Database Develop

[Q] Stock Note 3 lose Unlock after Sent back to Repair

Hi to all
I have a Stock AT&T Note 3 on KitKat, And I bought the unlock code from a website and the Code was working fine
I sent my phone to the Samsung repair center in TX to fix the memory card slot problem.
After a week they sent the phone back to me, and Of course the phone is back to the original settings
When I turned on the phone and inserted my T-mobile Sim card, the phone is asking me for the network
unlock code, so I entered the same code that I used before and it is not working ...
Thanks

You probably didn't get the exact phone you sent them. They probably sent a different one. Check for an old receipt, or the original box for the imei code. See if it's different then the new one. It most likely is. If it is, you will need to obtain a new unlock code.

I checked the IMEI number and they matched
I also thought of that it might have to do with the unlock code
so I ordered another Unlock code from a different site
and it turned out to be the SAME Unlock code from the other site !!

Yes there's only 1 unlock code per imei. It doesn't matter where you obtain the code, it will be the same.
I hate to tell you this, but you'll need to contact the warranty dept and probably send the phone back. Again :'(

440bro said:
Yes there's only 1 unlock code per imei. It doesn't matter where you obtain the code, it will be the same.
I hate to tell you this, but you'll need to contact the warranty dept and probably send the phone back. Again :'(
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Do you think this has anything to do with the Region lock restriction ?

No I don't believe it to be related to region lock.
Check one more thing for me please. Verify that the imei of the phone is what you believe it to be. Open settings and in "about phone" check under status and verify the imei is what you think it is. You can also Press * # 0 6 # on your keypad, Press 'Call' or 'Send' as if making a call. Your IMEI number will be retrieved and displayed on your screen.

440bro said:
No I don't believe it to be related to region lock.
Check one more thing for me please. Verify that the imei of the phone is what you believe it to be. Open settings and in "about phone" check under status and verify the imei is what you think it is. You can also Press * # 0 6 # on your keypad, Press 'Call' or 'Send' as if making a call. Your IMEI number will be retrieved and displayed on your screen.
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Yea.. they are the same.. I still have the original box and they matched !!
I am contacting Samsung right now, let see what they can do about it

Ok, keep us posted please. And good luck!

440bro said:
Ok, keep us posted please. And good luck!
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Click to collapse
do you know anything about this ?
NOTES: If you have a Samsung Galaxy S3, S4, Note 2, Note 3 or your Android version is Android 4.4 (KITKAT): All SAMSUNG devices manufactured after the date of JULY 2013 and Samsung devices running on Android version is Android 4.4 (KITKAT) are subject to REGION LOCKING. If your phone has been used previously with the original carrier, this will not apply to you. However, if your device is BRAND NEW, your must activate it with the original carrier. If your Samsung device becomes Region locked, you will not be able to fully factory Unlock your Samsung devices so it can be used internationally. Even the correct code will not work anymore. In order for your Samsung device NOT to be region locked, you MUST activate (FIRST USE) your S3, S4, NOTE 2, NOTE 3 with your ORIGINAL carrier at least ONCE to take your region lock OFF. After your Region lock is off, you can Sim Unlock your device via Unlock Code. All Canadian Carriers are NOT subject to Region Locking. All USA and European Carriers ARE subject to Region Locking. Region lock is removed automatically after you activate your device with its original carrier. Make some calls before unlocking. (Insert an active original sim card into the device and make a few calls to activate the phone and bypass the region lock. Once you've activated the phone, you can input the unlock code.)

Well after reading that I'm amazed. I believed region lock was based on where you lived and used the phone. Like a person in Europe couldn't use an at&t phone overseas until it was used in the states. I was unaware a person in the U.S. had to do the same if they were using it in the U.S. but with a different carrier. My apologies.
You wouldn't happen to know anyone on at&t would you? Maybe a Samsung rep in bestbuy can help you with borrowing an at&t sim and making a call or 2 on your phone.

440bro said:
Well after reading that I'm amazed. I believed region lock was based on where you lived and used the phone. Like a person in Europe couldn't use an at&t phone overseas until it was used in the states. I was unaware a person in the U.S. had to do the same if they were using it in the U.S. but with a different carrier. My apologies.
You wouldn't happen to know anyone on at&t would you? Maybe a Samsung rep in bestbuy can help you with borrowing an at&t sim and making a call or 2 on your phone.
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I tried to use someone's ATT sim and it doesnt work
Also Samsung is telling me that "as you have unlocked the device from third party site , and this is not considered as official unlock for the device"
I might bring the phone to bestbuy and let them check it out.. since the phone is still under Warranty

There's defiantly something wrong if an at&t sim doesn't work. Are you the original owner? If not do you know the original purchaser? It could have been blacklisted.

