software version was V10a-EUR-XX whereas mine is V10g-HKG-XX.

lewisco said:
I'm having the same problem with Three UK, no 4G. Although 4G worked on my Lumia 1020 with the same SIM a few days ago.
If I go into the hidden menu under LTE you can set it to use LTE and it connects to 4G brefiely then goes back to 3G and it never shows GSM/ WCDMA / LTE auto in the mobile networks menu, just GSm / WCDMA auto.
I noticed on the demo unit in a Three store that the phones software version was V10a-EUR-XX whereas mine is V10g-HKG-XX.
Click to expand...
Click to collapse
if you have root you can try deleting (or renaming) LTE Config.apk from /system/app

Lennyuk said:
if you have root you can try deleting (or renaming) LTE Config.apk from /system/app
Click to expand...
Click to collapse
Is there anything that can be done without root? I've tried setting the LTE in the hidden services menu and it connects foe a few seconds and then goes back to HSDPA. If seeting to LTE only it stays on LTE but not sure how it will work if I leave 4G coverage? I've also enabled fast dormancy but that doesn't seem to help.

There was a discussion about this in the UK thread, some phones came with 4G deactivated (on the 800MHz band used by 3 and Vodafone) that had to be activated at every boot. Replacing it fixed the problem as its not supposed to happen. But since the phone is from Asia who knows. Im not sure if flashing the eur version of the rom would work?

lewisco said:
Is there anything that can be done without root? I've tried setting the LTE in the hidden services menu and it connects foe a few seconds and then goes back to HSDPA. If seeting to LTE only it stays on LTE but not sure how it will work if I leave 4G coverage? I've also enabled fast dormancy but that doesn't seem to help.
Click to expand...
Click to collapse
fast dormancy is a network dependant setting that has nothing to do with the generation of signal you are receiving.
The only other option you have is to try and flash another firmware version.

Lennyuk said:
fast dormancy is a network dependant setting that has nothing to do with the generation of signal you are receiving.
The only other option you have is to try and flash another firmware version.
Click to expand...
Click to collapse
Can you recommend which FW to use?

Same here d855 version 3gb ram from Hong Kong no lte in the settings

stinkypoo said:
Same here d855 version 3gb ram from Hong Kong no lte in the settings
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Click to collapse
LTE will work from the hidden menu, or download 4G switcher from the Play store which will take you to the menu also. Just change it to LTE/GSM/WCDMA and it will work on the 4G network (at least on 3 UK). LG UK support will not help as it came from HK. I still want to know if I can flash a Euro 32GB ROM to my phone to get it working natively.

make sure u have activate your LTE with your carrier,i you have done it,and still didnt have LTE, try the hidden menu,or try 4G switch frm playstore,rooting and deleting lteconfig from system/app would be your last option (i prefer this)

Lennyuk said:
if you have root you can try deleting (or renaming) LTE Config.apk from /system/app
Click to expand...
Click to collapse
thank you, this fixed my problem!
my lte/3g/2g settings was everytime reset to 2g/3g modus when i got back to settings. i deleted lte config.apk and the .odex file, rebooted and BAM! it keeps on lte/3g/2g

Solved
I had the same issue (no LTE option in Networks configuration menu), until today: My phone installed firmware V10i-HKG-XX, and now I have the "GSM/WCDMA/LTE auto" option in Preferred Network Mode.
Cheers

LG G3 Asian D855 no 4G
lunlun99 said:
Hello
I have just got a LG G3 D855 from Asia. and the item can't find the LTE network. only work on WCDMA & GSM. any one have that problem and how can fix it
Lun
Click to expand...
Click to collapse
Do the following -
1. From the dailer, type in 3845#*855#
2. Select LTE Only
3. Modem Setting
4. RAT Selection
5. GSM/WCDMA/LTE Auto
You should now receive 4G but everytime you reboot, you have to repeat this procedure

LG G3 Cat 6 can not connect LTE (Only 3G)

I live in Detroit,USA. I am using T-Mobile.My cell phone is Lg G3 Cat6. But I can not connect LTE. ( Only 3G ). Can you help me?

