Database Users

Reception/Modem/Baseband

Hello,
I recently upgraded from Xperia Arc S to Samsung Galaxy S4 I9505.
I bought my device from Hong Kong, with HK firmware. After I opened the package I put my SIM inside,
the reception was not very good. I was instructed by the company to use GSM only since there is no
LTE network in Israel as of today.
I flashed a couple of ROMs since and today I am on MIUI v5 which is my favorite, the reception remains
the same in all ROMs, quite bad compared to my old Xperia Arc S.
I was wondering about basebands and modems, I have been watching those two names floating around
the forums quite a bit and I never got around to playing with those.
So my questions are as follows:
1. Is there a different between modem and baseband or are these two just different words that refers to the same thing?
2. Does changing a baseband/modem can help get better reception?
3. If the answer to 2 is yes, which one should I get?
Thanks,
Oded

Yes modem/baseband are the same thing. Go to SamMobile website Google it, then go to the firmware section, choose the S4 find your carrier and see the latest rom for your carrier in the file name will be some letters and numbers like XXNA5 etc. This will give you a base to start with. Or tell me your operator and I can take a look.
Sent from my GT-I9505G using Tapatalk

nikzDHD said:
Yes modem/baseband are the same thing. Go to SamMobile website Google it, then go to the firmware section, choose the S4 find your carrier and see the latest rom for your carrier in the file name will be some letters and numbers like XXNA5 etc. This will give you a base to start with. Or tell me your operator and I can take a look.
Sent from my GT-I9505G using Tapatalk
Click to expand...
Click to collapse
Thanks for the quick reply. How do I find out which firmware I need to download? Israel is not in the list. My carrier is called Orange. http://orange.co.il/
behind the battery it says:
GT-I9505
SSN: -I9505GSMH
RATED
Made by...
Imei...
S/N...
EDIT:
You didn't answer if the incorrect baseband can cause bad reception... it sounds to me like it does but I just want to make sure.
I also noticed that when I reboot my device it goes back to WCDMA only automatically so everytime I reboot/power off I need to reset it to GSM only using *#*#4636#*#*

BUMP

oded_sk said:
Hello,
I recently upgraded from Xperia Arc S to Samsung Galaxy S4 I9505.
I bought my device from Hong Kong, with HK firmware. After I opened the package I put my SIM inside,
the reception was not very good. I was instructed by the company to use GSM only since there is no
LTE network in Israel as of today.
I flashed a couple of ROMs since and today I am on MIUI v5 which is my favorite, the reception remains
the same in all ROMs, quite bad compared to my old Xperia Arc S.
I was wondering about basebands and modems, I have been watching those two names floating around
the forums quite a bit and I never got around to playing with those.
So my questions are as follows:
1. Is there a different between modem and baseband or are these two just different words that refers to the same thing?
2. Does changing a baseband/modem can help get better reception?
3. If the answer to 2 is yes, which one should I get?
Thanks,
Oded
Click to expand...
Click to collapse
1. Same thing .
2. Yes.
3. You can check it from here that Base from your country/Provider . And you can download it from here

The problem is that Israel is not on that list, I think because we don't have LTE network and my device is LTE.
My carrier is using GSM network only.

Israel don't sell the I9505 officially, they have the I9500 available from your carriers.
Looking at the I9500 with Orange the latest I9500 modem is: I9500JKUEMJ9
Obviously do not flash the I9500 modem but you can try XXUEMJ9 from the I9505 instead.
From here: http://forum.xda-developers.com/showthread.php?t=2192025
Download the modem and flash via Odin. You can any of the I9505 modems. Just try until you get a good one, and as for LTE it doesn't matter in the network settings you will obviously be choosing 3G option instead.

nikzDHD said:
Israel don't sell the I9505 officially, they have the I9500 available from your carriers.
Looking at the I9500 with Orange the latest I9500 modem is: I9500JKUEMJ9
Obviously do not flash the I9500 modem but you can try XXUEMJ9 from the I9505 instead.
From here: http://forum.xda-developers.com/showthread.php?t=2192025
Download the modem and flash via Odin. You can any of the I9505 modems. Just try until you get a good one, and as for LTE it doesn't matter in the network settings you will obviously be choosing 3G option instead.
Click to expand...
Click to collapse
I see, well, it didn't work, I flashed about 7 different modems and I still get bad reception indoors and good reception outdoors.
I will try to test other SIMs of other carriers on this device to see if reception improves.
Thank you very much for you help!

