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[Q] Problems with sim unlock galaxy s2 I9100, chainfire and helroz unsuccesfull

Hi there,
I am having difficulty unlocking my new (UK) galaxy S2 and I figured this is the best place to ask for help. I have searched the threads on this forum and have not been able to find the answers I need. So I'm starting a new thread.
I have rooted the phone successfully and followed the instructions with the chainfire app and when it finished it said it couldn't find the unlock code. The phone came from Virgin as part of a contract, however the contract has been cancelled and I don’t have a virgin sim any more so I haven’t actually tried it with the virgin network. It might be worth mentioning here that when I put a different sim card in it the screen that pops up asking for the unlock code isn't there. I have also completed the procedure with the “galaxy S Unlock” app created by Helroz and that was also unsuccessful. Because the three steps in "galaxy S unlock" were unsuccessful I have restored the efs folder back to its original state. I have not bothered to try the manual method of recovering the unlock code using the hex editor because after reading this forum it seemed unlikely to work and it looked like a bit of a hassle.
I have tried several sim cards in the phone that work with my friend’s phone. And my phone was unable to connect to any networks. Except, when I tried my friends T-Mobile contract sim card I connected to the T-mobile network but my phone wouldn't allow out going or incoming calls however the data network worked fine! Yes the internet was working through the t-mobile network (wifi was turned off)
Isn't that weird!!!! So it kind of looks like the phone might be being blocked by the service provider but I find that very unlikely because up until a couple of days ago the phone was sealed in its box.
I have read through most of the "[HOWTO] GT-I9100 Free SIM Unlock via nv_data.bin by Odia" thread and there is some mention of a new locking technique employed by the various phone network companies. Does my problem sound like it could fall in to that category??
It might also be worth mentioning that I took the phone to a phone shop to see if they could unlock it. They couldn't, but the guy did check the IMEI number on a website called checkmend.com and that site reported: "checkmend has a record of this item having been blocked by a cell phone network" and "checkmend has a record that this item is currently blocked by one or more cell phone networks". Does anyone know anything about this website and weather it is reliable or not. Like I say I find it extremely unlikely that it has been blocked because I have only just got it out of the sealed box.
I am very frustrated as you can all imagine and I would really appreciate some help. Feel free to ask any questions, I am a bit of a noob but I'm not completely incompitent so don't be afraid to get technical.
Thank you for listening,
Yours,
Dardarland.

Bump...
I'm having kind of the same trouble here...
I tried the Chainfire's app and it couldn't find my code, so i went and tried the Helroz App
after following the instructiones in the app and checking with *#7465625# it changed network block to OFF... but when i inserted a diff carrier sim it said: network block... and now my other carrier sim got blocked and won't get recognized by the phone it used to be in... LOL
pls help us both!!

Unlocking
Hi
I did have the same problems with the chainfire app
what i did is use Galaxy_S Unlock (google it as I can not post links at the moment)
Also you will need to install busybox for this to work.
just search for busybox in market and install the first app that comes up
Hope it works

ragsbava said:
Hi
I did have the same problems with the chainfire app
what i did is use Galaxy_S Unlock (google it as I can not post links at the moment)
Also you will need to install busybox for this to work.
just search for busybox in market and install the first app that comes up
Hope it works
Click to expand...
Click to collapse
Thanks fella, worked like a charm

Re: fjaraiza
fjaraiza said:
Bump...
I'm having kind of the same trouble here...
I tried the Chainfire's app and it couldn't find my code, so i went and tried the Helroz App
after following the instructiones in the app and checking with *#7465625# it changed network block to OFF... but when i inserted a diff carrier sim it said: network block... and now my other carrier sim got blocked and won't get recognized by the phone it used to be in... LOL
pls help us both!!
Click to expand...
Click to collapse
Hi fjaraiza,
I saw somewhere in the forum guys that were having similar problems due to the carrier branded rom they had on the phone and due to helroz method which is far more intrusive than odia's. Helroz is flipping bits within nv_data.bin which might lead to corruption. The success of Helroz's method also depends on the phone protection method, some newer versions check the correspondent md5 and ignore the file if it's not the right one.
Your best bet would be to restore an /efs backup if you have one or backup the current state of /efs and try another rom.
Good luck,
Stefan.
P.S.: use thanks when the supplied information is useful

