Develop Bugs

SIM unlocking through the registry? Possible?

So my phone (Cavalier) is sim locked to Vodafone Egypt. I have ordered a code online from mobileunlocked.com and paid 45 dollars for it, and it got to me in a few days, but the code did not work, it told me "Invalid unlock code" anyways I wrote the company and I am waiting for them to get back to me as they promise to either fix the problem or refund me the money.
Anyways in the meantime, as I wait for the company to get back to me, I was doing some playing around and I noticed that I am totally able to go into the registry and change things, without any problems or any restrictions (Manytimes the carrier will sim lock the phone and you would not even be able to change the registry)
So my question is, is there anywhere in the registry where the sim lock/unlock feature is located? and if so is there anway for me to go in there and change it so I can sim unlcok this phone?
I know this may seem like a silly question but I had to give it a shot.
Thanks guys!

The SIM lock is not in the Registry but buried deep in the ROM.
It's not in the interest of HTC or the Telcos to make it easy to unlock so it's usually heavily encrypted and is generally unique to each model of phone.
However there are some pretty smart programmers here in XDA Developers and many of the phones have software available here to SIM unlock them - check the appropriate form for your phone.
If you find a free SIM unlocker that works for you, please make a donation to the developer so that they feel their work is appreciated - it's not easy to crack!
Good luck!

If it is buried deep in the rom, then how come if you put a different rom on, the phone still stays locked?
Again, maybe a silly question?

not the rom, but the eprom or even some form of bios. not sure if these phones have miniture LPC ports or not. never cracked one open.
big ach said:
If it is buried deep in the rom, then how come if you put a different rom on, the phone still stays locked?
Again, maybe a silly question?
Click to expand...
Click to collapse

How to unlock / use other carriers

Hello,
I had an HTC Touch Dual (WM) in the past, and back then it was very easier to unlock (use other network carriers) the phone - using a tutorial from this forum.
I'm about to buy a HTC blocked by T-Mobile and I'm wondering if there's any way to do the same to use it with other carrier at another country. I think what I am asking is a way to CID unlock without code.
I've searched through the stickies but I honestly didnt find the information, I'm sorry if I missed it. I also sorry if it's not the wrong section, I'm not sure where (and if) we can put this question here.
Thanks!

try using something like this:
http://www.htcunlocking.co.uk/
There is no 'free' way of unlocking. unless the current owner with the T-Mobile account calls tmobile and asks them for the code.

minty1978 said:
try using something like this:
http://www.htcunlocking.co.uk/
There is no 'free' way of unlocking. unless the current owner with the T-Mobile account calls tmobile and asks them for the code.
Click to expand...
Click to collapse
Well, things changed
It's not very expensive though, assuming it works :=

Maxxd01 said:
Hello,
I had an HTC Touch Dual (WM) in the past, and back then it was very easier to unlock (use other network carriers) the phone - using a tutorial from this forum.
I'm about to buy a HTC blocked by T-Mobile and I'm wondering if there's any way to do the same to use it with other carrier at another country. I think what I am asking is a way to CID unlock without code.
I've searched through the stickies but I honestly didnt find the information, I'm sorry if I missed it. I also sorry if it's not the wrong section, I'm not sure where (and if) we can put this question here.
Thanks!
Click to expand...
Click to collapse
Depends on the age of the phone, If you have it 1 or 2 years already call your provider and they must give you a code and with that you can remove the simlock, that is how I did it with the Hero and my old samsung and Nokia. Soo I would give them a call or look on the site.
And if that is not the case. Go to some phone shop, a small one and they will do it for ya for 10 bucks, works to.

Do you mean Locked to a carrier or Blocked by a carrier? if you mean locked then yes its possible with a paid unlock code.If you mean Blocked i.e Stolen or reported Lost then NO when an unlock code is requested through IMEI it gets logged that its been BLOCKED as its stolen/lost and they will just BLOCK it again

[Q] unlocked 800x

I had messaged someone my meid number and received a unlock code for my 800x. I successfully unlocked my phone. Some time later the bootloader became corrupted and I had to fix it. I relocked the phone and used the offical sony tool to restore my phone. I was wondering how I go about unlocking my phone again the number i had was written on a sticky note that was on my desk which my cat knocked a glass of chocolate milk on....thanks in advance
Also will donate small amount

Unfortunately that number was kinda super important, you see for r800x's the bootloader is ready to be unlocked out of the gate unlike many other versions. The reason why you generally can't unlock them though is because sonys online tool needs an IMEI to calculate your unlock code, which is a problem because CDMA phones dont have one, they have MEID codes instead. So anyway a while ago someone found out how to cheat sonys site into accepting MEID codes and spitting out the correct unlock code. Unfortunately the holes long been patched so your only option now is a paid service such as this one (~$24):
http://forum.xda-developers.com/showthread.php?t=1322827

I was hoping someone had it on file.. it was a member here I don't remember who.

Ya in its prime there was I think 4 people collecting the codes right before sony shut it down, somewhere in here:
http://forum.xda-developers.com/showthread.php?t=1197890
I think it was ashergray, mills, blagus and possibly someone else, anyway they broke up the numbers by sections, so there is a chance one of them might have your number still, or maybe they collaborated, I guess theres only one way to find out...
*EDIT* Around here-ish they mention it:
http://forum.xda-developers.com/showthread.php?t=1197890&page=19

