Database Users

Network SIM lock after flashing Official 4.4.2 Rom

Morning all,
I've installed the mexican 4.4.2 Official Kitkat build version on my Note 3 n900w8. After the install (it went flawless) I noticed I've now got a mexican boot screen (no biggie) but I'm now getting a network lock on my sim card, like the lock settings are tied to the firmware and not the modem??
I may just restore back to 4.3 from the Rogers build (I like official builds) but I'm looking for ideas on WHY this happened, also ways to avoid it.I'd love to run 4.4.2 properly without needing a SIM Unlock.
Having said that, are their any non-code unlocks for this? Or is it all code-based unlocking on this model??
Thanks All.

copper7op said:
Morning all,
I've installed the mexican 4.4.2 Official Kitkat build version on my Note 3 n900w8. After the install (it went flawless) I noticed I've now got a mexican boot screen (no biggie) but I'm now getting a network lock on my sim card, like the lock settings are tied to the firmware and not the modem??
I may just restore back to 4.3 from the Rogers build (I like official builds) but I'm looking for ideas on WHY this happened, also ways to avoid it.I'd love to run 4.4.2 properly without needing a SIM Unlock.
Having said that, are their any non-code unlocks for this? Or is it all code-based unlocking on this model??
Thanks All.
Click to expand...
Click to collapse
If you check out polish_pat's thread, it'll guide you through the flash process. What I think you have done is substituted the Mexican CSC in place of your own and locked it (I could be wrong) . --- you need to use the Rogers one, check his thread out it has the links etc in it also

Thanks a bunch! this worked perfect. I swear I searched the forum before I posted, and didn't see Polish_Pat's thread

Galaxy S4 i337m Telcel unable to SIM unlock via Service Menu

Hello guys, I have been going madness today trying to unlock my gf's Telcel Mexico Galaxy S4 i337m.
I initially tried from the stock branded rom but I couldn't pass the first page in *#0011#. So I decided to debrand it using a Samsung stock fw I337MVLUEMK6.
Unfortunately even with the debranded rom I have gotten the same result, unable pass the first page in *#0011# no matter how many times I would hit back, and the option 1 or whatever makes no difference.
At that point I stumbled upon this thread and I decided to give it a shot, however no go with this method either, probably wasn't even the point of my situation.
So at this point my questions are, is there another method beside buying an unlock code to get this phone unlocked? If anyone of you who has had luck unlocking the phone with this method would pass me it's HiddenMenu.apk, would it work if I sideload it onto my gf's S4?
Thanks

Any help??

Segnale007 said:
Hello guys, I have been going madness today trying to unlock my gf's Telcel Mexico Galaxy S4 i337m.
I initially tried from the stock branded rom but I couldn't pass the first page in *#0011#. So I decided to debrand it using a Samsung stock fw I337MVLUEMK6.
Unfortunately even with the debranded rom I have gotten the same result, unable pass the first page in *#0011# no matter how many times I would hit back, and the option 1 or whatever makes no difference.
At that point I stumbled upon this thread and I decided to give it a shot, however no go with this method either, probably wasn't even the point of my situation.
So at this point my questions are, is there another method beside buying an unlock code to get this phone unlocked? If anyone of you who has had luck unlocking the phone with this method would pass me it's HiddenMenu.apk, would it work if I sideload it onto my gf's S4?
Thanks
Click to expand...
Click to collapse
You have to flash an earlier modem to either let you get to the hidden menu or that will work with an app called RegionLock Away. AFAIK that's the only way to do it. Do a search, some people have asked and figured it out but i have the I337 so it's different for me.