can unlock the messed up ones for a lil fee, pm

Helroz unlocks but then locks again...
Hi all, I've got a weird problem. I used Helroz SIM unlocker on my SGS2 (Im running the latest CM9 build 28/8) and it works. Helroz unlocks the phone but only for about 1-2h?! After about 1-2h the phone has lost NW connection and ask for the SIM unlock code. If I press 'dismiss' then I can run Helroz unlocker again and it will be ok for 1-2h and then loose the unlock again... Has anyone had this problem? Before I used a stock Samsung ROM and then Helroz unlocker worked perfectly, its since I've moved to CM9 ROM that I'm having this issue. Can anyone help?
Thanks in advance

I did have the same problems with the chainfire app
what i did is use Galaxy_S Unlock (google it as I can not post links at the moment)
Also you will need to install busybox for this to work.
just search for busybox in market and install the first app that comes up
Click to expand...
Click to collapse
This worked like magic, but i can i now uninstall the busybox as i dont need it or do i have to keep it on my phone to have it unlocked?

same pronblem
i unlocked my phone using "samsung galaxy unlock" when it was on gingerbread. then i updated it to jelly bean using cm10.2 & after that when i switched it on it says "Enter sim unlock code". i used the same app again but did't get any benefit. also tried few other apps but failed. now when i put the 3 network (the original carrier) it do same with that as well. somebody tell me what to do?

Network Unlock Unsuccessful on Atrix 2

I believe the previous owner of my new atrix 2 unsuccessfully tried to unlock the phone 10 times and now it will not take the correct subsidy code which I purchased. I am not overly familiar with android and have read some things on xda about other phone having this problem solved but nothing about the atrix 2 itself. Is there a software of hardware solution to this problem?

Don't know how it is on A2 but for Blackberry, after trying 10 times of wrong code phone wil be locked forever. You need to unlock it by hardware solution.

Is it saying "Subsidy locked" with no option to enter the code? If yes, the phone is hard locked and you will NEVER be allowed to enter a code again. You will need to find someone that has a hardware unlocking solution using special software.

I realize that it is hard locked however I am unable to find a hardware solution. Does anyone know of any specific location or hardware that can accomplish this?

thacmonster said:
I realize that it is hard locked however I am unable to find a hardware solution. Does anyone know of any specific location or hardware that can accomplish this?
Click to expand...
Click to collapse
There are hardware solutions like this and this that have worked on phones in the past. It's anyone's guess as to whether these would fit and work on our phone.

Thats a bummer cellunlocker.net said
WARNING : If one of theses messages appear :
- "Contact Service Provider"
- "Tampert Alter"
- "Wait before enter special Code"
- "Contact Service'
It's because you or somebody allready enter too many wrong codes, you just have to let phone ON on theses errors messages and after 40 min to 2 hours maximum the message "Enter Code Special" will appear again !
Not sure if this helps but could not hurt.....

OK,
A time back i had the same problem with my Samsung captivate. I flashed a new room and the counter reset itself. You could try that and see whether that works.

[Q] [HELP] Heat and signal problems on ZTE V970

Hi to all, I'm writing here because I had my first problems with my v970 (with etotalk rom). This evening I checked my mobile and I found that none of the sim was active (I was not in airplane mode) and I could not activate them, as if they were not in their slots. Meanwhile the upper part of the device began to heat up, so I tought it could be an antenna/receiver problem. I almost forgot to say that I installed Truecaller (deleting Contapps) and updated facebook and few others apps less than one hour before the event, but I already uninstalled them to exclude some of the possible causes. I'll gladly listen to any advice. Thank's in advance. GL

Restart, and see if it continues.

Already tried a lot of times, with or without sim cards. I also noticed an abnormal use of battery.

