I just received my Samsung S23 Ultra SM-S918U1 direct from Samsung.
Engineering mode (*#0011#) was unlocked and worked out of the box as did all other dialer codes.
Once I inserted my Verizon Wireless sim, the phone self provisioned and downloaded SAOMC_SM918U1_OYM_VZW_13_0014_VZW/VZW,XAA/XAA carrier settings.
Now none of the dialer codes work even if the sim is ejected and a factory reset performed. Is there anyway to restore them that they will stick with Verizon carrier settings?
Did you try sim from different provider?
SamFw Tool 4.7.1 - Remove Samsung FRP one click
Hi Today, we introducing SamFw FRP Tool version 4.7.1 Main function: Remove FRP with one click Change CSC with one click Remove FRP for new se...
samfw.com
It has a function that enables secret code for Verizon CSC
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I really need some help, I recently purchased a SM-G925W8 S6 Edge from Kijiji. It seems to be locked to the Rogers/Fido network, has fido apps and works with my rogers sim card.
I have tried to buy an unlock code with the IMEI # but I was told there are no codes in the database for my IMEI.
Am I stuck with rogers :/???
Try Cellunlocker, that's who i used
Yeah, there is no unlock code in the database for my IMEI :/
Why would that be?
F4R3R said:
Yeah, there is no unlock code in the database for my IMEI :/
Why would that be?
Click to expand...
Click to collapse
Hmmm do the imei on the label, under the battery, and what shows up under about phone in settings both match up?
I have tried multiple vendors including the ones suggested above with no luck. I have never had this problem unlocking any device before.
Does anyone have some other way to unlock my device? My phone is basically useless to me if I cannot unlock it...
Why would there be no codes available to me?
Thanks.
Hi
I uploaded lineageOS and that was OK but when the user wanted to change SIM to another company she found that it was sim locked. She got the codes from EE but they don't work, properly because it is lineage now. So now I am searching for a firmware for a I9305XXUFOA1, no trace of it on the internet, what can I do ?. I found a I9305XXUFOC1 will that do the trick. I am guessing that if I put the ORG firmware back it will bee possible to unlock the phone.
Hope there is anyone out there who can help. Thanks.
Yes, you need to be running a stock dialler in order to enter the unlock code.
The OC1 should work.
Agreed, oc1 will do fine so long as it matches the carrier code. The last 3 digits are version numbers.
The dialer isn't what is needed to sim unlock the phone. You put the sim card in from another carrier and you'll get a prompt for a network code. When selecting the field you get a number pad to enter the code.
The carrier isn't contacted at any point as the code is the decryption key for the simlock in nvdata on the 'nand'.
Not chastising you, just passing on knowledge..
Ps, only stock firmware can interface with the unlock procedures of any device.
Beamed in by telepathy
A stock dialler is required to enter a network unlock code for a Samsung phone. A Samsung phone running a custom non-TW based ROM cannot be used to enter and validate a network unlock code in my experience.
Thanks a lot for your answers, I will go for the I9305XXUFOC1.
I purchase a like-new condition Samsung Galaxy S9+ phone from Amazon Warehouse for international travel coming up in couple days. I figured I would have a better chance of getting an authentic phone from Amazon than from ebay sellers. I received the phone yesterday, and here is the situation with the phone:
- The box of the phone says "unlocked by Samsung"
- The sticker on the back of the phone has the model # SM-G965UZBAXAA and IMEI number of a factory unlocked phone
- The actual IMEI of the phone however shows model # SM-G965UZBAATT, which corresponds to the AT&T carrier locked phone
- When I turn on the phone, it shows T-mobile screen and has T-mobile apps on it
How do I determine whether this is a AT&T phone, or a T-mobile phone or something else? Unfortunately, I do not have either TMO or ATT sim cards that I can use to check which network the phone works on. How do I know whether this phone is unlocked and if it is will work internationally? I am not sure how to explain the imei of the phone coming up with ATT model number, yet the phone shows TMO screen.