DeadlySin9 said:
You have to flash an earlier modem to either let you get to the hidden menu or that will work with an app called RegionLock Away. AFAIK that's the only way to do it. Do a search, some people have asked and figured it out but i have the I337 so it's different for me.
Click to expand...
Click to collapse
Thank you for the answer.. I had somehow figured that out but I wasn't sure. On to this thread it is stated that they have achieved to successfully unlock their S4's through Hidden Service Menu with the MF3 OTA fw.
At this point my question is, can I go with the modem_CWM_I337UCUAMF3.zip(7/9/2013)(US) baseband found on this thread and flashing it over the stock fw I337MVLUEMK6 ?
As far as I know the modem_CWM_I337UCUAMF3.zip(7/9/2013)(US) baseband is a 4.2.2 while I337MVLUEMK6 is a 4.3 version, so I just want to make sure it won't brick the device.
Apart from that, the two phones should be identical right? Like I said this one is a i337m Telcel one from Mexico, while modem_CWM_I337UCUAMF3.zip(7/9/2013)(US) should be AT&T right?
Thanks

Segnale007 said:
Thank you for the answer.. I had somehow figured that out but I wasn't sure. On to this thread it is stated that they have achieved to successfully unlock their S4's through Hidden Service Menu with the MF3 OTA fw.
At this point my question is, can I go with the modem_CWM_I337UCUAMF3.zip(7/9/2013)(US) baseband found on this thread and flashing it over the stock fw I337MVLUEMK6 ?
As far as I know the modem_CWM_I337UCUAMF3.zip(7/9/2013)(US) baseband is a 4.2.2 while I337MVLUEMK6 is a 4.3 version, so I just want to make sure it won't brick the device.
Apart from that, the two phones should be identical right? Like I said this one is a i337m Telcel one from Mexico, while modem_CWM_I337UCUAMF3.zip(7/9/2013)(US) should be AT&T right?
Thanks
Click to expand...
Click to collapse
You can't flash that one, but you should be able to flash one of older ones. You are right in that that modem is for the AT&T one, and that means it actually won't work for you. You'll have to flash one that has I337M instead of I337U. Besides that, you should be good.

DeadlySin9 said:
You can't flash that one, but you should be able to flash one of older ones. You are right in that that modem is for the AT&T one, and that means it actually won't work for you. You'll have to flash one that has I337M instead of I337U. Besides that, you should be good.
Click to expand...
Click to collapse
Thanks for your reply once again.. In fact as you have said I tried the I337U AT&T version and obviously I didn't have any GSM/UMTS signal, so I went with the modem_CWM_I337MUMUAMDL.zip{5/30/2013}(Mexico) and I can finally get into the Services Menu, I can do the whole unlock process listed here, however once the phone reboots the result is the same, S4 doesn't read any different simcard beside the one it is locked on, which is Telcel.
Any idea? Is there a specific baseband version that does this trick on i337m? Additionally, is there a website where I can find all kinds of baseband versions for the i337m?
Thanks

hidden menu 0011 on MDL
hi to all, this is my first post,
a few min ago i unlock my gs4 by this CODE *#0011#.
the phone is ranning stock 4.3.
baseband I337MUMUAMDB2
build number I337MUMUEMK6
first the code doesnt work, but searching and searching and searching and searching and searching and searching and .
I got something only the telcel baseband MDL I think.
i flash it by odin but the first baseband doesnt change!!!!!! WTF....
flash it by CWM and again the first baseband doesnt change!!!!!! WTF.... AGAIN. I thought im in trouble because 350$ .
but but but, god help me to try to put in the code again *#0011#....
and WTF its work yeahhhhhhhhhhhhhhhhhhh ...
so maybe this will work for you too.... thanks to all.
GOD HELP YOU

I337m Telcel
Segnale007 said:
Hello guys, I have been going madness today trying to unlock my gf's Telcel Mexico Galaxy S4 i337m.
I initially tried from the stock branded rom but I couldn't pass the first page in *#0011#. So I decided to debrand it using a Samsung stock fw I337MVLUEMK6.
Unfortunately even with the debranded rom I have gotten the same result, unable pass the first page in *#0011# no matter how many times I would hit back, and the option 1 or whatever makes no difference.
At that point I stumbled upon this thread and I decided to give it a shot, however no go with this method either, probably wasn't even the point of my situation.
So at this point my questions are, is there another method beside buying an unlock code to get this phone unlocked? If anyone of you who has had luck unlocking the phone with this method would pass me it's HiddenMenu.apk, would it work if I sideload it onto my gf's S4?
Thanks
Click to expand...
Click to collapse
Hi, im from Tijuana i also have that smartPhone and was having the same problem, what i did and it worked for me was to install this firmware
http://www.sammobile.com/firmwares/3/?download=27549
From sammobile it is the Telcel oficial with JB 4.3 then i put my Movistar chip and it work..
Saludos...