440bro said:
There's defiantly something wrong if an at&t sim doesn't work. Are you the original owner? If not do you know the original purchaser? It could have been blacklisted.
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The phone is working Fine with an ATT sim card, it has signals
it is just that it is not working after I inserted my tmobile sim card
and entered in the unlock code... So the imei should be fine !

I believe you need approximately 5 to 15 minutes of use on an at&t sim card from my previous readings of other user experiences.

440bro said:
I believe you need approximately 5 to 15 minutes of use on an at&t sim card from my previous readings of other user experiences.
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Will try that out.. I am running out of solutions !!

SM-G800F not registered on network, what can i do?

Hello, my S5 mini has the first problems 1 year after bought, sometimes there was the error not registered on network. I have sent it twice to the support, but it was returned with "no error".
Now warranty over i have the error not registered on network, and can not use it for telefoning. The IMEI was correct, i can receive the network, but i can not register to it. I have the last marshmallow update flashed over OTA.
in former times, i have to remove the sim and reinsert it, to get it work again, but now this does not work. The simcard ist changed from the provider, and i bouhgt another simcard from another networkk, to test it.
Can i fix this problem?

Garfield62 said:
Hello, my S5 mini has the first problems 1 year after bought, sometimes there was the error not registered on network. I have sent it twice to the support, but it was returned with "no error".
Now warranty over i have the error not registered on network, and can not use it for telefoning. The IMEI was correct, i can receive the network, but i can not register to it. I have the last marshmallow update flashed over OTA.
in former times, i have to remove the sim and reinsert it, to get it work again, but now this does not work. The simcard ist changed from the provider, and i bouhgt another simcard from another networkk, to test it.
Can i fix this problem?
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Sam here, call me cynical but happened 6 months after phone ran out of warranty. Done all the basics, diff SIM from different provider reset phone, even re-flashed phone and no joy, tried all the modem software going and phone will only work on 2G. Samsung support said take it to repairers hmmm wonder what that's going to cost. New phone, New manufacturer I think. This is 2nd Samsung ive had issues with

I've only just got my first Android phone from a mate after obnoxiously using iPhones for years+, an S5 Mini that lags and ****s itself at every moment. I've now got a gangsaf little unit learning anything I can about this phone and after all my errors, not once have I seen this.
Just for relevancy, I have a G800Y model but I'm using one of the two kernels I could find that looked decent which the devs have listed under G800F and as far as I can tell or what I've read, there's no real difference other than a difference between the LTE bands they can access (someone please correct me if I'm wrong). If it would be so much as to ask what exactly is the software specifications of both of your devices? By this I mean:
- What ROM are you running; [Stock] or [Custom]?
- Have you rooted your device?
- Have you tried finding your device's most recent stock modem software?
- Did anything lead to this or is there anything you believe could have contributed to the occurence of such a problem?
- What carrier are you with in what location? If you do not wish to say for whatever reason, have you tried a search for devices with similar problems and a possible resolution method?

Hello, i have stock rom, IMEI is intact, not rooted,
Basisbandversion G800FXXU1CQB2
Kernel Version 3.4.39-895f4887
Buildnummer MMB29K.G800FXXU1CPL1
AP: G800FXXU1CPL1
CP: G800FXXU!CQB2
CSC: G800FDBT1CPL1
SIM-Card from Telekom or blau.de, both does not work.
I can receive the Providers, but can not connect.