When did the problem start? What did you do before it started? Does your cellphone always have no signal, or does it come & go (sometimes SIM works, sometimes it doesn't)? Have you checked your APN settings?

post-mortem said:
When did the problem start? What did you do before it started? Does your cellphone always have no signal, or does it come & go (sometimes SIM works, sometimes it doesn't)? Have you checked your APN settings?
Click to expand...
Click to collapse
The problem started yesterday and I never experimented It till now. As I Said, before I encountered It, I updated some apps from the market and I changed the default caller manager (should I call It in this way?) with Truecaller. I also deleted my sim contacts
. I can't check apn because there are no apns to check (Android shows me the voice "mobile networks" but I can't select it
Update: I tried to restore the original rom, but the problem persists. I also made a check with the recovery, and it shows me that the device cannot detect sim cards. I begin to think that it's an hardware problem (ouch). Am I right?

What did you do in recovery that checks SIM cards? Are you talking about CWM recovery?

post-mortem said:
What did you do in recovery that checks SIM cards? Are you talking about CWM recovery?
Click to expand...
Click to collapse
Nope, it's the faulty recovery that etotalk sent me with the phone. I would like to install the cwm and flash another rom, but I'll leave that as the last option

If the recovery they sent you is faulty, then what good is it? If there's a custom recovery available for your phone, you might as well go with it, not that it'll solve anything by itself.
You might try inserting some kind of shim along with the SIM card to see if the extra pressure help make contact with the leads. Careful, of course, that whatever you stick in there doesn't stay behind.

post-mortem said:
If the recovery they sent you is faulty, then what good is it? If there's a custom recovery available for your phone, you might as well go with it, not that it'll solve anything by itself.
You might try inserting some kind of shim along with the SIM card to see if the extra pressure help make contact with the leads. Careful, of course, that whatever you stick in there doesn't stay behind.
Click to expand...
Click to collapse
I know about the recovery, but I was trying to don't invalidate the warranty (as if I'll ever use it...). Now I'm charging the phone, it's already the third time today...

Aw, heck. If you've got warranty, just send it in.

post-mortem said:
Aw, heck. If you've got warranty, just send it in.
Click to expand...
Click to collapse
Yep, I've got warranty, but sending it in China will cost me almost as much as buying a new one

Ok, I flashed a recovery and a custom rom, but nothing happened.The signal is still absent and the antenna heats up the same way as before. I tried to enter engineer mode and it shows me messages as "com.android.internal.telephony.CommandExcepti on: RADIO_NOT_AVAILABLE", "3G off. Cannot set", ecc... It also shows me "invalid IMEI" if I try to look at it and I cannot change it back with the AT +EGMR command (it says "Radio on" and "SIM State: ABSENT", altough the SIM card is in its slot).

I think you have to crack the case.

ArcheoGian said:
Ok, I flashed a recovery and a custom rom, but nothing happened.The signal is still absent and the antenna heats up the same way as before. I tried to enter engineer mode and it shows me messages as "com.android.internal.telephony.CommandExcepti on: RADIO_NOT_AVAILABLE", "3G off. Cannot set", ecc... It also shows me "invalid IMEI" if I try to look at it and I cannot change it back with the AT +EGMR command (it says "Radio on" and "SIM State: ABSENT", altough the SIM card is in its slot).
Click to expand...
Click to collapse
Hmmm... if your phone is reporting invalid IMEI numbers then I would try first to get that working as it should. Read this tutorial and re-write your IMEI numbers.
Then I would try the latest stock ROM, which is available on ZTE support website. Here is the direct link to the ROM.
If your phone still doesn't work after that, then I'm afraid you have a hardware problem.

I have had the telephone for more than one month with no problem. Trying every ROM made by Bruno with no problem at all with signal, but...
About 4 days ago, I started suffering exactly the same problems stated by ArcheoGian. I have tried everything (installing older Roms, rebooting, changing SIMs from 1 to 2, etc.) but unfortunately with no success. I just have to try to install the original ROM, but I supose it will be the same.
Afer a few reboots, I can make the telephone to search for a network, it founds it, it connects, it transfers data, I can make calls, but ramdomly (can be after 30 seconds, 30 minutes or maximum one hour) it disconnects and the red X of death (Xbox 360 times ) appears on top of the screen.
I can try to go and return from airplane mode, or search for networks that it won't re-connect.
I fear it can become a typical problem for this phone.
I am "delighted" to send it back to China and wait for two months to get it back (after explaining it to the seller and so on). Fingers crossed

@prinxo: did you buy it from eto...k? (I don't know if I can write the entire name of the seller)
Update: I tried everything it was told me (except to crack the case, at least not yet...), my last hope is to manually insert the IMEIs inside the data folder. There's just one problem: none of the methods suggested in the link posted by bcgngm works on my phone, so I need to generate the IMEIs whit my pc (I couldn't open the exe with windows 7, I'll try with win xp in a while, otherwise I have to ask someone to create it for me).

