Should i change the CSC? Unlocked Network - Samsung Galaxy S10+ Questions & Answers

Hi. Recently i bought an S10+ and what i heard from the buyer is that the S10+ was locked on EE UK. (And after, he unlocked it)
I'm stuck on May update (SE7 EVR) so i was thinking to change the ROM to POL(Poland) for example.
It will be locked again on EE UK if i flash with Odin and change the ROM?

After the network sim unlock phone is unlocked no matter the rom.

brunotuga said:
After the network sim unlock phone is unlocked no matter the rom.
Click to expand...
Click to collapse
Thanks for the reply. I'm getting an error when i try to update: " Your current software isn't supported. Please visit a repair center"
I'm stuck on May Update. I'm thinking to switch the ROM.

Related

[Q] How can i find for what carrier my phone is?

Hello guys,
How can i find for what carrier my phone is or if is factory unlocked or not?
For the moment i use a sim card and everything works ok, but i'm afraid that i woul make an software update and my phone will be locked or relocked.
Thanxs!
You can use this app to see your phone's details
https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfo
THANX!
I used this app and show me Austria!
But the carrier no!
"Mobile Operator Name" is the carrier.
Dear Jopat
Now show me RO VODAFONE RO...
Is the carrier of my sim...
I don't know if the phone is factory unlocked or not...
sergiuhusca said:
Dear Jopat
Now show me RO VODAFONE RO...
Is the carrier of my sim...
I don't know if the phone is factory unlocked or not...
Click to expand...
Click to collapse
Whats the model number of your phone?
sergiuhusca said:
Dear Jopat
Now show me RO VODAFONE RO...
Is the carrier of my sim...
I don't know if the phone is factory unlocked or not...
Click to expand...
Click to collapse
Check your phone's active CSC, they usually have the same lock status for every phone.
Easiest method is to use another carrier sim card and test it on your unit.
gridflash i have the smg900f model
jopat...now i use my carrier...but i'm afraid if i make an update the phone will be locked,relocked...
sergiuhusca said:
gridflash i have the smg900f model
jopat...now i use my carrier...but i'm afraid if i make an update the phone will be locked,relocked...
Click to expand...
Click to collapse
No, updating the software doesn't change the carrier lock status. If it was previously locked and was unlocked, it will stay unlocked. If you will update through flashing, just be sure that you are flashing the correct software intended for your unit to avoid problems. If you flash your phone with a different firmware with locked csc, your phone will be locked.
Thx Jopat...
In the past i have a Samsung Galaxy s3 and after one update the phone relocked himself...
]Thx Jopat...
In the past i have a Samsung Galaxy s3 and after one update the phone relocked himself...
How do i know if my csc is unlocked?
sergiuhusca said:
gridflash i have the smg900f model
jopat...now i use my carrier...but i'm afraid if i make an update the phone will be locked,relocked...
Click to expand...
Click to collapse
This appears to be an unlocked International version for the EU. But the Forum Moderators checking into the update issue.
You can check http://samfirmware.com/ to find what country your CSC code was built for. This is the CSC for Austria (A1) : G900FVFG1ANE1
This senior member says the towelroot works for the G900F
http://forum.xda-developers.com/showthread.php?p=53424837&highlight=g900f#post53424837
sergiuhusca said:
]Thx Jopat...
In the past i have a Samsung Galaxy s3 and after one update the phone relocked himself...
How do i know if my csc is unlocked?
Click to expand...
Click to collapse
That's what you have to know yourself. If the network you are using has a history of locking the sim, then it's almost 100% sure that your S5 is locked. S5 was well-prepared for its distribution so the CSC of the network is surely fully configured. Look around here on XDA and take note of the firmwares they are using for modding their custom roms, that'll give you a good idea which firmware is easy to configure. You can start reading with gridflash's suggestion.
No...the s3 initialy was locked on VODAFONE UK!i UNLOCKED AND THEN,WHEN I MADE FIRST UPDATE THE PHONE RELOCKED HIMSELF.
THE S5 I BUY FROM A GUY...AND HE TELL ME THAT THE PHONE IS NEVERLOCK.
I LOOCK FOR THE CSC AND FOR THE AUSTRIA IS THE SAME FOR TELERING AND T MOBILE...
AND THE SAME CSC IS FOR AN UNKNOWN COUNTRY...
Try this website. Enter your IMEI number there.
http://iphoneimei.info/
jopat said:
Try this website. Enter your IMEI number there.
http://iphoneimei.info/
Click to expand...
Click to collapse
iS FOR IPHONE...
CSC IS TTR
WHAT COUNTRY IS TTR?
^Someone told me it works for others too. Anyway, just ignore it, there's a fee for the query when I tried it just now.
Anyway, why not just borrow or buy another carrier's sim card and try it on?
I use it with a romanian sim card VODAFONE RO!
i DON'T KNOW THE ORIGINAL CARRIER...THAT'S ALL!
sergiuhusca said:
I use it with a romanian sim card VODAFONE RO!
i DON'T KNOW THE ORIGINAL CARRIER...THAT'S ALL!
Click to expand...
Click to collapse
I'm getting very confused which info you really want to know. If you want to know the original and/or current carrier, Phone Info will give you that info as previously stated. Every other details, Phone Info will provide, only exception is the network/carrier lock status.