Make sure the APN is set to T-Mobile settings and if that doesn't work then it may not support the American LTE bands and you will be stuck in 3G.

I don't think the F460 supports T-Mobile's penta band set up, it may only work with a couple of them. Check their bands and then look in your service menu by dialing 5457#*460#

4G Network Spectrum

Hi
Currently I'm not being able to get the 4G network and in mu country they're using the 1800 frequency (LTE 1800).
Is there a way to change it in the settings so as I can get hold of the 4G?
Thanks.

lenovop780 said:
Hi
Currently I'm not being able to get the 4G network and in mu country they're using the 1800 frequency (LTE 1800).
Is there a way to change it in the settings so as I can get hold of the 4G?
Thanks.
Click to expand...
Click to collapse
You should get 4g on the 1800 frequency. You can change between 3g and 4g in mobile data settings. However even if your network has 4g it will display 3g if you are not in a strong 4g signal area. It is the same here in the UK, 4g is fine where I live but I go over a bridge 5 minutes walk away and I can only get 3g! On some networks you need a new sim card for 4g to work as I did. Also do you have the correct APN settings for your network?

Yes I have the correct APN; otherwise if it's wrong I won't even get any data connection. Yes, I might be in a region where it's weak or unavailable but when I'm in a region fully covered by 4G, just outside the HQ of Orange, I still don't get it.

Try using mtk engineering mode app from play store(by go! or themonster) to force LTE - it's under telephony/network selecting.

yes then what do you do?

How to prevent oneplus 3 from connecting to slow 850mhz band

Hi guys i wanna know that if there is any way possible to lock op3 on band 40 only i.e 2300mhz band and prevent it from switching on to low speed 850mhz band. I am on stock oxygen os 3.2.4.any help will be appreciated. Thanks

How to know - to which band our phone is connected

JumboMan said:
How to know - to which band our phone is connected
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Click to collapse
There is an app called netvelocity by jio. It tells the info regarding the band and other info as well

Dial *#*#4636#*#* go into phone information >> press the 3 dots menu >> choose radio bands ..
Choose band 40 from the list ....
I am using Jio as well .. It does change the band to 2300 MHz and I get about 40Mbps Instead of abysmal 2 Mbps on 850 MHz !
You need to do that every time you boot your phone .

anirudhnyg said:
Dial *#*#4636#*#* go into phone information >> press the 3 dots menu >> choose radio bands ..
Choose band 40 from the list ....
I am using Jio as well .. It does change the band to 2300 MHz and I get about 40Mbps Instead of abysmal 2 Mbps on 850 MHz !
You need to do that every time you boot your phone .
Click to expand...
Click to collapse
Setting the band 40 in this option will result in setting the same band for both sims ...
i m using normal 2g/3g sim in sim1 slot and jio sim in sim2 slot..
after selecting band 40 in that settings will result in no network for sim1(normal reliance sim)..
so , how to rectify that..??

hijagdeep said:
Setting the band 40 in this option will result in setting the same band for both sims ...
i m using normal 2g/3g sim in sim1 slot and jio sim in sim2 slot..
after selecting band 40 in that settings will result in no network for sim1(normal reliance sim)..
so , how to rectify that..??
Click to expand...
Click to collapse
Try putting Jio in Sim slot 1
I have an Airtel sim in slot 2 I still have signal In Airtel even after choosing band 40. .
---------- Post added at 07:15 PM ---------- Previous post was at 07:15 PM ----------
PS : Probably because Airtel has 2300 MHz network too ..

anirudhnyg said:
Try putting Jio in Sim slot 1
I have an Airtel sim in slot 2 I still have signal In Airtel even after choosing band 40. .
---------- Post added at 07:15 PM ---------- Previous post was at 07:15 PM ----------
PS : Probably because Airtel has 2300 MHz network too ..
Click to expand...
Click to collapse
it worked thanxxx ..
that option will only change band for sim1 ...
but how to get back to default band without restarting phone...??
Post Edited
after some times , signal for normal sim2 gone , have to restart my mobile to get network in normal sim

