Is there anyway to Unlock the Samsung Galaxy S3 T999 with Android Version 4.3 , I tried everything , Downgrade Firmware , Change Modem to UVLJC and nothing . Help please
Flash a 4.1.1 or 4.0.4 ROM and modem (not Odin, or you will brick), then follow the unlock guide.
Alternately if you have the phone thru T-Mobile they will unlock it for you if the bill is current, or you can buy an unlock code online for under $10.
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Adreaver said:
Flash a 4.1.1 or 4.0.4 ROM and modem (not Odin, or you will brick), then follow the unlock guide.
Alternately if you have the phone thru T-Mobile they will unlock it for you if the bill is current, or you can buy an unlock code online for under $10.
Sent from my SGH-T999 using XDA Premium 4 mobile app
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It doesnt work that way either. It lose the imei with a different MODEM, you need to flash it again the New Modem to recover the IMEI. Please I need to unlock this device. Any ideas?
Where 4.3 is concerned, there is no way to unlock using any of the previous methods. Your best bet is to call T-Mo
Im having problems sim unlocking as well. T mobile sent me a code that does not work. Still waiting on there help. Suggestions?
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mike102871 said:
Im having problems sim unlocking as well. T mobile sent me a code that does not work. Still waiting on there help. Suggestions?
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Did you ever solve your problem. I have the same issue. I got the code from Tmo and is says unlock unsuccessful. I havent called them yet.
K6TJS said:
Did you ever solve your problem. I have the same issue. I got the code from Tmo and is says unlock unsuccessful. I havent called them yet.
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It's kind of resolved. There are sending me a replacement s3 but they are on back order. Been 4 days and nothing.
mike102871 said:
It's kind of resolved. There are sending me a replacement s3 but they are on back order. Been 4 days and nothing.
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Well after calling TMobile again and spending close to an hour on the phone they escalated me to "Someone Will Call You Back" LOL
So Today I downloaded the stock 4.1.1 and loaded with odin. Then Used the steps in the below thread to obtain sim unlock without TMobiles help.
http://forum.xda-developers.com/showthread.php?t=2176719
I hope this helps someone else as this is very frustrating to go through.
I got a replacement pho e sent . Its already on 4.3 got a new unlock code. And it does not work again . What is with tbem sending wro g unlock codes. Is it a problem because of 4.3? Im fed up with this.
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sim unlock 4.3
You only have two options... Option 1, You wait until kikkat 4.4 become available for upgrade then unlock the phone with same code. Or option 2, you find the stock rom that came with the the phone which is the ice cream 4.04. Then use odin to downgrade and then you can use the same code.
w33rdst said:
You only have two options... Option 1, You wait until kikkat 4.4 become available for upgrade then unlock the phone with same code. Or option 2, you find the stock rom that came with the the phone which is the ice cream 4.04. Then use odin to downgrade and then you can use the same code.
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You can not downgrade from 4.4 or 4.3 to a lesser android version
Yea don't try to downgrade ur phone or u will end up with a brick
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Does anyone know if my phone is unlocked and I restore it to factory will I lose my unlock? I had it rooted and unlocked and now unrooted it and restored back to factory. I unlocked my phone by requesting the code from Tmobile and they have me the code free.
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bongbillawong said:
Does anyone know if my phone is unlocked and I restore it to factory will I lose my unlock? I had it rooted and unlocked and now unrooted it and restored back to factory. I unlocked my phone by requesting the code from Tmobile and they have me the code free.
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You will never, ever, not in this lifetime, ever ever, loose unlock... you can flash a million things... unlock stays forever...
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Just a little confused and hope someone here can give me some answers, ive just purchased my Note 2 off a guy who told me it was unlocked to all networks which it is.it has the o2 boot up screen but im running it on the 3 network its working no problem.My question is when i check in about device it says its modified! But the device as far as i know is not rooted, can someone explain howvthis is done and what would happen if i rooted the phone,would i loose the unlock ??
Any help would be great
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Hally79 said:
Just a little confused and hope someone here can give me some answers, ive just purchased my Note 2 off a guy who told me it was unlocked to all networks which it is.it has the o2 boot up screen but im running it on the 3 network its working no problem.My question is when i check in about device it says its modified! But the device as far as i know is not rooted, can someone explain howvthis is done and what would happen if i rooted the phone,would i loose the unlock ??
Any help would be great
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you will need to be more specific, im sure it does not says "its modified!" on those words, a screenshot would be nice.
Assuming it says that on "About phone" is not rooted already?
Depending on the method used when it was unlocked it may be locked back, I have not seen a software unlock, so far all the unlocks for the note 2 have been by code, or by Samsung Dev Menu, in those cases they are likely to stay after rooting your phone. Proceed to root your phone at your own risk, but more likely it wont be locked.
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Hally79 said:
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Download 'root checker' from play store..if no root access.Do a factory reset.
Just checked with root checker and i have no root! But it still says my device is "Modified" do you think the device will still be unlocked if i do a factory reset ?