Can't change the Service Provider CSC on my note SM-N960F

So I bought a brand new Sim-free sealed note 9 from eBay last week here in Germany. Take it from the box turn the phone on and see the OPTUS logo when I power it on and then I was thrilled like WTF is this a fake phone? (didn't know what that logo is) so I searched on google and found out that is just an Australian service provider so was relaxed and then I put different SIM card in the phone and I can do phone calls and use mobile data without any problems. The only problem is that the service provider SW is Locked on Optus Australia (OPS). I downloaded different stock firmware's from SamMobile for Germany (DBT), UK (BTU) Even Australia (XSA) and still in settings at the software info/service provider is shown: OPS/OPS,OPS/OPS and every time when I turn the Phone ON/OFF the annoying OPTUS logo is shown... I tried just only flashing the CSC in Odin but still no changes... I contact the buyer on eBay and he is willing to take the phone back and full refund me. But I want to keep the phone really like the Note 9. Please help me :angel:

You have to change the CSC using a combination file ROM, as they use a multi-CSC now. In some ways, it's better than the old system but in others, it's worse.
This took me ages to figure out but after finding a guide and the right combination ROM (must match the current bootloader version else it won't boot), it worked.
Here's the thread that helped me: https://forum.xda-developers.com/t/...9-s9-csc-only-same-model-numbers-csc.3870836/
Look through all the comments if you have issues. I believe I mentioned, somewhere in that thread, the exact steps I took to make it work.
Newer versions of SamFirm have a combination ROM download option to simplify finding one (new SamFirm builds don't seem to be on the website yet but the guy who maintains it now also has a YouTube channel where he posts links. Seems to be fine except the very latest version seems a bit ad-filled).
Just so you're aware, the N960F shouldn't be carrier-locked. You just can't change the CSC like older phones could. S7 and Note 7 were the last Samsung phones that used the old CSC system, if I remember correctly. Getting rid of the carrier logo is worth it, though, in my opinion.

For those of you with factory unlocked (xaa) u1 devices, does yours say xaa/xaa/xaa?

Or does it switch depending on your carrier?
for example go to settings, about phone, software information - then go all the way down and for service provider software version does it say xaa/xaa/xaa?
mine says att/att/xaa even though i have the xaa firmware flashed. My device is xaa which is why the third one says xaa and I bought it directly from samsung
so just wondering if the first 2 say att because i have an att sim and it installed some kinda carrier software?
What does yours say?

zentg said:
Or does it switch depending on your carrier?
for example go to settings, about phone, software information - then go all the way down and for service provider software version does it say xaa/xaa/xaa?
mine says att/att/xaa even though i have the xaa firmware flashed. My device is xaa which is why the third one says xaa and I bought it directly from samsung
so just wondering if the first 2 say att because i have an att sim and it installed some kinda carrier software?
What does yours say?
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I don't have a U1, but my understanding is the 1st att/ means that's the active csc (accurate in your case). The 2nd att just means it's single sim, if it had att/att in that position it would mean dual sim. The last being xaa is accurate as it signifies country / region phone was mfg for.
In my case it says xaa/xaa/tmb. And that's right I think as my sim card is mint mobile (t-mo mvno), so the first xaa is probably because mint isn't a carrier. The 2nd xaa same as yours, single sim, and it's probably going to use the code of whatever the first one is, either once or twice (dual sim). And last, min is a t-mo device originally, so accurate.
A funny thing for me, just used odin to update to latest xaa today. Now, as opposed to prior, my device says it's a G973U1. No mistake, it actually says that now, it used to say G973U. No big I guess, as I think it only looks at the last part of the csc code to know what variant it really is.
cheers

@AsItLies is correct. You can't get the last one to change because that's what it's built for. It doesn't matter anyway, as it's just info... doesn't affect operation. Some carriers may blacklist devices based on IMEI, which would be the same as that last CSC (for example, Verizon, my previous carrier, would do this often, even though the phone works just fine since the software can adapt).
The first is active carrier and the second is SIM, as noted. Mine shows TFN/TFN/SPR (TFN = Tracfone... my carrier is a subsidiary of TFN called TotalWireless, so this all makes sense).

Samsung Galaxy S10 - Unlocked Phone (AT&T Blocked Call Issue)

So many people are reporting with the 3/1 sweep by AT&T, that they are blocking almost all Unlocked phones: See: Downdector Link We personally have a S10 (G973U1). AT&T is saying on this list: AT&T approved phone list that it is supposed to work. But like many other people "calls" end immediately, but we can text and data work. It is some sorta ploy by AT&T to force us to upgrade our phones. They want us all to upgrade to S22s. Anyway I was ranting. Anyway, if you look at that link, they are saying that the phone has to be on the latest software. The last update from AT&T or the manufacturer was in January. I checked the firmware site, and Android 11 is the latest in January. I'm wondering if there is some hack to get us on to '12' or something. An update might solve this issue. We know that a new SIM does not work. Calls seem to be rejected on the network, just based on the phone model or Android version.
We are aware that a version 12 is out there for the phone, just that firmware is not for our US-unlocked model yet. But maybe it can be hacked?
Edit: It appears this thread may be linked with this older one... But it is ever more pressing issue now:
S10 Unlocked phone with AT&T Firmware here they explain how, and the problems with flashing. This was back in 2019, so I'm not sure if this will still work. Even then it didn't work for everyone. Some in that forum claimed that it did. AT&T seems to now be blocking from their calling network any phones not enabled with VOLTE and the extended AT&T services that are not present in Unlocked phones.