Please help as I need to get this resolved today, and don't have time to purchase another phone. Thanks much in advance!!
prince_a1 said:
I purchase a like-new condition Samsung Galaxy S9+ phone from Amazon Warehouse for international travel coming up in couple days. I figured I would have a better chance of getting an authentic phone from Amazon than from ebay sellers. I received the phone yesterday, and here is the situation with the phone:
- The box of the phone says "unlocked by Samsung"
- The sticker on the back of the phone has the model # SM-G965UZBAXAA and IMEI number of a factory unlocked phone
- The actual IMEI of the phone however shows model # SM-G965UZBAATT, which corresponds to the AT&T carrier locked phone
- When I turn on the phone, it shows T-mobile screen and has T-mobile apps on it
How do I determine whether this is a AT&T phone, or a T-mobile phone or something else? Unfortunately, I do not have either TMO or ATT sim cards that I can use to check which network the phone works on. How do I know whether this phone is unlocked and if it is will work internationally? I am not sure how to explain the imei of the phone coming up with ATT model number, yet the phone shows TMO screen.
Please help as I need to get this resolved today, and don't have time to purchase another phone. Thanks much in advance!!
Click to expand...
Click to collapse
put any sim in it and it should work these phones are multi carrier means all the us models are the same if its att imei id say its unlocked since obviously last used was t mobile but if you put any sim in it other than att it should accept it and not say unnsuported sim and or ask for unlock code
to further this as i said the us models are all the same. They have a file called CSC which determines carrier based settings you can put in a tmobile sim and it will repersonalize for tmobile then swap to att and att will show up..
Its the way of the future and actually quite nice as one firmware pretty much covers all carriers other than specific user data which is that carriers apps
it may be unlocked obviously the listing was wrong but xaa is factory unlocked for sims, You can reflash xaa if it is unlocked for non carrier branding,But id put any sim in and see
TheMadScientist said:
They have a file called CSC which determines carrier based settings you can put in a tmobile sim and it will repersonalize for tmobile then swap to att and att will show up..
Click to expand...
Click to collapse
Thanks for your response. So if the previous owner put a T-mobile sim in the AT&T phone, then would it show the T-mobile screen at startup, and also have the T-mobile branded apps?
prince_a1 said:
Thanks for your response. So if the previous owner put a T-mobile sim in the AT&T phone, then would it show the T-mobile screen at startup, and also have the T-mobile branded apps?
Click to expand...
Click to collapse
Yes the csc files are multi carrier the phone will do a New sim inserted please reboot to apply new carrier configuration
and it will reboot and install the inserted sims carrier based bloat apps
TheMadScientist said:
Yes the csc files are multi carrier the phone will do a New sim inserted please reboot to apply new carrier configuration
and it will reboot and install the inserted sims carrier based bloat apps
Click to expand...
Click to collapse
Thanks again! Is it safe for me to do a factory reset on the phone? I wasn't sure if it was rooted and whether a factory reset might brick it. If I do a factory reset, what would it restore to - the AT&T or TMO configuration, or something else?
prince_a1 said:
Thanks again! Is it safe for me to do a factory reset on the phone? I wasn't sure if it was rooted and whether a factory reset might brick it. If I do a factory reset, what would it restore to - the AT&T or TMO configuration, or something else?
Click to expand...
Click to collapse
Yes its safe go into settings and account backup restore it should show factory data reset Thats the proper way to get rig of a google account on the device It will stay as is until a new sim is inserted factory resets have nothing to do with it
TheMadScientist said:
Yes its safe go into settings and account backup restore it should show factory data reset Thats the proper way to get rig of a google account on the device It will stay as is until a new sim is inserted factory resets have nothing to do with it
Click to expand...
Click to collapse
Thank you so much for the information! Highly appreciated!!
TheMadScientist said:
Yes the csc files are multi carrier the phone will do a New sim inserted please reboot to apply new carrier configuration
and it will reboot and install the inserted sims carrier based bloat apps
Click to expand...
Click to collapse
I downloaded the phoneinfo app, and here it what it shows:
Firmware's CSC code: XAA
Active CSC code: TMB
IMEI check shows model ending in: ATT
That made me highly confused as to whether this was a AT&T phone, a T-mobile phone or whether it was originally sold as factory unlocked.
prince_a1 said:
I downloaded the phoneinfo app, and here it what it shows:
Firmware's CSC code: XAA
Active CSC code: TMB
IMEI check shows model ending in: ATT
That made me highly confused as to whether this was a AT&T phone, a T-mobile phone or whether it was originally sold as factory unlocked.