4.4.2
Anyone knows which modems can I flash in a stock i9505 4.4.2 rom?

Inamati said:
Anyone knows which modems can I flash in a stock i9505 4.4.2 rom?
Click to expand...
Click to collapse
Any modem you want to flash. But try the 4.4.2 versions.
Sent from my GT-I9505G using Tapatalk

nikzDHD said:
Any modem you want to flash. But try the 4.4.2 versions.
Sent from my GT-I9505G using Tapatalk
Click to expand...
Click to collapse
Really? I ask this question because when flashing stock 4.4.2 I had to flash a specific modem otherwise it wouldn't work. If I flash another modem different from FNA5 won't it cause problems in the ROM?

Inamati said:
Really? I ask this question because when flashing stock 4.4.2 I had to flash a specific modem otherwise it wouldn't work. If I flash another modem different from FNA5 won't it cause problems in the ROM?
Click to expand...
Click to collapse
Depends what bootloader your on, I'm assuming your on the new bootloader so you need to flash both the LTE and GSM modems. I'm on a GE 4.4.2 rom and old bootloader running on an older modem and not got any issues. Try it and see what happens you can always flash another after or go back to a 4.4.2 modem.

nikzDHD said:
Depends what bootloader your on, I'm assuming your on the new bootloader so you need to flash both the LTE and GSM modems. I'm on a GE 4.4.2 rom and old bootloader running on an older modem and not got any issues. Try it and see what happens you can always flash another after or go back to a 4.4.2 modem.
Click to expand...
Click to collapse
OK thanks a bunch. If not too much trouble can you point me to a list of the modems you speak of? And is there anywhere where it's detailed how to flash both modems? When I changed modem in the previous ROM's I only had to flash one.

Inamati said:
OK thanks a bunch. If not too much trouble can you point me to a list of the modems you speak of? And is there anywhere where it's detailed how to flash both modems? When I changed modem in the previous ROM's I only had to flash one.
Click to expand...
Click to collapse
This thread has all the info you need:
http://forum.xda-developers.com/showthread.php?t=2192025

A small tip to whom ever is reading this: If you have reception problems just go to someone with the same phone model and just write down the information in about phone section such as: baseband, core, build etc so you know which one works 100% if your phone is the same model.
Anyways, nikzDHD, I9505XXUEML6_MODEM worked best, I flashed 90% of the modems... took me forever :/

[Q] Can I flash G900F modem on G900W8 and how?

I've been having a problem on my S5 where the data symbol is stuck on 4G and doesn't show anything else. It might be a baseband/modem error since I'm using a Canadian model in Cyprus. Can I use the modem from the Cyprus G900F firmware and flash it on my G900W8? Also can someone explain how I could do that so that I don't screw it up, if it is possible?

!
RE UP!
Same pb...

To flash a modem you need a .bin file and odin.
Clear your delvik/cache,
put your phone in download mode,
load phone with the .bin file and flash it.
I also am having data issues with all custom ROM's. If it's not one thing it's another. Canadian phones always get left in the dust it seems.

vasodys said:
Can I use the modem from the Cyprus G900F firmware and flash it on my G900W8?
Click to expand...
Click to collapse
Probably not. You neglected to tell us what your W8 baseband and firmware are, which is rather crucial information. Making it impossible to give you a definitive answer. In most cases Odin will refuse to allow the change.
That isn't really an issue most of the time. There should be a variety of W8 modems for you to choose from if you want to change your modem.
.

[Q]There's an issue.

Hello, right now I'm on RR Remix 5.4.5, I'm afraid that I don't have my CSC (Is it necessary to have it to get stock rom?)
I have my IMEI and PDA (XXUGNH6)
YES OPTUS (Aus) branded phone, can we guess the CSC?
Sent from my GT-I9505

You don't need csc. Ignore it.
Csc is only used on stock rom and custom roms based on stock. RR remix is based on CM.

Lennyz1988 said:
You don't need csc. Ignore it.
Csc is only used on stock rom and custom roms based on stock. RR remix is based on CM.
Click to expand...
Click to collapse
Yes I know, but I have another handset which needs to be flashed on stock firmware. And what if I ever need it?
Sent from my GT-I9505

You still don't need the CSC. You know your carrier and you know what device you have. That's enough information to download a ROM from sammobile. In your case, you have an I9505 running on Optus Australia. Through these two pieces of information, I was able to determine that these would work for you.
If your S4 is unlocked, you don't even need to know the carrier and can flash any I9505 ROM you desire.

