[Q] Network unlocking galaxy SC-02C - Android Q&A, Help & Troubleshooting

I have Galaxy S2 phone bought from Japan and it was network unlocked by the carrier NTT Docomo.
I had been using it successfully in India with a local SIM card.
When it had the 2.3.6 GB version, it was working on roaming, but after upgrading to 4.0.3 ICS, on trying roaming facility, it has started giving network unlock error message.
Initially I thought it was a security message and tried the configured combinations. Unfortunately, after 3 attempts, it has got locked and not detecting any SIM nor asking for the network unlock code now.
Any possible solutions to handle this?
If rooting the phone and running the unlock software is the only solution then, which kernel to use for this?
Please do advise.
Thanks,
Bhakti

Related

[Q] How to imei unlock Galaxy i9100 Telcel

Hey guys hope you can help me.
I bought the code to unlock the network on my galaxy i9100, currently is locked to telcel mexico.
The thing is that I put in an AT&T sim card and no imput is displayed to enter the unlock code, when I put a T-Mobil sim card a blue lock is displayed saying Network Lock and a button sayin dismiss but no input to capture the code.
So what should I do? I was seaching in several posts and I think that changing the rom to another not from telcel can allows me to capture the unlock code, do you know if that is true? if so, can you tel me, what ROM is compatible to my samsung galaxy I9100 from Mexico ?
Thanks.
SIM Unlock SGS2 Telcel
Hi, I got last week my SGS2 for Telcel and I'm afraid you waste your money with the code, don't worry I also bought an usefulness code.
I did these steps:
DIAL *#SIMLOCK# (7465625) you will have a popup displaying Personalization status, the option NETWORK LOCK [YES] means your mobile is locked for TELCEL, the other options displays OFF.
IF you have NETWORK LOCK [OFF] means your mobile is SIM unlocked.
First you need to root your device, look in the forum how to do that and download busybox.
Well to unlock download from the market the app Galaxy_S Unlock market.android.com/details?id=com.helroz.galaxysunlock (it works with S and SII)
Open the app and follow steps, WARNING there are two steps for number two, I used second one.
Once finished, reboot the mobile and dial one more time *#SIMLOCK# you will have now NETWORK LOCK [OFF]
However I installed a SIM from IUSACELL it doesn't work, what worked for me was downgrade the the version to 2.3.3 reboot with IUSACELL simcard adn voila it is working. After IUSACELL simcard is accepted I upgraded to 2.3.6
You can change the version, root, no matter which change, even restore to Telcel image and the mobile will continue unlocked.
I hope it works for you, if you have any problem just let me know via DM or my twitter @D4N13L0G
hugeband said:
Hi, I got last week my SGS2 for Telcel and I'm afraid you waste your money with the code, don't worry I also bought an usefulness code.
I did these steps:
DIAL *#SIMLOCK# (7465625) you will have a popup displaying Personalization status, the option NETWORK LOCK [YES] means your mobile is locked for TELCEL, the other options displays OFF.
IF you have NETWORK LOCK [OFF] means your mobile is SIM unlocked.
First you need to root your device, look in the forum how to do that and download busybox.
Well to unlock download from the market the app Galaxy_S Unlock market.android.com/details?id=com.helroz.galaxysunlock (it works with S and SII)
Open the app and follow steps, WARNING there are two steps for number two, I used second one.
Once finished, reboot the mobile and dial one more time *#SIMLOCK# you will have now NETWORK LOCK [OFF]
However I installed a SIM from IUSACELL it doesn't work, what worked for me was downgrade the the version to 2.3.3 reboot with IUSACELL simcard adn voila it is working. After IUSACELL simcard is accepted I upgraded to 2.3.6
You can change the version, root, no matter which change, even restore to Telcel image and the mobile will continue unlocked.
I hope it works for you, if you have any problem just let me know via DM or my twitter @D4N13L0G
Click to expand...
Click to collapse
Thanks a lot for answer my question, I will root my device then.
Can you tell me, where did you get the roms? to downgrade to 2.3.3 and the other to upgrade 2.3.6.
Thanks.
pzyklone said:
Thanks a lot for answer my question, I will root my device then.
Can you tell me, where did you get the roms? to downgrade to 2.3.3 and the other to upgrade 2.3.6.
Thanks.
Click to expand...
Click to collapse
you can find them in this thread.
http://forum.xda-developers.com/showthread.php?t=1075278
Cosmic Blue said:
you can find them in this thread.
http://forum.xda-developers.com/showthread.php?t=1075278
Click to expand...
Click to collapse
Thanks for your help guys
What ROM is compatible, I downloaded one from the link above, one from telcel, and works fine the problem is that when I switch the sim card it says that is network locked, so I need another ROM but i dont know what is compatible with telcel, any help?
Thanks
thanks to hugeband here is the guide that he sent to me to downgrade the galaxy s2(telcel), the only proble, that I had, was that i return to android 2.3.6 from telcel, and the Rom is locking the sim card again....
to get the guide please send me a PM or to hugeband and we will send you the URL.
There's something odd, I unlock the galaxy s2 with the method described here and I am pretty sure that it is woking, since my GS2 is using now a T-Mobile sim card, well, the odd thing is when I switch the sim card for an AT&T sim card, the GS2 is still displaying the sim card error message.... I don't have the telcel rom anymore but this message is still happening. Odd thing.
Similar problem
Hi i have a similar problem. my network block is off but I still can't use my iusacell sim. The problem is that i am already in 2.3.3. What should I do?
The problem is that Telcel's modem is a locked one, so even if your device is "technically" unlocked, the modem file will keep popping that annoying lock thing.
1) Dial this from your phone*#7465625#
2) If you have the network lock off, go to next step, otherwise try to follow the second post of this threat until your network lock is off.
3) Flash any rom (or modem file if you wish to keep telcel's crappy apps) from here http://forum.xda-developers.com/showthread.php?t=1075278 After carefully reading the guide posted by Intratech and then try to switch sim cards again.
*As always be very careful before flashing anything and read all of the instructions. No one can take responsibility if you mess something up except for yourself... If you follow the instructions to the letter you should have no problems, as myself and others have done this before.
*If you have any more questions please post them in this threat so more people can learn, I will not respond to PMs.
http://forum.xda-developers.com/show....php?t=1075278 Not working anyother links or forum?? i cant seem to unlock mines, same telcel i tried helroz method but still cudnt work but wen i dial *#7465625# everthing is off