[Q] Unlocking the T989 Revisited

First:
I know there is a fully legit method to unlock this phone via t-mobile. For what it is worth, I recently tried to do this and was stymied by the bureaucracy before I was able to get it done. Specifically, they apparently had a different phone registered to my account despite the fact I had activated it with the T989 (switched to prepaid) so I had to wait 24 hours for that to get into the system. Then I was required to FAX my proof of purchase but by then I was out of the country.
(Funny story: I got my g/f a legit unlock code, who is running a Vibrant. It didn't work, and we found this out in South Africa. Luckily I brought an extra phone which I had unlocked myself.)
Second:
Has anyone taken a serious look at this? I know there are ways to do this with various (kind of expensive) hardware, unlocking websites of various pedigrees, or taking it in to certain stores for a fee. But first of all where is the fun in that, and second of all, for people in a pinch all of these methods may not work. Best to have a DIY method where all you need is adb and a hex editor.
Third:
Unlocking is a pain anyways, because from what I read you have to go back to stock to do it, and who wants to do that?
Finally:
Does anyone want to try this? I am not a seasoned developer, but I am probably going to go through the official process of unlocking my phone, which means that if there is something I can snapshot, I can do it before and after, which might provide some hints as to where this phone is unlocked. Privacy issues must be respected, meaning I probably will be reluctant to share details such as my IMEI, but maybe we can all work together to figure out offsets or otherwise find a pattern useful in unlocking this device.
Thoughts?

Same thing about the vibrant here. I requested the unlock code from Tmo, and they sent it in a about a day. When I tried to use the unlock code, it wouldn't work. I used all attempts except one and it's still locked.I called T-Mobile and they asked me to send it in.
Sent from my SGH-T989 using xda app-developers app

The rep you spoke to should have asked you for your new IMEI number so they can punch it in. They can run the unlock code thing whatever with your new imei too, I have no idea why they didn't do that.Thats what I did when I unlocked my phonessssss.

tablador said:
First:
I know there is a fully legit method to unlock this phone via t-mobile. For what it is worth, I recently tried to do this and was stymied by the bureaucracy before I was able to get it done. Specifically, they apparently had a different phone registered to my account despite the fact I had activated it with the T989 (switched to prepaid) so I had to wait 24 hours for that to get into the system. Then I was required to FAX my proof of purchase but by then I was out of the country.
(Funny story: I got my g/f a legit unlock code, who is running a Vibrant. It didn't work, and we found this out in South Africa. Luckily I brought an extra phone which I had unlocked myself.)
Second:
Has anyone taken a serious look at this? I know there are ways to do this with various (kind of expensive) hardware, unlocking websites of various pedigrees, or taking it in to certain stores for a fee. But first of all where is the fun in that, and second of all, for people in a pinch all of these methods may not work. Best to have a DIY method where all you need is adb and a hex editor.
Third:
Unlocking is a pain anyways, because from what I read you have to go back to stock to do it, and who wants to do that?
Finally:
Does anyone want to try this? I am not a seasoned developer, but I am probably going to go through the official process of unlocking my phone, which means that if there is something I can snapshot, I can do it before and after, which might provide some hints as to where this phone is unlocked. Privacy issues must be respected, meaning I probably will be reluctant to share details such as my IMEI, but maybe we can all work together to figure out offsets or otherwise find a pattern useful in unlocking this device.
Thoughts?
Click to expand...
Click to collapse
thatlaoboi said:
Same thing about the vibrant here. I requested the unlock code from Tmo, and they sent it in a about a day. When I tried to use the unlock code, it wouldn't work. I used all attempts except one and it's still locked.I called T-Mobile and they asked me to send it in.
Sent from my SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
I got mine through T-Mobile. Only issue i had was the dummy who sent the email forgot to actually put in the code so i had to talk to a rep who gave it to me then. But i flashed to stock entered code, and was able to use the ATT sim card perfectly no issues.
BTW the reason for putting it back to stock, i think the apk required for entering the code isnt on custom ROMs.
And just outta curiosity, how do you use ADB and a hex editor to figure out the unlock code? i always wondered where the unlock code came from wondered how it was calculated and such.. it must just be off the IMEI since thats all any company or t mobile needs to get the code..

After hours last night and this morning, this worked for me: http://forum.xda-developers.com/showthread.php?t=2024514
Spread the word! :victory:

Multiple brands unlocked without code

Initially asked about M9s, but now I have a sony and samsung that have been carrier unlocked without a code. Carriers say the code should be needed, but 6 separate andriod phones have been unlocked ( were locked when new ). Still no explanation of "***,144***" code.
Any thoughts on how this might be possible? Aside from an alternate personality that knows how to hack.

squidstings said:
Initially asked about M9s, but now I have a sony and samsung that have been carrier unlocked without a code. Carriers say the code should be needed, but 6 separate andriod phones have been unlocked ( were locked when new ). Still no explanation of "***,144***" code.
Any thoughts on how this might be possible? Aside from an alternate personality that knows how to hack.
Click to expand...
Click to collapse
Probably leaked universal unlock code, to save carriers the time when unlocking, they probably only generate unique codes (that you pay for) when you want to unlock the phone yourself.
Sent from my LM-Q710.FGN using Tapatalk

theharshnemesis said:
Probably leaked universal unlock code, to save carriers the time when unlocking, they probably only generate unique codes (that you pay for) when you want to unlock the phone yourself.
Sent from my LM-Q710.FGN using Tapatalk
Click to expand...
Click to collapse
I agree (you're the 1st to even suggest that) about the code. dont knowhow to include " , ". Can't find it on the M9 the code was left on.
but phones (Samsung, Sony and HTC... different secret codes?) I'm finding unlocked were dead and packed for years. Only to get the free code from carrier then to find it not even locked any more. My daughter's M9 did require a code but the 2 still in this house, didn't 2 months later. Back, way before legislation banning sim locks took effect. Rogers charged for codes even when contract was complete and up to date.
Just a question thats really bugging me.

SOLVED!
Apparently the sim carrier lock is a completely external (to the phone) system.
However, carriers will provide lock codes, but not tell you that it's not needed. In Canada anyways!
Thanks for all the feedback!