Strephon Alkhalikoi said:
You still don't need the CSC. You know your carrier and you know what device you have. That's enough information to download a ROM from sammobile. In your case, you have an I9505 running on Optus Australia. Through these two pieces of information, I was able to determine that these would work for you.
If your S4 is unlocked, you don't even need to know the carrier and can flash any I9505 ROM you desire.
Click to expand...
Click to collapse
Oh nice mate, can you determine another one for me? It is also i9505 and has pda xxugnh8, no csc known either. Tried looking up roms for xxugnh8 but couldn't find one, that's also running rr remix
Edit: that phone really needs a reflash
Sent from my GT-I9505

I provided the link to illustrate how easy it is to find the correct ROM without needing the CSC. But that doesn't give you carte blanche to ask me to do the work for you. There is sufficient information in this thread for you to find the correct ROM for your other S4 without help.

Help with SM-N910H

Hi
I am noobish and would love some help from an expert
I Got my Note 4 SM-N910H on eBay a few years ago. I brought it unlocked not sure if its unlocked via IMEI or some other way (Its working with both USA AT&T sim and UK Virgin sim). Looks like it has been customized in some way because I went to Odin mode and it has binary & status custom and Knox voided.
Tried updating via settings and it will not allow it due to being modified. Tried Samsung Kies and it says its not supported.
Its currently on 4.4.4 firmware and i want to get it to 6.0.1.
I found a website with the official 6.0.1 firmware for N910H. (Cant post links but updato and samsung-firmware). The problem is there are multiple different country versions and I don't have a clue which country to pick? I want it in English. But there are none with USA or UK. Does the firmware country make a difference apart from language? I don't know what the original carrier was and there are no carrier specific apps installed. Does it have to be the same country as the original? Could I lose my unlock and not be able to use my sim card?
About Device:
Android 4.4.4
Baseband N910HXXU1ANIF
Kernal 3.10.9-2815469
Build Number KTU84P.N910HXXU1ANIF
Device Status Custom (Does that mean its rooted?)
I am happy with either official firmware or custom if its 6.0.1 or something better.
Please any tips/advice/guides or links would be greatly appreciated.
Thanks

speedfox87 said:
Hi
I am noobish and would love some help from an expert
I Got my Note 4 SM-N910H on eBay a few years ago. I brought it unlocked not sure if its unlocked via IMEI or some other way (Its working with both USA AT&T sim and UK Virgin sim). Looks like it has been customized in some way because I went to Odin mode and it has binary & status custom and Knox voided.
Tried updating via settings and it will not allow it due to being modified. Tried Samsung Kies and it says its not supported.
Its currently on 4.4.4 firmware and i want to get it to 6.0.1.
I found a website with the official 6.0.1 firmware for N910H. (Cant post links but updato and samsung-firmware). The problem is there are multiple different country versions and I don't have a clue which country to pick? I want it in English. But there are none with USA or UK. Does the firmware country make a difference apart from language? I don't know what the original carrier was and there are no carrier specific apps installed. Does it have to be the same country as the original? Could I lose my unlock and not be able to use my sim card?
About Device:
Android 4.4.4
Baseband N910HXXU1ANIF
Kernal 3.10.9-2815469
Build Number KTU84P.N910HXXU1ANIF
Device Status Custom (Does that mean its rooted?)
I am happy with either official firmware or custom if its 6.0.1 or something better.
Please any tips/advice/guides or links would be greatly appreciated.
Thanks
Click to expand...
Click to collapse
4.4.4 is the best if you want my advice don't upgrade you will regret.
marshmallow and lollipop both sucks on note 4 and once you upgraded the bootloader will be locked and you cannot downgrade back to 4.4.4.
If your device status shows custom then it means it was rooted and modified for some reasons to make it fully work out of china because N910H is chinese note 4 3g model i believe.

just pick your own country. if its not available, just pick a neighbor country.
btw.....before you try any of those, try to boot to recovery and see if TWRP is installed. if yes, good, continue by creating backup of your current rom.
if not, I suggest installing TWRP first and make a full backup.
about kitkat vs marshmellow, I'll go with MM. With MM, you got more features, you got more recent android security patch.
yes, its worse on battery. but some tweaks here and there will (almost) fixed it.