You can't really choose your own band.
We have some parameters in the Network, that decide the priority of which frequency band you connect to.
Generally, where Signal, quality and load allow, we let you connect to higher frequency.

anirudhnyg said:
Dial *#*#4636#*#* go into phone information >> press the 3 dots menu >> choose radio bands ..
Choose band 40 from the list ....
I am using Jio as well .. It does change the band to 2300 MHz and I get about 40Mbps Instead of abysmal 2 Mbps on 850 MHz !
You need to do that every time you boot your phone .
Click to expand...
Click to collapse
I did that that but its not setting my jio sim's frequency on 2300mhz. Its still on 850mhz. On which rom are u? I am on oxygen os 3.2.4 and this trick isn't working for me sadly:crying:

Are you able to use VoLte on Jio?

ankushgautam said:
I did that that but its not setting my jio sim's frequency on 2300mhz. Its still on 850mhz. On which rom are u? I am on oxygen os 3.2.4 and this trick isn't working for me sadly:crying:
Click to expand...
Click to collapse
I am on Sultan CM 13 .
Yes VOLTE works in Jio and OP3

anirudhnyg said:
Dial *#*#4636#*#* go into phone information >> press the 3 dots menu >> choose radio bands ..
Choose band 40 from the list ....
I am using Jio as well .. It does change the band to 2300 MHz and I get about 40Mbps Instead of abysmal 2 Mbps on 850 MHz !
You need to do that every time you boot your phone .
Click to expand...
Click to collapse
What app do you have to check the band connected. I also have jio but i do not get such high speeds.

Funk Wizard said:
What app do you have to check the band connected. I also have jio but i do not get such high speeds.
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Click to collapse
There is an app named netvelocity.. Just google jiostore and download it from there.. But problem for me is thay the bands are not getting locked for me from *#*#4636#*#*. The connection does get reset after selecting band 40 but netvelocity app shows 850mhz band and speed remains same as well. Only when i go outdoors then my op3 gets connected to band 40 nd i get full 4g speed of around 30-40 Mbps

ankushgautam said:
There is an app named netvelocity.. Just google jiostore and download it from there.. But problem for me is thay the bands are not getting locked for me from *#*#4636#*#*. The connection does get reset after selecting band 40 but netvelocity app shows 850mhz band and speed remains same as well. Only when i go outdoors then my op3 gets connected to band 40 nd i get full 4g speed of around 30-40 Mbps
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Click to collapse
Yeah that's right it tends to fluctuate that's the reason of low speeds.

ankushgautam said:
There is an app named netvelocity.. Just google jiostore and download it from there.. But problem for me is thay the bands are not getting locked for me from *#*#4636#*#*. The connection does get reset after selecting band 40 but netvelocity app shows 850mhz band and speed remains same as well. Only when i go outdoors then my op3 gets connected to band 40 nd i get full 4g speed of around 30-40 Mbps
Click to expand...
Click to collapse
In my one plus three, it doesn't show any band information
See the screenshot attached
Sent from my One Plus Three using xda premium

hijagdeep said:
In my one plus three, it doesn't show any band information
See the screenshot attached
Sent from my One Plus Three using xda premium
Click to expand...
Click to collapse
You need to enable it by clicking on More (top right corner)
If you don't have the More option then download the Netvelocity enterprise apk
Selecting band 40 from *#*#4636#*#* didn't work for me
Stuck on 850 Mhz.

