[D855][HELP!] No LTE/ 4G on "Personal" carrier - Need Repair Network - G3 Q&A, Help & Troubleshooting

Hi guys , first, sorry for my Inglés , I'm Argentinian .
The question is that ... I bought an LG G3 D855AR , the phone has been unlocked by some box . All configs and networks was working fine until change ROM, from KK to CM13, then no more LTE but another functions work right. I tried all solutions can be possible. Change IMEI, change bands of LTE on NV Browser. Some people told me about "Repair Network" that thing is on services boxes (Octopus box, z3x..) is another way to repair the Network? VIA USB and my pc.
Thaks !!!!
PD: My Esn And IMEI not are the original and I dont know the original numbers and how change the esn MEID too

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[Q] very strange issue

hi,
first off all sorry for my poor english... :d
I bought a DHD from netherland actualy the phone comes from england( virgin telecom branded)
when i was home with my " new " phone. i started to unlock this machine.
- 1/ make a goldcard succeed
- 2/ downgrade to 1.32.x it was 1.75.x so i must be downgrade succeed
- 3/ radio s-off en then ENG s-off succeed
- 4/ then check my bootloader i have a supercid cid is 111......
everythink is okey so far my phone is unlockt.
now, in belgium we have 3 providers proximus, mobistar and base(kpn group)
if i insert proximus and mobistar i can send and talk no problem at all.
but if i insert base sim card i can't send or talk because i have no network,
but i have one think "mobile data" so i can to internet with gprs no network.
i have tried another base sim the same, i have tried my sim in other phone works perfect. i have talk to the service hotline they says everything is okey here you must be able to connect in our network.
when i try to manual search to a network en then select base i have a error
" your sim card doesn't allowed to register to this network"
i already install another radio, another rom...
who can help me, otherwise i gonna slam it to the f*cking wall.
thanks
my specs.
andriod : 2.3.2
baseband : 12.28b.60.140eu_26.03.02.26_m
kernel; 2.6.35.10-g4a4b278
build 2.16.0.0
andriod revolution hd 4 f*cking 0 :d btw: perfect rom i like it
Hi, don't apologise for your English, its perfectly understandable!
What frequencies does this Base use, are you sure the DHD supports them?
I remember a week or so back someone had the same issue with the Base network. I don't think that was resolved either.
hi,
base uses this band :E-GSM and DCS-1800
width(mhz) : 2 x 5 and for dhs-1800 :2 x 22
channel : 25 " " " " ; 110
i think desire hd is compatible with that frequencies stuff.
why have i grps network but no normal signals?
There is something to do with imei block or something?
I would try speaking to Base see if they offer support for DHD, if they do offer official support that would suggest it should work on their network, is Base in the APN list for ARHD?
i don't know exactly
i have been spoke with them. they says you must do a unlock for the phone
but i have already done, very f*king strange.
where you exacty can see for the arhd?
i think the best solution is: i gonna sell them, and buy a regular/no branded phone.
i worked 2 weeks with that phone.
erase everythink start again, again again. factory reset etc..
but sometimes i have network when i do restart iets gone again.
damn
nuri1 said:
but sometimes i have network when i do restart iets gone again.
damn
Click to expand...
Click to collapse
Sounds like an issue with ARHD to me, if you can see a network sometimes very strange, have you tried a different ROM? possibly just a rooted stock i.e one of the raidroid roms

Changing imei issues ?