Thanks for the help
Tried installing supersu and it says its not rooted so don't know why it says device status custom haha.
Yes 910H does say its an asian model but the firmwares are not asian areas they are more like african areas? The nearest one to USA is Trinidad and Tobago i think.
Think ill just stick with 4.4.4 since I don't know what I am doing
TY

speedfox87 said:
Thanks for the help
Tried installing supersu and it says its not rooted so don't know why it says device status custom haha.
Yes 910H does say its an asian model but the firmwares are not asian areas they are more like african areas? The nearest one to USA is Trinidad and Tobago i think.
Think ill just stick with 4.4.4 since I don't know what I am doing
TY
Click to expand...
Click to collapse
Take your time to read on some threads. Just relax, no need to rush.
I have 910h myself, and I'm enjoying this device with root and xposed.
To root, get your cfautoroot. Its a simple process, just a few click here and there.
Custom status means that your knox is tripped. It means it has been successfully rooted before.
Trust me, its worth the time spent.

G900F Rom Recommendation

Hi,
I have a G900F I got in the UK and I've just moved to Canada with. Problem is it doesn't support some of the bands here so I find I often have a poor signal. I'm happy with the stock ROM but I believe if I am to open it up for all bands I need a custom ROM.
I don't need anything too flashy, but I'd like everything to work and be responsive.
In terms of the most complete ROMs it seems LineageOS Official and Resurrection Remixed are the most popular. Can anyone comment? How about Android 6 vs 7?
Thanks

Used to use resurrection but now that I've moved to lineage os I can say that its better and getting improved every update it gets

Beaksterboy said:
Hi,
I have a G900F I got in the UK and I've just moved to Canada with. Problem is it doesn't support some of the bands here so I find I often have a poor signal. I'm happy with the stock ROM but I believe if I am to open it up for all bands I need a custom ROM.
I don't need anything too flashy, but I'd like everything to work and be responsive.
In terms of the most complete ROMs it seems LineageOS Official and Resurrection Remixed are the most popular. Can anyone comment? How about Android 6 vs 7?
Thanks
Click to expand...
Click to collapse
g900f is almost identical if not the exact same as the canadian s5 g900w8.
you would need to use correct freq for your carrier, search will provide a howto. worse case scenario is to flash a canadian 6.0.1 modem from any canadian 6.0.1 stock fw

if trying to figure out connectivity, stay w/stock first as modems are from stock fw.
imo try superlite 6.0.1, it stock based and only takes a few minutes to install that way you can test out your carrier connectivity issues
https://forum.xda-developers.com/ga...-superlite-mini-mm-v1-0-361mb-g900w8-t3497158

So I can keep my stock firmware and just replace the G900F baseband (G900FXXS1CQAV) with the Bell Canada SM-G900W8 Modem and everything will be the same except the phone will work on the Bell Canada frequencies?
I had been planning to follow this guide: https://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059 to enable the 1700MHz band which is disabled on the G900F, but if flashing a Canadian modem will enable this band that sounds easiest.
Do I need to download the full 1.5GB firmware and extract the modem from it?
Thanks

Beaksterboy said:
So I can keep my stock firmware and just replace the G900F baseband (G900FXXS1CQAV) with the Bell Canada SM-G900W8 Modem and everything will be the same except the phone will work on the Bell Canada frequencies?
I had been planning to follow this guide: https://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059 to enable the 1700MHz band which is disabled on the G900F, but if flashing a Canadian modem will enable this band that sounds easiest.
Do I need to download the full 1.5GB firmware and extract the modem from it?
Thanks
Click to expand...
Click to collapse
ive never tried flashing a mdm from another model as ive never needed to for the s5.
ive not read enough to know if its possible or if it has any neg consequences.
easiest would be to change freq w/current mdm, search for samsung secret service codes to view and maybe change current freq
good place to start is here https://forum.xda-developers.com/showthread.php?t=2729694

I've done a lot of research on this forum. Most people say that installing G900W8 firmware on G900F isn't possible. Also it seems that it is the NVRAM which stores what bands are allowed on what model, so simply flashing a different modem won't make a difference.
Some people are saying that the hardware is different and this is what limits the bands, but I don't believe so, the radio/modem chip is the same version between models.
Trying to follow the link I posted earlier to change the NVRAM values after installing a custom ROM appears to be the only way. Some people say it works, and others say it only appears to work. The original thread was closed years ago so I guess I'll just need to try it and see.
Alternatively I could buy 2 phones, one W8 to use in Canada and a F to use in Europe, this seems silly though.