Yeah, there's a new firmware from samsung that unlocks phones by default.
I've tested it with that exact same one.
http://www.sammobile.com/firmwares/3/?download=27549
Click to expand...
Click to collapse
I did a previous downgrade to 4.2 tho.
Using that 4.2 firmware, and the *#0011# code, didn't work for me.
So, I returned to the stock branded 4.3, placed a Movistar SIM, and boom! unlocked.
Didn't work too good because of the ugly 4.3 Telcel branded firmware, but at least it's unlocked.
After that I decided to install Goldeneye ROM, and the phone was carrier locked again.
The developer told me that a proper unlock method would be needed to achieve unlocking.
I managed to make a nandroid backup of Telcel's firmware, and Goldeneye ROM, and:
- inserted SIM different from telcel to the phone, booted into Telcel's firmware a couple of times and got it working
- flashed the Goldeneye ROM and retained the unlocking.
the only thing is:
if you ever place a Telcel SIM, the lock will return.
So far I've managed to keep it working once (2 full weeks) without problems.
Yesterday I tried to do it again, and every once in a while the SIM lock returns.
-------------
In other news, anyone knows how to flash other ROM than Telcel's and that buggy 4.2 I found?
Every single ROM I try to flash through ODIN gives me an error, and won't let me flash.
I've tried all these with no results:
I337MUMUENB1_I337MUUBENC1_TTT.zip
I9505XXUENAA_I9505YXXENA7_PHE.zip <--- thankfully that didn't let me flash, it was for a 9505 ::V
I337MVLUAMG1_I337MOYAAMG1_BMC.zip
I337MVLUEMK6_I337MOYAEMK6_PCM.zip
I337MVLUEMK6_I337MOYAEMK6_SPC.zip

Segnale007 said:
Hello guys, I have been going madness today trying to unlock my gf's Telcel Mexico Galaxy S4 i337m.
I initially tried from the stock branded rom but I couldn't pass the first page in *#0011#. So I decided to debrand it using a Samsung stock fw I337MVLUEMK6.
Unfortunately even with the debranded rom I have gotten the same result, unable pass the first page in *#0011# no matter how many times I would hit back, and the option 1 or whatever makes no difference.
At that point I stumbled upon this thread and I decided to give it a shot, however no go with this method either, probably wasn't even the point of my situation.
So at this point my questions are, is there another method beside buying an unlock code to get this phone unlocked? If anyone of you who has had luck unlocking the phone with this method would pass me it's HiddenMenu.apk, would it work if I sideload it onto my gf's S4?
Thanks
Click to expand...
Click to collapse
With stock ROM 4.4.2 Telcel I've been able to..

[Q] G900F Network registration problem after flashing

Hi I have international version of S5 G900F. I flashed the phone with UK BTU stock rom. Now the problem is I cannot connect to the Network.
I tried going to Settings->More Networks -> Network Operators -> Select automatically . It took 5-10 mins to search but cannot connect.
Sim is not locked as it was working before I flashed the stock rom. also I read somewhere in internet that once the phone is region unlocked, it is permanently unlocked to use any other country sim. I don't know the original region of my phone but I bought it in Uk from 3rd party dealer not from any carrier.
I can think of two thing at the moment. It should be either regional locked again, but it does not prompt any thing to activate or enter pin or anything like that. or it should be wrong modem.
Is there a way to find if the phone is region locked ?
and is there a way to find correct region of the phone ?
the label on the box was removed so I cannot find from the box as well.
Thanks in advance.

I still haven't fixed this problem. Could someone suggest how to fix?