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Yes you can wipe
reboot to recovery, wipe cache and data (factory reset)
reboot normally and play for about 10 min before checking status again
If it is stil modified, just flash stock ROM with PC odin (find on 1st link on my signature)
On a T-mobile note 2 Model # SGH-T889 will a factory reset change the unlock status if the phone was unlocked by T-mobile?
This might be a stupid question but I want to ask anyway. I just bought a T-Mobile Note 2 and am awaiting a sim unlock code (I know I can downgrade to 4.1.1 and unlock it via the hidden call menu but at this time I am not opting to do that). I flashed the 4.1.2 Root Injected Stock Rom. My question is, (which maybe I should have asked before hand) Will I be able to use the sim unlock code that T-Mobile provides me with despite being on the root injected 4.1.2 stock rom? Thanks!
No issues, I did it and it worked for me.
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So how did u unlock it. I have been looking for a method but none worked.
Can u please share ur method.
Thanks
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I unlocked it using the code provided by t-mobile.
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Hey guys, just a heads up, if you are running 4.1.2 there is NO WAY to unlock your T-Mobile Note 2 without downgrading to 4.1.1 as far as I can tell. Even if you receive an official code from T-Mobile it will not work because when Samsung patched the security hole in 4.1.1 which allowed people to unlock their device manually they (accidentally) blocked any way of sim network unlocking. You can read all the complaints on the t-mobile website forums. So, with that being said you have to downgrade to 4.1.1 with Odin and access the hidden menu from the dialer. Just search the threads and you will find easy instructions.
NOTE: When you downgrade to 4.1.1 make sure you do a factory reset from recovery before you flash via Odin. After you flash the ROM your phone MIGHT go into a bootloop/hang on Samsung logo. Just go back into recovery and factory reset again. Give your phone about 4-5 minutes to boot up, just sit it on the table.
YMMV.
Thanks a lot for the tips but I downgraded before and it didn't work.
I still have a backup of the rooted 4.1.1 stock ROM. That's how I downgraded and tried to unlock but nothing happened.
Do u think I did something wrong or is there another way?
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Hi my friend has my old galaxy s3 and its an ATT one and its still on the old 4.1.2 with the old modem and its unlocked carrier wise so he can use his T-Mobile Sim card. If I update it to 4.3 or the latest modem is it going to still be unlocked/ be able to be unlocked?
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Tyler.Boston1 said:
Hi my friend has my old galaxy s3 and its an ATT one and its still on the old 4.1.2 with the old modem and its unlocked carrier wise so he can use his T-Mobile Sim card. If I update it to 4.3 or the latest modem is it going to still be unlocked/ be able to be unlocked?
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Yes it will, an unlock is permanent and cannot be undone. But if you ever want to root or flash a rom, I would not suggest doing this due to the fact that 4.3 makes rooting and flashing roms difficult, not to mention that you will not be able to downgrade.
My phone has mjb modem I tried the method which is confirmed working in 4.1.1 but in 4.3 it seems not to work... Phone is rooted. Any advice? When ever I insert an other not supported sim it says no sim inserted. I have sr3x rom.
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Najuto9tail said:
My phone has mjb modem I tried the method which is confirmed working in 4.1.1 but in 4.3 it seems not to work... Phone is rooted. Any advice? When ever I insert an other not supported sim it says no sim inserted. I have sr3x rom.
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Your success in using the free unlock would appear to depend on which bootloader is installed on your phone.
If you have the MJB bootloader you are most likely out of luck. If you have the MJ2 bootloader it is probably possible. I reference this post found in one of the unlock threads:
http://forum.xda-developers.com/showpost.php?p=51980631&postcount=199
dawgdoc said:
Your success in using the free unlock would appear to depend on which bootloader is installed on your phone.
If you have the MJB bootloader you are most likely out of luck. If you have the MJ2 bootloader it is probably possible. I reference this post found in one of the unlock threads:
http://forum.xda-developers.com/showpost.php?p=51980631&postcount=199
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Thanks, so it seems I am out of luck since my phone once had bricked and I unbricked with full mjb firmware... My modem and bootloader is mjb... No free unlock working with that.
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Najuto9tail said:
Thanks, so it seems I am out of luck since my phone once had bricked and I unbricked with full mjb firmware... My modem and bootloader is mjb... No free unlock working with that.
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@Najuto9tail, there may still be a bit of hope. I came across the link to this post today in a comment by DocHoliday77
http://forum.xda-developers.com/showpost.php?p=51980631&postcount=199
Once updated to 4.3 (MJB), you cannot downgrade, even just the modem. The requirement for the free unlock is the 4.1.1 modem, and since it won't work, you can't do the unlock.
The only way I know of is by using an unlock code either from AT&T or one bought online. Sorry.
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DocHoliday77 said:
Once updated to 4.3 (MJB), you cannot downgrade, even just the modem. The requirement for the free unlock is the 4.1.1 modem, and since it won't work, you can't do the unlock.
The only way I know of is by using an unlock code either from AT&T or one bought online. Sorry.
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Yeah I thought that it would be like that. Thanks. I do not need to unlock it anyways, I solved the problem which wanted me to change carrier.