[Q] SM-N900T 4.4.2, rooted, region free, still region locked

I have a T-Mobile USA SM-N900T currently running [ROM][KERNEL][4.4.2-NE4][SM-N9005]CivZ_FlexKat_Rev3.5
The ROM is listed as "region free" however when I attempt to insert one2free Hong Kong prepaid SIM-card I got a 'network locked sim card inserted' error?
I can't use "Region Lock Away" as it's no-longer functional on 4.4.2 - and I can't downgrade to 4.3 because I assume my bootloader has already been upgraded.
Any solution here?
Shouldn't a "region free" ROM no longer enforce the region lock?
re: region lock
jbcholdings said:
I have a T-Mobile USA SM-N900T currently running [ROM][KERNEL][4.4.2-NE4][SM-N9005]CivZ_FlexKat_Rev3.5
The ROM is listed as "region free" however when I attempt to insert one2free Hong Kong prepaid SIM-card I got a 'network locked sim card inserted' error?
I can't use "Region Lock Away" as it's no-longer functional on 4.4.2 - and I can't downgrade to 4.3 because I assume my bootloader has already been upgraded.
Any solution here?
Shouldn't a "region free" ROM no longer enforce the region lock?
Click to expand...
Click to collapse
Check out this rom: http://forum.xda-developers.com/showthread.php?t=2487425
It is region free but it's a N9005 custom rom and it works fine with a N900T Note 3
phone. The only thing which it will lack is wifi calling.
After flashing the rom you will need to flash the wifi/nfc/bluetooth fix in recovery
in order to get the wifi working. (not wifi calling!)
Here is the link to the wifi/nfc/bluetooth fix zip file: https://dl.dropboxusercontent.com/u/45687485/Needed_Files_BT_WIFI_NFC_Flashable.zip
Good luck!
Misterjunky said:
Check out this rom: http://forum.xda-developers.com/showthread.php?t=2487425
It is region free but it's a N9005 custom rom and it works fine with a N900T Note 3
phone. The only thing which it will lack is wifi calling.
After flashing the rom you will need to flash the wifi/nfc/bluetooth fix in recovery
in order to get the wifi working. (not wifi calling!)
Here is the link to the wifi/nfc/bluetooth fix zip file: https://dl.dropboxusercontent.com/u/45687485/Needed_Files_BT_WIFI_NFC_Flashable.zip
Good luck!
Click to expand...
Click to collapse
Same results with this ROM Boots to a "Enter SIM unlock key", and "Network locked SIM inserted" screen.
I don't understand - as my understanding was the region-lock was only for the INITIAL activation of the phone in it's home market, IE it was activated at some point in the US with a US sim!?
It would figure now that it has been rooted/ROM replaced it wouldn't region lock again?
The phone did have a black-listed IMEI - but worked on roaming here with my US sim prior to porting the number to Google Voice smh
jbcholdings said:
Same results with this ROM Boots to a "Enter SIM unlock key", and "Network locked SIM inserted" screen.
I don't understand - as my understanding was the region-lock was only for the INITIAL activation of the phone in it's home market, IE it was activated at some point in the US with a US sim!?
It would figure now that it has been rooted/ROM replaced it wouldn't region lock again?
The phone did have a black-listed IMEI - but worked on roaming here with my US sim prior to porting the number to Google Voice smh
Click to expand...
Click to collapse
region free and sim lock are 2 different things.
sounds like you need the sim unlock code
I used freeunlocks.com,you have to do a trialpay thing but there may be one that suits your needs?
cost me just under £5 and I got 4 unlock codes,network,provider,sub-provider and defreeze.
my phone is now sim unlocked and sim unlock also does region lock
jbcholdings said:
I have a T-Mobile USA SM-N900T currently running [ROM][KERNEL][4.4.2-NE4][SM-N9005]CivZ_FlexKat_Rev3.5
The ROM is listed as "region free" however when I attempt to insert one2free Hong Kong prepaid SIM-card I got a 'network locked sim card inserted' error?
I can't use "Region Lock Away" as it's no-longer functional on 4.4.2 - and I can't downgrade to 4.3 because I assume my bootloader has already been upgraded.
Any solution here?
Shouldn't a "region free" ROM no longer enforce the region lock?
Click to expand...
Click to collapse
Hi,
I had the same problem with my European Note 3 when going in Israel.
The solution was to unlock the phone by using a European sim and calling somebody (for instance your voicemail) for 5 minutes or more.
Then it was unlocked...
Try it if you have an American Sim somewhere...
Hope it will help...
RaphaelBEN said:
Hi,
I had the same problem with my European Note 3 when going in Israel.
The solution was to unlock the phone by using a European sim and calling somebody (for instance your voicemail) for 5 minutes or more.
Then it was unlocked...
Try it if you have an American Sim somewhere...
Hope it will help...
Click to expand...
Click to collapse
Thank you, I'll give it a shot.
I went to a Samsung Service Center (in Hong Kong), and they told me I would have to get my "American Carrier" to unlock the phone and that they could not help me.
As I am not a customer of T-Mobile USA anymore I don't think there is much I can do- as I don't think they will help me over the phone or would have any idea what to do at a normal T-Mobile USA store.
I might try to find an American Pre-paid SIM and try that option.