Click to expand...
Click to collapse
So originally it was a att device. Who ever used it used it on tmobile but on xaa which is debloated unlocked
TheMadScientist said:
So originally it was a att device. Who ever used it used it on tmobile but on xaa which is debloated unlocked
Click to expand...
Click to collapse
Under Service Provider SW ver., it shows TMB/XAA/ATT
I am trying to understand what this means, why would it show TMB, XAA and ATT? Does it mean the phone was originally AT&T, then someone installed XAA firmware on it and used it on T-mobile. If that is true, is there a way for me to verify whether the current installed firmware is XAA?
prince_a1 said:
Under Service Provider SW ver., it shows TMB/XAA/ATT
I am trying to understand what this means, why would it show TMB, XAA and ATT? Does it mean the phone was originally AT&T, then someone installed XAA firmware on it and used it on T-mobile. If that is true, is there a way for me to verify whether the current installed firmware is XAA?
Click to expand...
Click to collapse
That is correct. You see it now. The third csc code is the original device. The second is what csc you have running. And the first is or was sim inserted.
Look in settings about phone and software info. At the bottom somewhere it should show you
TheMadScientist said:
That is correct. You see it now. The third csc code is the original device. The second is what csc you have running. And the first is or was sim inserted.
Look in settings about phone and software info. At the bottom somewhere it should show you
Click to expand...
Click to collapse
Yes, what I pasted above is from about phone->software info. It shows the service provider sw version as TMB/XAA/ATT. Thank you!!
Hello,
I have a SIM unlocked S21 from Xfinity Mobile that I'm now using on Verizon Wireless. I need to change the CSC to VZW, anyone know how? I tried all the dialer codes, and also SamKEY but no luck so far.
SamKEY says "unsupported firmware, please downgrade your firmware".
Since January 2021, it's not easy to change CSC, some people do it by flashing firmwares then block whatever app checks SIM & CSC compatibility.
You can check this thread if you're into action.
Thanks, I tried that but somehow it ignores that the VZW SIM card is VZW, and it keeps the CSC as CCT/CCT/CCT.
Even putting in an AT&T sim card, it still keeps it as CCT/CCT/CCT. The carrier name is stuck as "Xfinity Mobile" also, no matter the SIM.
I wish Samsung would implement the "BYOD" thing already for this phone.. Or maybe SamKEY will work eventually...
What's interesting is that it changes the APN to the correct one automatically for the 3 SIM cards I've tried (VZW, CCT, ATT)
Firmware bug I guess, or Samsung has not yet fully implemented the "BYOD" feature referenced here:
Move your Galaxy phone to a different service carrier
If you unlock your phone to use with another carrier, it's easy to take advantage of all your new carrier's features without losing any of your data.
www.samsung.com
UPDATE: SamKEY worked!!
I was able to change the CSC to the correct carrier!
quadrun1 said:
UPDATE: SamKEY worked!!
I was able to change the CSC to the correct carrier!
Click to expand...
Click to collapse
how many credits do I need to change CSC?
On the samkey page it says that you need 8 credits
No, if I remember correctly it's only 1 credit to change the CSC.
See here:
https://www.reddit.com/r/GalaxyS21/comments/lm0at9
How to carrier unlock OnePlus Nord n200 T-Mobile (DE2118) to international because I want to use it with other country carrier
@mobbdepp
See here https://forum.xda-developers.com/t/ihave-op-n200-tmobile-iwant-to-unlock-it.4329369/
Mobbdepp free unlock service thread is closed
Hi @Nautical10, were you able to unlock your N200?
Actually i am not sure In phone settings about option it shows device is locked but
When i opened engineer mode (type *#899# in dialer) and run sim test in manual test option it shows device is unlocked screenshots are attached
Nautical10 said:
Actually i am not sure In phone settings about option it shows device is locked but
When i opened engineer mode (type *#899# in dialer) and run sim test in manual test option it shows device is unlocked screenshots are attachedt
Click to expand...
Click to collapse
Thank you for the information, mine also shows "unlocked" in the engineer mode. I guess we need to try with another carrier
When insert other carrier sim that carrier toolkit app appears in apps but no signal
Also my phone imei is blocked
So i don't know whether there are no signals due to carrier lock or imei block