ArcheoGian said:
@prinxo: did you buy it from eto...k? (I don't know if I can write the entire name of the seller)
Click to expand...
Click to collapse
No, I bought it from another seller at Aliexpress.
As I thought: I tried to re-install an original ROM, and everything remains the same. I thought I was successfull but after one hour the phone disconnected itself from the network. After that moment, I need about 3 re-boots to get signal again and it lasts for just a few minutes.
At this point, I would disregard a software problem.
Happy happy to have to send it back to China.

ArcheoGian said:
Update: I tried everything it was told me (except to crack the case, at least not yet...), my last hope is to manually insert the IMEIs inside the data folder. There's just one problem: none of the methods suggested in the link posted by bcgngm works on my phone, so I need to generate the IMEIs whit my pc (I couldn't open the exe with windows 7, I'll try with win xp in a while, otherwise I have to ask someone to create it for me).
Click to expand...
Click to collapse
Why do you say it is not working? My preferred method is to use the adb commands (and for that you have to install Android SDK). Don't forget that when you type the commands there is no output message on the screen. The phone has to be restarted so that changes take effect.

bgcngm said:
Why do you say it is not working? My preferred method is to use the adb commands (and for that you have to install Android SDK). Don't forget that when you type the commands there is no output message on the screen. The phone has to be restarted so that changes take effect.
Click to expand...
Click to collapse
The third and the fourth ones are the only methods to restore IMEI I didn't try, just because I never used sdk and adb (and I'm not sure to be able to use them). I followed the others options (I also created the IMEI file with the russian program), but it continues to show me the "invalid IMEI" message. Can you help me, maybe showing me a good walkthrough?

This ADB Tutorial looks easy to follow. Check it out!

Need help with SIM Network Lock (SM-J700M)

Alright, so, last weekend I got a new Samsung Galaxy J7 with Android 6.0.1. The first thing I did was rooting it. It was all going fine until I accidentally unticked the "OEM Unlock" option on Developer Mode, so when I rebooted it, it had an FRP Lock.
I used a Latin American firmware to be able to boot it again. At boot, there was this "entel" logo, and this seemed to have changed my IMEI because my phone always said Network Unavailable. I didn't check the IMEI prior to rooting it, but I noticed the printed one and the one shown on the phone weren't the same... but this isn't the real problem.
Originally, the phone was unlocked (no specific carrier/operator holding it), and I somehow "fixed" the Network Unavailable thing by erasing the efs folder on root... well, it was a longer process than just deleting it, I backed up the folder and copied some files (some might know what I'm talking about). After that, the IMEI was the same than the printed one, but, my phone is now network SIM locked!
I have to input a code to unlock it. I did some googling and apparently only the carrier can give it to you, so I tried 3 different carrier SIM cards to see if any of them were the carrier's, but none of them worked as accepted,and I don't know what carrier could it be... I'm even worried it may be a Latin American one (from Chile or Argentina maybe since that's where the firmware used was from) and I won't be able to get it.
I know there are websites to get a code, but I don't want to pay so much and risk getting scammed.
I tried to see if "entel" was a carrier to unlock it, but it didn't help.
Also, when I try to choose a network on Mobile Networks settings, the only available one is AT&T (which I don't use/have a SIM of), but when I accessed their website to unlock, it said my IMEI wasn't registered as theirs apparently.
Then, I also tried using Samsung's Smart Switch application on PC with the Device Initialization option, but when I try to use the firmware from that I get a SW REV. Check Fail.
I might be wrong, but I feel that since messing with the system files/root was what changed it, maybe I can fix it the same way with no unlock code or carrier help.
So, does anyone have advice, or know some other way to reset it? Or do I really have to go get it fixed/unlocked somewhere?