I've attached some screenshots with my phone info.
first image shows NETWORK:UNBLOCKED and IMEI Certi: PASS
-> I think this means, the phone is not blocked by network, and IMEI certificate has passed so it's not stolen or lost claimed phone.
another screenshot is the Firmware and CSC code/country information,
-> this means, this phone is build to sell in UK, so UK sim should unlock the regional lock.
Also the phone was working fine before I installed stock rom which I dowloaded from sammobile.
in the sceenshot, one of the network is connected but it says emergency call only because it cannot register to the network.
It is not sim lock also, because when I put T-mobile sim it does not ask for pin to unlock also.
what is wrong here. any idea guys? xda supposed to be the biggest android forum and samsung s5 is one of the most popular phone at the moment, isn't there anyone who have similar problem and solved? or atleast give some reason this cannot be fixed at all.

does the TMobile sim work? does it register with the network? If yes, then call the provider (of the other sim) and ask what's going on. Maybe you have a broken sim?

blesio said:
does the TMobile sim work? does it register with the network? If yes, then call the provider (of the other sim) and ask what's going on. Maybe you have a broken sim?
Click to expand...
Click to collapse
I've tried with Orange sim, and it still cannot register to the network. When I put the orange sim, it pop up a dialogbox asking to choose a network provider, there was two options, T-mobile and orange. So it is detecting the sim, but it cannot register.
And also, I tried my sim in another phone, and my sim works in another phone without any problem.

Did you try to flash the firmware again, and then after that restore factory defaults?

blesio said:
Did you try to flash the firmware again, and then after that restore factory defaults?
Click to expand...
Click to collapse
Yes I did, still it didn't work. I emailed samsung customer service with the problem, and they asked me to restore factory defaults.
I did that again but didn't work.
I tried one custom ROM as well. same problem in that rom.

You're rooted? If yes then there might be problem with the modem part of the ROM, can you install the official one part ROM and try with that?

blesio said:
You're rooted? If yes then there might be problem with the modem part of the ROM, can you install the official one part ROM and try with that?
Click to expand...
Click to collapse
I've installed stock rom several times, and several different versions( from here: http://www.sammobile.com/firmwares/1/?model=SM-G900F&pcode=0 ). Rooted several times, installed modem.bin files several times from many custom rom/ stock rom. None of them worked. I tried installing modem.bin when not rooted as well. And all the attempt failed.
I did everything I could possibly think of , Then I posted the question in the forum.

You have the IMEI ??!? Or it is lost?? Then only per efs-backup…
Or sim is broken…
Gesendet von meinem SM-G900F

lwiss said:
You have the IMEI ??!? Or it is lost?? Then only per efs-backup…
Or sim is broken…
Gesendet von meinem SM-G900F
Click to expand...
Click to collapse
I have imei , and sim is working fine, as I tested my sim in another phone.

uktel3315 said:
I have imei , and sim is working fine, as I tested my sim in another phone.
Click to expand...
Click to collapse
I'm having the same problem, but with G900H. I have stock firmware, rooted and everything's working fine until suddenly, I have no network. I restart the phone and get network again but only for a couple of minutes.
Sent from my SM-G900H using XDA Free mobile app

Any update?

XanoZuke said:
Any update?
Click to expand...
Click to collapse
Sry XanoZuke, I could not do anything to fix this, so I returned the phone and got another handset. I now have Exynos Octa-core version. Found snapdragon version is more power efficient. My phone gets heated very quickly.

uktel3315 said:
Sry XanoZuke, I could not do anything to fix this, so I returned the phone and got another handset. I now have Exynos Octa-core version. Found snapdragon version is more power efficient. My phone gets heated very quickly.
Click to expand...
Click to collapse
Don't worry, I found out that the motherboard was water damaged (the irony of life....), so a bought an LG G3.
Regarding the Exynos chip, I'm never buying anything exynos ever again. The performance is not as solid as Snapdragon and it gets heated really fast. Still, thanks for your reply! ?
Sent from my LG-D855 using XDA Free mobile app

uktel3315
Click to expand...
Click to collapse
So sad case remain unsolved, Got almost the same issue, Flashed 1st and last official firmware and custom rom without success NO NETWORK SIGNAL. No IMEI - Null regitered 15 zeros no efs backup etc.
Model : SM-G900S
ROM: XtrStoLite

edreab86 said:
So sad case remain unsolved, Got almost the same issue, Flashed 1st and last official firmware and custom rom without success NO NETWORK SIGNAL. No IMEI - Null regitered 15 zeros no efs backup etc.
Model : SM-G900S
ROM: XtrStoLite
Click to expand...
Click to collapse
have you found a solution yet? i have the exact same problem and have tried the same solutions as you listed...

have you found a solution yet? i have the exact same problem and have tried the same solutions as you listed...
Sorry i end up selling the phone as is..