[QUESTION!] Do I have to reflash a stock ROM to enable to the network unlock?

I recently purchased a Galaxy S3 locked to the Orange UK network. First thing I did was root it install Foxhound ROM, making it my daily driver. Looked around for unlock codes on the internet until I finally got one that's confirmed working. However when you have to input the number to access network unlock (#7465625*638*#) it doesn't work, and doesn't register there's any kind of SIM in my handset at all. Do I have to reflash a stock ROM to get it to do that?
Many Thanks, Ash

Network Lock

Question : I am not sure were to find the answer. So for some reason my s2 became network lock . The last thing i did before it now ask for "SIM network unlock PIN" is a nandroid back using v12.6 with siyah s2 4.1.5kernel without any problem. I have been using wanam prior versions without a single problem. This s2 is purchase through samsung retail store here in Philippines so it is unlock to any network when it was purchase about 9 months ago, there are only 3 networks here and i have tried 2major network provider sim cards out of the 3 and both sim the s2 is asking for SIM network unlock PIN , i have been using the same sim card since the first day of purchase of this s2. I have tried a different ROM, currently on faryaab SuperNexus build 4( did a full wipe) and still asking for SIM network unlock PIN. So i don't even know what network is it lock to. Can any body help, any information is much appreciated
glynnpel said:
Question : I am not sure were to find the answer. So for some reason my s2 became network lock . The last thing i did before it now ask for "SIM network unlock PIN" is a nandroid back using v12.6 with siyah s2 4.1.5kernel without any problem. I have been using wanam prior versions without a single problem. This s2 is purchase through samsung retail store here in Philippines so it is unlock to any network when it was purchase about 9 months ago, there are only 3 networks here and i have tried 2major network provider sim cards out of the 3 and both sim the s2 is asking for SIM network unlock PIN , i have been using the same sim card since the first day of purchase of this s2. I have tried a different ROM, currently on faryaab SuperNexus build 4( did a full wipe) and still asking for SIM network unlock PIN. So i don't even know what network is it lock to. Can any body help, any information is much appreciated
Click to expand...
Click to collapse
I think you may have to use all these Galaxy S2 unlock apps to solve that. Please back up your /efs partition if you haven't before attempting to unlock your phone.

No Sim Card/emergency calls only help?

Hi, i have some problems with No Sim Card detected on Samsung Galaxy S III I9300 from T-Mobile (Austrian)
Firstly i unlocked the phone at the shop and was really unlocked on all sim cards but than i did a factory reset and the phone no longer detects sim card from other carriers, it only detects sim card from T-Mobile, It dosen't even shows the menu when you turn on the phone for network unlock.
I tryed using those secret codes to show the network unlock menu but they didn't work since the phone was updated to 4.3 firmware.
So i followed this guide on androible downgrade-galaxy-s3-i9300-android-4-3-android-4-1-2-jelly-bean-firmware
To downgrade to 4.1.2 firmware along with provided modem file. The secret codes now do show menu's but when i click on UMTS RF NV it says it's not supported.
Also instead of downgrading to T-Mobile 4.1.2 Firmware i downgraded it to Orange 4.1.2 Firmware hope that dosen't effects it in anyways? Phone otherwise works just fine IMEI Number shows OK.
I tryed 2 different SIM cards from orange none of them worked, it only detects SIM from T-Mobile.
To recap it all agean: I wish to unlock this phone so i can use different SIM card's but the phone is on NO Sim card, emergency calls only but when i insert T-Mobile Sim it works, Also there is no Network Unlock Menu shown durning turn on or reset since i already Unlocked the phone once with a code. Does anyone has any clue how to fix this or unlock it without rooting the phone.

Recently unlocked Galaxy J7 no service issue

I recently unlocked my Galaxy J7 Sky Pro from the tracfone carrier (called them, got two codes, put them in and device said it is now unlocked).
Now when I try to insert a different sim card the phone seems to have no service, even though the sim card is recognized (asks me for the pin and logs in properly). In fact that sim card is a prepaid european one, from the german carrier O2, but since J7 Sky Pro can do LTE connection I though that should work fine?
What do you guys think, is there something I could do to fix the issue?
My exact model is:
SM-S727VL
And android version is:
6.0.1
One kind of annoying thing is that even though I unlocked the phone, it still shows the tracfone logo on startup. Maybe the firmware is preventing the european sim card to connect to a tower? Is there some "international" version of firmware I could update to to make it work?
Thanks for any suggestion!

Categories

Resources