Hello guys, firstly thank you for your all answers (yea 1st. message yay :victory i bought my first android phone (galaxy note 2 n-7100) what i want to ask to you is i bought my phone from another country and i need to change my imei to use it in my country ;
- If my imei is changed it by that or other ways, when i updated my device to (for example custom rom or 4.2) another firmware will my imei return to old one?If yes is it possible to make a backup which include imei, 3g settings etc.?
Thank you. :good:
ciko84 said:
Hello guys, firstly thank you for your all answers (yea 1st. message yay :victory i bought my first android phone (galaxy note 2 n-7100) what i want to ask to you is i bought my phone from another country and i need to change my imei to use it in my country ;
- Is it possible to change imei by NOT using octobus box or sth. like that.
- If i changed it by that or other ways, when i updated my device to (for example custom rom or 4.2) another firmware will my imei return to old one?If yes is it possible to make a backup which include imei, 3g settings etc.?
Thank you. :good:
Click to expand...
Click to collapse
as changing imei in this country is ilegal mate dont think you,ll get any answers on that question mate think its against forum rules to even talk about it
It's illegal in many countries, for good reason too. OP has no need to change their IMEI just because they got their device in another country. If their network uses the frequencies the phone uses, it will work.
FloatingFatMan said:
It's illegal in many countries, for good reason too. OP has no need to change their IMEI just because they got their device in another country. If their network uses the frequencies the phone uses, it will work.
Click to expand...
Click to collapse
Well if you say so then can you answer my other question?
This is illegal and no need for it, if u want to use ur phone in another country just flash the International unlocked stock rom or ur phone country stock rom, thayeof course if ur phone hardware supports it...
↖(^▽^)↗ Sent From Rego Galaxy Note!! ↖(^▽^)↗
FloatingFatMan said:
It's illegal in many countries, for good reason too. OP has no need to change their IMEI just because they got their device in another country. If their network uses the frequencies the phone uses, it will work.
Click to expand...
Click to collapse
Not in every country. For example in Turkey you have to register your imei(for a fee of course) to work within the country. Imei's of phones sold in the country are registered by importer.

[I747M] Change CSC

Hello everybody,
I have a samsung I747M from Canada. I'm french and I'm using it here.
Data connexions are only in EDGE (the same as 2G). I want to have 3G data connexions. All the settings in the NPA are good.
I think the problem come from the CSC which is still the one attached to Canada (BMC).
All the firmwares are for Canada. I want to change the CSC (BMC now) to XEF (the one for France).
Does someone have an idea to fix this situation ?
Thank you and Merry Christmas !
PS : Sorry for my english...
You might have to carrier network unlock the phone.
Does the i747m support the carrier's 3g frequencies?
StoneyJSG said:
You might have to carrier network unlock the phone.
Click to expand...
Click to collapse
Thank you for your answer but my phone is already unlocked.
I'm using it in France with a local operator (Bouygues). Data connexions are only in 2G and not in 3G.
I think if I will change the CSC it will be good
audit13 said:
Does the i747m support the carrier's 3g frequencies?
Click to expand...
Click to collapse
I think so.. How can I know pleas ?
In network settings there are GSM, LTE etc
You can check here: http://willmyphonework.net/
audit13 said:
You can check here: http://willmyphonework.net/
Click to expand...
Click to collapse
I've checked and it works in 3G
I don't think it is a firmware problem because I took my s3 to London a couple of years ago. It was running stock bell firmware, network unlocked, and I was able to get 3G data connections without doing anything to the stock rom. Changing the Csc should not make a difference.

Network problem in France, buying seller english asian phone

Hello everyone, I bought this wonderful phone from an English seller on Ebay. But since the 1st day, I have big network worries I do not capture the same 4g in town. I come to you because I think this must be a software problem, which is not expected for a commercialization in Europe. I tried several manipulations to unlock the bootloader, trying to change rom..rien to do I have this impression of being stuck..Help me please.
Phone info :
Version d'android : 5.1
Version de bande de base : MPSS.BO.2.5.c3-00060-M8992FAAAANAZM-1.18275.1
Version du noyau : 3.10.49
Numéro de build : LMY47D
Version logicielle : V10b-GLOBAL-COM
anis625 said:
Hello everyone, I bought this wonderful phone from an English seller on Ebay. But since the 1st day, I have big network worries I do not capture the same 4g in town. I come to you because I think this must be a software problem, which is not expected for a commercialization in Europe. I tried several manipulations to unlock the bootloader, trying to change rom..rien to do I have this impression of being stuck..Help me please.
Phone info :
Version d'android : 5.1
Version de bande de base : MPSS.BO.2.5.c3-00060-M8992FAAAANAZM-1.18275.1
Version du noyau : 3.10.49
Numéro de build : LMY47D
Version logicielle : V10b-GLOBAL-COM
Click to expand...
Click to collapse
Make sure the devices lte bands match that of your carriers lte bands. Dont look at 2g and 3g bands. Only lte bands. Second id say make sure your apn settings are correct.
And last is make sure in mobile networks you have global or gsm cdma and lte selected
---------- Post added at 11:22 AM ---------- Previous post was at 11:19 AM ----------
A lot of times this could be due to specific hardware not picking up propper lte bands or those bands not being enabled. Which u can google on enabling hidden lte bands. I didnt notice what model u had from the seller. I noticed u said manipulations of unlocking bl so where u sucsessful? Then its a h815 i believe which would be the global model. Which then could be software relTed or a settings issue.
I had not specified that it is a h815 international version but planned for a planned commercialization in Singapore. According to my operator the antenna 4g near my home uses only the band 800 which is normally compatible with ... I also have a lg g4 that works perfectly with my chip. All APN settings are correct .. Is there a way to force to use this tape?
I tried manipulation to unlock the bootloader with the official version of LG but it is an Asian phone .. I thought of a software problem so I tried with lg bridge that does not pick up my phone. Is there any other way?
anis625 said:
I had not specified that it is a h815 international version but planned for a planned commercialization in Singapore. According to my operator the antenna 4g near my home uses only the band 800 which is normally compatible with ... I also have a lg g4 that works perfectly with my chip. All APN settings are correct .. Is there a way to force to use this tape?
I tried manipulation to unlock the bootloader with the official version of LG but it is an Asian phone .. I thought of a software problem so I tried with lg bridge that does not pick up my phone. Is there any other way?
Click to expand...
Click to collapse
Dont know about ure version i still use old lg flashtool from g2 to flash my stock firmwares but i have a sprint varient which i believe is one of the only few use .tots files instead of .kdz file format
What is the method ?