Same deal
My g900f has no mobile services sims fine

I have the same problem.
Cannot connect to network after flashing new ROM. Since then I tried about 10 different original roms and couple custom roms. Number of different MODEMs and BOOTLOADERs but with no joy. SIM card works fine in different phone.
Also I tried to load different CERT files and QCN with Z3X Box but that didn't help either.
I've tried *#0011# command here are results:
with LTE/WCDMA/GSM auto-connect:
imgur.com/i69HCBM
with WCDMA only:
imgur.com/QPbvKHG
and GSM only:
imgur.com/8InhQWQ
It seems that GSM is not working at all.
At this stage I run out of ideas and probably gonna get rid of the phone as it is or use it as pimped-out ipod touch
(sorry for messed up links but I can't post to outside sites yet)

[Q] N9005 "Not registered on network" after regional unlock. PLEASE HELP!

Good day, I have N9005 from UK but Iam from Middle East.
Because code for regional unlock doesn't work for me I gave my phone to the phone lab where they just changed my IMEI. After that everything was fine, until I decided to flash another rom (Knox already 0x1,so its doesn't matter).
Because I want new Modem I flashed first last Finland 4.4.2 and after that custom rom and changed cellular operator and sim card.
Now I see "Not registered on network" on Note 3 when on my N7100 this sim works perfect.
In Download Mod I have this info (attached).
What I should do now? I tried to find info about it, but nothing.
Thanks in advance for any help.

Shigaon said:
Good day, I have N9005 from UK but Iam from Middle East.
Because code for regional unlock doesn't work for me I gave my phone to the phone lab where they just changed my IMEI. After that everything was fine, until I decided to flash another rom (Knox already 0x1,so its doesn't matter).
Because I want new Modem I flashed first last Finland 4.4.2 and after that custom rom and changed cellular operator and sim card.
Now I see "Not registered on network" on Note 3 when on my N7100 this sim works perfect.
In Download Mod I have this info (attached).
What I should do now? I tried to find info about it, but nothing.
Thanks in advance for any help.
Click to expand...
Click to collapse
To unlock your phone may they flashed Super IMEI now after you change ROM may it replaced with original IMEI or Generic, I think u need to go that shop again to flash Super IMEI, look at below link.
http://forum.xda-developers.com/showpost.php?p=50669735&postcount=8

jdomadia said:
To unlock your phone may they flashed Super IMEI now after you change ROM may it replaced with original IMEI or Generic, I think u need to go that shop again to flash Super IMEI, look at below link.
http://forum.xda-developers.com/showpost.php?p=50669735&postcount=8
Click to expand...
Click to collapse
Thanks, I will try. One question, if its work with adb, I can't do this on PC?

Shigaon said:
Thanks, I will try. One question, if its work with adb, I can't do this on PC?
Click to expand...
Click to collapse
No, Its required SPT Box.

SM-G900R4 - US Cellular Galaxy S5 Unlock

Hello everyone,
Sorry if this was posted already - I am typing this up in between other projects and I wanted to put something out here so I wouldn't forget. This last weekend, I purchased a used Galaxy S5 CDMA phone branded by US Cellular. I searched and searched for a way to unlock it but I was not able to find anything that worked for me. My phone is currently running Android 4.4.2 and none of the *# dial codes would do anything for me. Finally I was near a local US Cellular today so I brought my phone in and they unlocked the SIM for me so I can use it with other carriers. I haven't had a chance to go through the phone yet after the unlock, but I plan on looking at it tonight when I get home to find out if I can figure out how it was unlocked so I can share that info with anyone on the site who would like to unlock their SM-G900R4. I'm hoping that during their unlocking process, the hidden menus were left visible so I can look at the phone's file structure. I'll report back as soon as I know more.