ushpiy said:
You need to enable it by clicking on More (top right corner)
If you don't have the More option then download the Netvelocity enterprise apk
Selecting band 40 from *#*#4636#*#* didn't work for me
Stuck on 850 Mhz.
Click to expand...
Click to collapse
Same here.. Can't go on to band 40 even after selecting it and band 850 is giving almost 2g speeds... Everytym i have to go outside my house to download any big file.. Someone needs to solve this for us... I don't want to hate my oneplus 3 for this

selecting band 40 won't make you stop connecting to band 5,
and sadly there's no way we can lock our LTE connection to certain band yet, neither to set the preference
i understand your frustation, since my provider is also using band 5 & 40 for the LTE. If you are in rural/suburban area, it will connect to 850Mhz most of the time, since lower freq has a better penetration and coverage range.
2300Mhz mostly used in city & building, since it can give better throughput

otonieru said:
selecting band 40 won't make you stop connecting to band 5,
and sadly there's no way we can lock our LTE connection to certain band yet, neither to set the preference
i understand your frustation, since my provider is also using band 5 & 40 for the LTE. If you are in rural/suburban area, it will connect to 850Mhz most of the time, since lower freq has a better penetration and coverage range.
2300Mhz mostly used in city & building, since it can give better throughput
Click to expand...
Click to collapse
That's exactly what's happening and i am getting almost 2g speeds on 850mhz...really frustrating... Anyways i hope soon there is a solution to this problem... I just wish i could remove 850mhz band from my phone... Grrrrr

ushpiy said:
You need to enable it by clicking on More (top right corner)
If you don't have the More option then download the Netvelocity enterprise apk
Selecting band 40 from *#*#4636#*#* didn't work for me
Stuck on 850 Mhz.
Click to expand...
Click to collapse
My app have more option...and I have even enabled advanced mode , but didnt get band information....
Do u able to access band info in your OnePlus3..?

LG G4 weird 4G problem

Hello, I have a G4 H815 with some weird problem. Anytime it connects to 4G network is unstable, dropping and coming back. I have tried with 2 different providers, with 3 different stock roms LP, MM and Nougat. APN's are set correct. I have entered Hidden menu and there Engeenering mode, and there I was watching that 4G qpes quickly from B3 to B20 (LTE bands supported in my country) and also goes to B0 (???) and vice versa. It seems that 4G is most stable when is on B3, and that is dropping down when on B20 or B0 (??) When it's connected on 3G (H+) there is no problem and the network is stable. My wife have same H815 without problems, and I have watched Engeenering mode her phone stays stable on B3, and it doesn't change bands so often. Anyone can tell me some solution? Thanks.

So I have managed to downgrade to Lollipop, rooted the phone, installed Network Signal Guru, and then with that APP to disable all other networks except B3, and now phone works as it should. So I think the problem was B20 (800 mhz), but I'm not sure why.

scytalemk said:
So I have managed to downgrade to Lollipop, rooted the phone, installed Network Signal Guru, and then with that APP to disable all other networks except B3, and now phone works as it should. So I think the problem was B20 (800 mhz), but I'm not sure why.
Click to expand...
Click to collapse
Its likely your network provider operates on more than one band for 4G
You could set it to 3G, or like you did disable the band

Network Problem Solved!!!
sometimes no network problem solved!!!
1) i am using g4 f500k which had weird network\signal problem. i've tried many options but no success. Finally I dial 5457#*500# got into WCDMA service menue>MPTCP settings>MPTCP Congestion change and select ''OLIA''. That completely solved my problem with no more network issue. If you have a deferent varient follow this dial code 5457#*your model# hope this would work.
2) also select WCDMA chanel into "user"

Solved!!!!
scytalemk said:
Hello, I have a G4 H815 with some weird problem. Anytime it connects to 4G network is unstable, dropping and coming back. I have tried with 2 different providers, with 3 different stock roms LP, MM and Nougat. APN's are set correct. I have entered Hidden menu and there Engeenering mode, and there I was watching that 4G qpes quickly from B3 to B20 (LTE bands supported in my country) and also goes to B0 (???) and vice versa. It seems that 4G is most stable when is on B3, and that is dropping down when on B20 or B0 (??) When it's connected on 3G (H+) there is no problem and the network is stable. My wife have same H815 without problems, and I have watched Engeenering mode her phone stays stable on B3, and it doesn't change bands so often. Anyone can tell me some solution? Thanks.
Click to expand...
Click to collapse
Settings>battery and power savings>battery percentage on the status bar> off
Let me know if it worked for you.