Which part of the firmware influences cellular signal quality?

is it the CP or the CSC? I have a korean 'N' S9 but I live in a country that gets the International 'F' devices, and my data network speed is garbage compared to the local samsung devices, and I was wondering whether this was a firmware issue or a hardware issue (as in the components in the korean version are somewhat different).
Coomer91 said:
is it the CP or the CSC? I have a korean 'N' S9 but I live in a country that gets the International 'F' devices, and my data network speed is garbage compared to the local samsung devices, and I was wondering whether this was a firmware issue or a hardware issue (as in the components in the korean version are somewhat different).
Click to expand...
Click to collapse
radio firmware and band selection found not within firmware, rather its located in the service menu. *#2263#
BEWARE tho. There are things in that menu that if you eff them up, theyre no un-effing them up
Hello I have a similar issue :
I bought a SM-G960U to use in a country where we normaly use the 960F version..... The caracteristics of both phone are similar for GSM/UMTS/LTE and should be compatible, but my G960U has a very poor signal reception, and a very bad speed for LTE/4G
Is It possible to flash the G960U with a 960F ROM ? Will It improve something ?
yan74s said:
Hello I have a similar issue :
I bought a SM-G960U to use in a country where we normaly use the 960F version..... The caracteristics of both phone are similar for GSM/UMTS/LTE and should be compatible, but my G960U has a very poor signal reception, and a very bad speed for LTE/4G
Is It possible to flash the G960U with a 960F ROM ? Will It improve something ?
Click to expand...
Click to collapse
well, technically..... its possible, but for the sake of conversation, no. You cant flash a F ROM on a U device. The issue youre having is due to the LTE bands enabled on the phone. The only way to change those is with the service menu, which i do not know how to navigate on this phone. To get to the service menu, go to the dialer and enter *#2263# and itll bring up the service menu which is only navigable with the keypad. It should show you a menu with corresponding numbers, but DO NOT MESS AROUND IN THERE!!!
You have been warned, and im not kidding. If you mess stuff in that menu, it could be permanent and could brick your phone
OK, thanks for your advice .....
*#2263# doesn't work for me, but with *#0011# I can access to the "service mode" ... Is it the same than "service menu" you were talking about ?
I've found some informations here (sorry it's in french, and the video in spanish)
https://lafibre.info/4g/forcer-samsung-freq/
The problem is that to accesds the menu : the step 3 doesn'nt work (type Q and after 0000 ) the menu doesn't open in my phone
yan74s said:
OK, thanks for your advice .....
*#2263# doesn't work for me, but with *#0011# I can access to the "service mode" ... Is it the same than "service menu" you were talking about ?
I've found some informations here (sorry it's in french, and the video in spanish)
https://lafibre.info/4g/forcer-samsung-freq/
The problem is that to accesds the menu : the step 3 doesn'nt work (type Q and after 0000 ) the menu doesn't open in my phone
Click to expand...
Click to collapse
here, there are several *# code combinations that folks use come on over to this thread. Different phone, i know, but its just the + of the same device

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