pellet said:
Hello everyone,
Sorry if this was posted already - I am typing this up in between other projects and I wanted to put something out here so I wouldn't forget. This last weekend, I purchased a used Galaxy S5 CDMA phone branded by US Cellular. I searched and searched for a way to unlock it but I was not able to find anything that worked for me. My phone is currently running Android 4.4.2 and none of the *# dial codes would do anything for me. Finally I was near a local US Cellular today so I brought my phone in and they unlocked the SIM for me so I can use it with other carriers. I haven't had a chance to go through the phone yet after the unlock, but I plan on looking at it tonight when I get home to find out if I can figure out how it was unlocked so I can share that info with anyone on the site who would like to unlock their SM-G900R4. I'm hoping that during their unlocking process, the hidden menus were left visible so I can look at the phone's file structure. I'll report back as soon as I know more.
Click to expand...
Click to collapse
Just a quick follow up... I didn't have a chance to go through my phone extensively last night, but I did see something that may or may not be of interest. When I got my phone back after being unlocked, there was an icon for mceFramework. When I clicked on it, it ran in the upper corner of the phone and when I swiped down it said it would be uninstalled. From what I have read about it, it has really nothing to do with the unlocking of the phone though.
Depending on what time I get home tonight will determine if I get to really dig into the phone tonight or not. I'm hoping there is something I will be able to find that will be useful. The US Cellular phone is a bit different though, as I mentioned before regarding the *# codes... No matter what *# codes I try, they do not work... even something as simple as *#060# does nothing on my phone - even after being unlocked. If I find something, I'll report back.

pellet said:
Just a quick follow up... I didn't have a chance to go through my phone extensively last night, but I did see something that may or may not be of interest. When I got my phone back after being unlocked, there was an icon for mceFramework. When I clicked on it, it ran in the upper corner of the phone and when I swiped down it said it would be uninstalled. From what I have read about it, it has really nothing to do with the unlocking of the phone though.
Depending on what time I get home tonight will determine if I get to really dig into the phone tonight or not. I'm hoping there is something I will be able to find that will be useful. The US Cellular phone is a bit different though, as I mentioned before regarding the *# codes... No matter what *# codes I try, they do not work... even something as simple as *#060# does nothing on my phone - even after being unlocked. If I find something, I'll report back.
Click to expand...
Click to collapse
Any luck figuring this one out? I've been told that my phone is unlockable, but I have to take it to a US Cellular store. The closest one to me is 28 hours away I'd love to fix this myself. Thanks!

Hey same problem here. I will pay someone to help me please... [email protected]

clcherryrun said:
Hey same problem here. I will pay someone to help me please... [email protected]
Click to expand...
Click to collapse
I am looking for help in this as well. Has anyone found the solution ? Getting to a US Cellular store is a problem for me as well .

To be able to dial the codes *#,
1- dowload root browser.
2- click on to efs folder
3- carrier folder
4-hiddemenu
5-click on open as
6-text file
7-RB text editor
8- change off to on.
9-Save ( top right icon to the left of SIZE ).

Found a couple apps earlier this evening that work well
Short cut master lite
And
Phone info samsung 3.3.10
Give every bit of info you would need to know and have temp read outs also
The US cellular unlocker is not available through Sammobile. Com. They have are handing people to us cellular for the unlocker
Its. CDMA, and i guess samsung does not run cdma based software.
SAMSUNG does have everything else though.
Firm ware
Odin 3.7.10
Keies
Etc
---------- Post added at 03:59 AM ---------- Previous post was at 03:51 AM ----------
Ok ended that last post in haste
Those apps i listed will also reveal alll hidden commands and menus
There is a command one of them gives you to input into the dialer window,
*#0011#
Then press menu, back, menu,
Key in Q0 or Q0000
Then hit ok
This stated it did not need root permission to perform this

Could u please help me unlock my us cellular samsung galaxy s5 cdma phone its Model number is sm-g900r4

it works just on s6 s6 edge

Anyone got there s5 unlocked yet.....?

Hello, I came across this thread and just thought I'd share how I was able to unlock my Galaxy s5 Mini (US Cellular). I tried just about everything, but what finally worked was simply flashing the stock rom which can be found at the sammobile site. Use 'Odin', instructions included on the website.