UK - EE If I network-unlock a phone, can I install unlocked firmware?

I am afraid the title pretty much sums it up
I bought an S7 Edge locked on EE - if I use an IMEI/Network unlock code to use my card (vodafone), can I also use ODIN to install the official Samsung europe/unlocked firmware, or will my phone get 'relocked' on the network afterwards?
My thanks
evak2979 said:
I am afraid the title pretty much sums it up
I bought an S7 Edge locked on EE - if I use an IMEI/Network unlock code to use my card (vodafone), can I also use ODIN to install the official Samsung europe/unlocked firmware, or will my phone get 'relocked' on the network afterwards?
My thanks
Click to expand...
Click to collapse
I did this with my s7 edge which was locked on o2 when I got it. I unlocked my phone and then installed generic UK firmware using odin and all is good :good: I currently have an EE sim in my s7 edge and it works fine. Hope this helps
evak2979 said:
I am afraid the title pretty much sums it up
I bought an S7 Edge locked on EE - if I use an IMEI/Network unlock code to use my card (vodafone), can I also use ODIN to install the official Samsung europe/unlocked firmware, or will my phone get 'relocked' on the network afterwards?
My thanks
Click to expand...
Click to collapse
you can install unlocked firmware at any time.
unlocking allows you to use your vodafone sim. unlocking is permanent.
keep the unlock code in a safe place as it can be used more than once if necessary.
Yes, unlocking is permanent.

Strange boot sequence and unlock problem

I have a second hand note 3 n9005 it is verry Co fusing as on boot before rom. Use to flash up o2 however it's locked to ee I recently paid for aim unlock and have to return to store as been a problem
Why would it show o2 bloat Ware but be locked to ee?
A friend said flashing new modem may help is this possible or no reply way to network unlock in UK?
Any help is much appreciated thank you
What is the model number on download mode?
The model is showing as sm-n9005
Thanks
Carriers will use a custom csc file on a stock rom which means there could be multiple carriers with the same phone and different csc files. For instance, I have a bell phone and loaded Rogers firmware on the phone but the phone remains locked to bell.

is there a How to on Canadian Carrier Switching?

I've looked all over the forums and all the threads on carrier switching refer to switching US S8 variants to US carriers.
Can someone please explain or point me to a thread that explains how to carrier switch Canadian providers that would be fantastic. In particular I want to go from Rogers to Freedom Mobile (aka wind mobile) . My phone has been factory unlocked.
howellinmad said:
I've looked all over the forums and all the threads on carrier switching refer to switching US S8 variants to US carriers.
Can someone please explain or point me to a thread that explains how to carrier switch Canadian providers that would be fantastic. In particular I want to go from Rogers to Freedom Mobile (aka wind mobile) . My phone has been factory unlocked.
Click to expand...
Click to collapse
I can tell you from experience that freedom does not have any carrier specific features, so doing a firmware switch wont benefit you in any way I dont think.
You can however go onto sammobile and download the firmware for freedom and flash it using Odin. Again probably no real benefits. You would benefit if you were going the other way tho, as Rogers, Bell and Telus have carrier specific settings in their firmwares.
But since you are carrier unlocked, you could try a factory reset then put your freedom sim in it and boot up. It might install the freedom files. My S7 worked this way when i went from a Bell locked phone to a Koodo sim...
Edit: That link has an unlocked canadian firmware as well, you could use that firmware too.
Open the dialer and type *#243203855# then select GLW, this will change your csc to wind mobile/freedom, it'll wipe your phone..
peachpuff said:
Open the dialer and type *#243203855# then select GLW, this will change your csc to wind mobile/freedom, it'll wipe your phone..
Click to expand...
Click to collapse
Hi Peachpuff. I have an unlocked S8 phone from a Bestbuy canada marketplace seller. I tried using your code to change to the Telus CSC so I can get VOLTE but got the invalid MMI code error message. The about phone says its an SM-G950FD, and the only code the phone appears to accept is the one displaying the EMEI.
Hope you have some guidance on that ?
Thanks
starview332 said:
Hi Peachpuff. I have an unlocked S8 phone from a Bestbuy canada marketplace seller. I tried using your code to change to the Telus CSC so I can get VOLTE but got the invalid MMI code error message. The about phone says its an SM-G950FD, and the only code the phone appears to accept is the one displaying the EMEI.
Hope you have some guidance on that ?
Thanks
Click to expand...
Click to collapse
That's not a canadian s8, its an international one, so that code won't work and i doubt you'll get volte working at all.
Just enjoy your root friendly multi sim phone.

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