frostx said:
Alright, so, last weekend I got a new Samsung Galaxy J7 with Android 6.0.1. The first thing I did was rooting it. It was all going fine until I accidentally unticked the "OEM Unlock" option on Developer Mode, so when I rebooted it, it had an FRP Lock.
I used a Latin American firmware to be able to boot it again. At boot, there was this "entel" logo, and this seemed to have changed my IMEI because my phone always said Network Unavailable. I didn't check the IMEI prior to rooting it, but I noticed the printed one and the one shown on the phone weren't the same... but this isn't the real problem.
Originally, the phone was unlocked (no specific carrier/operator holding it), and I somehow "fixed" the Network Unavailable thing by erasing the efs folder on root... well, it was a longer process than just deleting it, I backed up the folder and copied some files (some might know what I'm talking about). After that, the IMEI was the same than the printed one, but, my phone is now network SIM locked!
I have to input a code to unlock it. I did some googling and apparently only the carrier can give it to you, so I tried 3 different carrier SIM cards to see if any of them were the carrier's, but none of them worked as accepted,and I don't know what carrier could it be... I'm even worried it may be a Latin American one (from Chile or Argentina maybe since that's where the firmware used was from) and I won't be able to get it.
I know there are websites to get a code, but I don't want to pay so much and risk getting scammed.
I tried to see if "entel" was a carrier to unlock it, but it didn't help.
Also, when I try to choose a network on Mobile Networks settings, the only available one is AT&T (which I don't use/have a SIM of), but when I accessed their website to unlock, it said my IMEI wasn't registered as theirs apparently.
Then, I also tried using Samsung's Smart Switch application on PC with the Device Initialization option, but when I try to use the firmware from that I get a SW REV. Check Fail.
I might be wrong, but I feel that since messing with the system files/root was what changed it, maybe I can fix it the same way with no unlock code or carrier help.
So, does anyone have advice, or know some other way to reset it? Or do I really have to go get it fixed/unlocked somewhere?
Click to expand...
Click to collapse
Did you ever get anywhere with this? I am trying to switch carriers from t mobile to boost on the Sm-j700f and I need to unlock it

Need help with SIM Network Lock

(I accidentally posted this in an unrelated discussion so sorry if it appears twice!)
Alright, so, last weekend I got a new Samsung Galaxy J7 (SM-J700M) with Android 6.0.1. The first thing I did was rooting it. It was all going fine until I accidentally unticked the "OEM Unlock" option on Developer Mode, so when I rebooted it, it had an FRP Lock.
I used a Latin American firmware to be able to boot it again. At boot, there was this "entel" logo, and this seemed to have changed my IMEI because my phone always said Network Unavailable. I didn't check the IMEI prior to rooting it, but I noticed the printed one and the one shown on the phone weren't the same... but this isn't the real problem.
Originally, the phone was unlocked (no specific carrier/operator holding it), and I somehow "fixed" the Network Unavailable thing by erasing the efs folder on root... well, it was a longer process than just deleting it, I backed up the folder and copied some files (some might know what I'm talking about). After that, the IMEI was the same than the printed one, but, my phone is now network SIM locked!
I have to input a code to unlock it. I did some googling and apparently only the carrier can give it to you, so I tried 3 different carrier SIM cards to see if any of them were the carrier's, but none of them worked as accepted,and I don't know what carrier could it be... I'm even worried it may be a Latin American one (from Chile or Argentina maybe since that's where the firmware used was from) and I won't be able to get it.
I know there are websites to get a code, but I don't want to pay so much and risk getting scammed.
I tried to see if "entel" was a carrier to unlock it, but it didn't help.
Also, when I try to choose a network on Mobile Networks settings, the only available one is AT&T (which I don't use/have a SIM of), but when I accessed their website to unlock, it said my IMEI wasn't registered as theirs apparently.
Then, I also tried using Samsung's Smart Switch application on PC with the Device Initialization option, but when I try to use the firmware from that I get a SW REV. Check Fail.
I might be wrong, but I feel that since messing with the system files/root was what changed it, maybe I can fix it the same way with no unlock code or carrier help.
So, does anyone have advice, or know some other way to reset it? Or do I really have to go get it fixed/unlocked somewhere?