1.21jigawatts said:
Hello, I came across this thread and just thought I'd share how I was able to unlock my Galaxy s5 Mini (US Cellular). I tried just about everything, but what finally worked was simply flashing the stock rom which can be found at the sammobile site. Use 'Odin', instructions included on the website.
Click to expand...
Click to collapse
Stock rom? like from a tmobile s5? Please clarify.

besusanameeva said:
Stock rom? like from a tmobile s5? Please clarify.
Click to expand...
Click to collapse
Hello -- stock rom by model number. I think in most cases this is just stock Android for the carrier of specified model, minus bloatware and network lock. Well, I correct myself -- there may be some bloatware, but certainly less than what was there after performing the factory reset. The link to 'sm-g900r4' rom is at sammobile(dotcom), firmwares, search for model number -- and download latest version.
In my case, phone model is 'sm-g800r4' (US Cellular). Everywhere I looked online suggested that I had to contact US Cellular and request instructions for unlocking, but they will only do this if you have the original sim card. So, I finally flashed the stock rom using Odin, following very basic instructions (included on the rom site). After flashing, I still had the US Cellular splash screen, but my verizon sim suddenly worked with the device. Next step for me -- root and replace that ugly US Cellular splash screen with the gorgeous lollipop boot animation. Very nice.
If you need assistance with specific instructions let me know, and I can provide a quick summary.

Simple instructions, great site to join for US Cell users.
http://teamuscellular.com/Forum/topic/9019-how-to-root-s5-on-601/

Help Please
1.21jigawatts said:
Hello -- stock rom by model number. I think in most cases this is just stock Android for the carrier of specified model, minus bloatware and network lock. Well, I correct myself -- there may be some bloatware, but certainly less than what was there after performing the factory reset. The link to 'sm-g900r4' rom is at sammobile(dotcom), firmwares, search for model number -- and download latest version.
In my case, phone model is 'sm-g800r4' (US Cellular). Everywhere I looked online suggested that I had to contact US Cellular and request instructions for unlocking, but they will only do this if you have the original sim card. So, I finally flashed the stock rom using Odin, following very basic instructions (included on the rom site). After flashing, I still had the US Cellular splash screen, but my verizon sim suddenly worked with the device. Next step for me -- root and replace that ugly US Cellular splash screen with the gorgeous lollipop boot animation. Very nice.
If you need assistance with specific instructions let me know, and I can provide a quick summary.
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Hey man I have the GALAXY S5 SM-G900R4. I want to make sure it is unlocked for any network for when I travel.
Can you provide a walk through on what you did, what are the steps, I'm new to this I have no experience but I can follow instructions. Also how can I know if this phone is CDMA or GSM ?? I Opened it and it has the Sim Card Slot, Hopefully it is GSM which is what I need. Please help. Thank you very much.

prome002 said:
Hey man I have the GALAXY S5 SM-G900R4. I want to make sure it is unlocked for any network for when I travel.
Can you provide a walk through on what you did, what are the steps, I'm new to this I have no experience but I can follow instructions. Also how can I know if this phone is CDMA or GSM ?? I Opened it and it has the Sim Card Slot, Hopefully it is GSM which is what I need. Please help. Thank you very much.
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Sorry to be the bearer of bad news but if you don't already know the us cellular brand is CDMA service

Cdarin1121 said:
Sorry to be the bearer of bad news but if you don't already know the us cellular brand is CDMA service
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sorry to tell u but device is capable of receiving at least att cdma and ltes bands just not gsm the device can be unlocked just wont support everyone i am working on unlock as we speak and will figure this out

prome002 said:
Hey man I have the GALAXY S5 SM-G900R4. I want to make sure it is unlocked for any network for when I travel.
Can you provide a walk through on what you did, what are the steps, I'm new to this I have no experience but I can follow instructions. Also how can I know if this phone is CDMA or GSM ?? I Opened it and it has the Sim Card Slot, Hopefully it is GSM which is what I need. Please help. Thank you very much.
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Did you ever figure out a way to unlock your phone?