Develop Bugs

Need Help with LTE F240L

i have a g pro f240L from korea. whenever i try to turn on 4G LTE (its nowhere in my settings i download an app to go deep in the phone settings and access LTE menu) i always get an error "this application does not work on this device" . i need help on this . thank you!

markyrevilla said:
i have a g pro f240L from korea. whenever i try to turn on 4G LTE (its nowhere in my settings i download an app to go deep in the phone settings and access LTE menu) i always get an error "this application does not work on this device" . i need help on this . thank you!
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Well what country do you live in? whats your carrier? Just because a phone has LTE does not mean it has the same bands are your carrierhas...

hyelton said:
Well what country do you live in? whats your carrier? Just because a phone has LTE does not mean it has the same bands are your carrierhas...
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in the philippines,and ofcourse i know that. The carrier is not a problem because its supported. the problem is the phone settings, the f240k model has an option on the settings to choose between cdma/lte or just cdma. but this one hte f240L doesnt have that.

[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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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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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.
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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
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what's activated mean ?

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

lunlun99 said:
what's activated mean ?
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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
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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.
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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
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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.
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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.
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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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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
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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

LTE

Hi i have just purchased the z1 compact second hand from ebay and i cannot find any setting forLTE in mobile networks i can only select wcdma only/gsm only/ and wcdma prefred. My sim card is on the UK 3 network and previously was working on LTE.

Well is fine here.factory reset?

no LTE
zlata said:
Well is fine here.factory reset?
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No good look this is mine.

sam0056 said:
No good look this is mine.
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What about SERVICE menu?
Dial *#*#7378423#*#* and go to Service Info>Configuration. You should get something like the first attachment.
Also, You can check under *#*#4636#*#* and then check the set preferred network type like attachment 2.

fixed Lte
Mirhawk said:
What about SERVICE menu?
Dial *#*#7378423#*#* and go to Service Info>Configuration. You should get something like the first attachment.
Also, You can check under *#*#4636#*#* and then check the set preferred network type like attachment 2.
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Click to collapse
OK i managed to fix it by flashing a stock Kitkat rom from Central Europe. After flashing the stock rom LTE is now showing up and working guess ill just stick with KitKat for now

Accessing service menu

I was recently in Korea for work, so I picked up the G4 to bring back to the US. I bought it from SK Telecom, they told me phone should work globally. Now being back in the US, i popped in my Verizon Sim card and no mobile network is available. Phone is reading my sim and has the correct APNs, but still no connection. Does anyone know how to access the service menu to change bands?

bmpolska said:
I was recently in Korea for work, so I picked up the G4 to bring back to the US. I bought it from SK Telecom, they told me phone should work globally. Now being back in the US, i popped in my Verizon Sim card and no mobile network is available. Phone is reading my sim and has the correct APNs, but still no connection. Does anyone know how to access the service menu to change bands?
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Verizon is cdma. Korea and most of the world is gsm. Like t mobile

xantanion said:
Verizon is cdma. Korea and most of the world is gsm. Like t mobile
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I figured, but does anyone know how to access the hidden menu to view all the bands available?

5457#*500#
That should do however I can't access the main hidden menu to disable the throttling.

Thanks for the info 3rd degree.
I tried that on my H815 G4 but it didn't work (invalid code).
I also tried 5457#*815# but that didn't work either.
Unfortunately the 3845#*modelnumber# that always worked previously doesn't now. eg 3845#*815# just gives the invalid code error.
*Edit* the answer is in this thread:
http://forum.xda-developers.com/g4/help/how-to-enter-g4-hidden-menu-t3122373
the code that works for me is 277634#*#

bmpolska said:
I was recently in Korea for work, so I picked up the G4 to bring back to the US. I bought it from SK Telecom, they told me phone should work globally. Now being back in the US, i popped in my Verizon Sim card and no mobile network is available. Phone is reading my sim and has the correct APNs, but still no connection. Does anyone know how to access the service menu to change bands?
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Click to collapse
If you call 277634#*# it wil open the menu and Go into Field Test > Modem Settings and will let you change it

Rehok said:
If you call 277634#*# it wil open the menu and Go into Field Test > Modem Settings and will let you change it
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For some reason, field test isn't an option on my Tmo variant. Any ideas? (i'm trying to see what LTE bands are enabled)

anyone knows the marshmallow code?

Lg g4 mobile data connection problems

my g4 can't seem to achieve H+ connection even if it is available in my area.
my phone could only connect with H.
is this normal or is there something wrong with my phone or its settings?

Do you live in Philippines? I am having the same issue, not most of the time. There was some circumstances that my mobile data is not working even when subscribed to a data promos.

yes, i'm from the philippines

Hey, how was your phone now? Are you on marshmallow?

still can't connect with H+
i'm using marshmallow

pipeysh said:
still can't connect with H+
i'm using marshmallow
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go to *#546368#*815#
then field test
then modem settings
then rat selection
then select wcdma only.try once.

how did you guys fix this problem where did you buy your phones?