robertkjr3d said:
So many people are reporting with the 3/1 sweep by AT&T, that they are blocking almost all Unlocked phones: See: Downdector Link We personally have a S10 (G973U1). AT&T is saying on this list: AT&T approved phone list that it is supposed to work. But like many other people "calls" end immediately, but we can text and data work. It is some sorta ploy by AT&T to force us to upgrade our phones. They want us all to upgrade to S22s. Anyway I was ranting. Anyway, if you look at that link, they are saying that the phone has to be on the latest software. The last update from AT&T or the manufacturer was in January. I checked the firmware site, and Android 11 is the latest in January. I'm wondering if there is some hack to get us on to '12' or something. An update might solve this issue. We know that a new SIM does not work. Calls seem to be rejected on the network, just based on the phone model or Android version.
We are aware that a version 12 is out there for the phone, just that firmware is not for our US-unlocked model yet. But maybe it can be hacked?
Edit: It appears this thread may be linked with this older one... But it is ever more pressing issue now:
S10 Unlocked phone with AT&T Firmware here they explain how, and the problems with flashing. This was back in 2019, so I'm not sure if this will still work. Even then it didn't work for everyone. Some in that forum claimed that it did. AT&T seems to now be blocking from their calling network any phones not enabled with VOLTE and the extended AT&T services that are not present in Unlocked phones.
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Click to collapse
I was helped by a user to achieve ascendance onto the AT&T network. I'm not sure if I'm to reveal his name. We 1) go into Developers mode on the phone. 2) Hack the Kernel. 3) Flash the rom to the G973U (model)... with the AT&T firmware. So that the Wifi-Calling and 5G features would work, and AT&T would allow it on their network.

robertkjr3d said:
I was helped by a user to achieve ascendance onto the AT&T network. I'm not sure if I'm to reveal his name. We 1) go into Developers mode on the phone. 2) Hack the Kernel. 3) Flash the rom to the G973U (model)... with the AT&T firmware. So that the Wifi-Calling and 5G features would work, and AT&T would allow it on their network.
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Click to collapse
I've literally been searching for an answer to this for days now. My wife and I have S10's. I work far from home so I really need her phone working in case of emergency. Can you please point me in the general direction? Thanks!

Agreed, I didn't know such a thing was possible, but I'd love to hear more about this!

skrapmetal said:
I've literally been searching for an answer to this for days now. My wife and I have S10's. I work far from home so I really need her phone working in case of emergency. Can you please point me in the general direction? Thanks!
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At first I had to use the Samsung Band Selector app from the Play store and go into More Network Settings > AT&T > Preferred Network Type and choose 3G. Unfortunately this killed LTE so all data and calls were going through H+. As I was mostly on wifi I could live with it since I could actually use the phone again.
Then Friday morning I checked for updates and there was the update to take me to Android 12. I took the update then when it finished it said it needed to reboot to connect new SIM to carrier services....it wasn't a new SIM. I let it reboot and everything was working with VoLTE again.
Hope this helps.

KennyG123 said:
At first I had to use the Samsung Band Selector app from the Play store and go into More Network Settings > AT&T > Preferred Network Type and choose 3G. Unfortunately this killed LTE so all data and calls were going through H+. As I was mostly on wifi I could live with it since I could actually use the phone again.
Then Friday morning I checked for updates and there was the update to take me to Android 12. I took the update then when it finished it said it needed to reboot to connect new SIM to carrier services....it wasn't a new SIM. I let it reboot and everything was working with VoLTE again.
Hope this helps.
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I appreciate you getting back to me. Unfortunately I am still on android 11 with a custom ROM and also this is a global phone so that app didnt work for me. I dont receive OTA updatez. I'll update to a new ROM and see what happens. Thanks