[Q] How does unlocking a phone by IMEI work nowadays?

0
June 27, 2016

There use to be free unlocking calculators for the old phone models. But it seems that it's impossible to unlock a modern phone for free. What I don't understand is how it works nowadays. You have to send the IMEI to a reseller, then wait for days (1 to 5) to get your code back.

I thought that smart hackers were profiting from their own unlocking calculators, created by themselves, but it seems that the delay getting the code is because some databases have to be accessed. And depending of the company that locked the phone that could be harder and more expensive to do.

So, how does it really work? Who are the original sellers and unlocking code creators?

Thanks!

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0
June 27, 2016

Wish I could help.I'm also having to wait for my unlock code tio be sent.all I did was call up t mobile and asked about unlocking.have them the imei.they sent it to samsung and now I'm waiting for the code for my vibrant.it was all free.

Sent from my SGH-T959 using XDA App

0
June 27, 2016

What do you mean "they sent it to Samsumg"? Is there a way to cheat companies to unlock their own phones?

0
June 27, 2016

Phones are simlocked to inibith usage of other sim cards different from the one of the operator that gave you the phone: on this we all agree BUT in all the countries it's possible to unlock the mobile after a definied time, in italy for example is 9 months under payment and 18 months for free after purchase just going to your operator: many people don't know this really simple mechanism.

Here is the function of giving them your IMEI code: the algoritmh, specific for every operator, use your IMEI to calculate a number that must be the same that is written inside your phone: that's why they ask for IMEI and OPERATOR

0
June 27, 2016

But is the algorithm really known or do unlockers get the unlock codes using insiders that work for the operator company? So this workers would illegally pick code by code from some database since they have to have the unlock codes in order give them for free after X months anyway.

0
June 27, 2016

Think they just use software generators.... nowadays also Windows versions and software that costs millions went leaked...

0
June 27, 2016

but basicly if someone would manage to flash his IMEI with other from completely different phone he no longer uses would it do the job?

0
June 27, 2016

I had the same problem with my old Samsung Jet, they wanted me to send it to them over a 30 day period costing me £25!

0
June 27, 2016

If you get the paid unlock code means the code provider get the Code from the particular Network Data base,...so it's Legal one...Then in free code generator the calculators generate the code,but the code generate by the program so it generate default codes.....I got the code for Unlocking the Phone from Network lock quickly and free of cost,i got the correct free Unlock code for my Nokia,Samsung Phones at here

www.unlock-free.com

and Unlock it........

0
June 27, 2016

I believe the reason that calculators are no longer possible is due to the fact that the manufacturer/provide uses random algorithms to generate the unlock codes, and are not based on the IMEI. That is, the unlock code can only be found in their database as they did not use the IMEI as part of the algorithm to generate the code in the first place; hence there is no way to reverse engineer them for newer/more common devices.

0
June 27, 2016

False. If this was true, then any hacker... anyone could do this. All unlock codes are based on your IMEI and phone model (carrier,country,etc).

0
June 27, 2016

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False. If this was true, then any hacker... anyone could do this. All unlock codes are based on your IMEI and phone model (carrier,country,etc).

0
June 27, 2016

Any one please help me. I have Asus Garminfone A50 locked by T-Mobile now I would like to unlock to use any sim card. IMEI:357355039003527 please help me or send unlock code to my e-mail

rojects.kimsiv@gmail.com.

Thank you

0
June 27, 2016

Believe me, it's not as easy at it seems to get SIM unlock codes. Your best bet is to find either a trustworthy site online, or call your provider and tell them you're travelling internationally and you need to change SIM cards... they may charge you but it only needs to be done once. However, if you have patience eventually someone will write an app to do it for free. But that could take months, even years. I'm currently trying to figure out a way to unlock mine without doing either of the methods outlined above and I've spent days researching this and I still am not much closer...

-AC

0
June 27, 2016

well this is my understanding the unlock code database will be having 2 primary keys 1 will be the IMEI number and another one is the key which will be used for generating the unlock code which is unknown to the outside world.

so when some one request for the unlock code the service provider, (either the phone company or thirdparty) have to refer thru this 2nd key for generating the key but since the key generation is done from the manufacture end the database is acting like a blackbox.

-cheers

0
June 27, 2016

just get your imei off the web to save you from millions of copies that are likely coming up

0
June 27, 2016

hello, some time before I digged into SONY unlock, my conclusion is that it's impossible to brute force or you really need an insider in that company.

// STEP:

// t = NCK + SALT

// h = sha256(t)

// 9.times { h = sha256(h) }

// assert(h == HASH)

// IMEI: 3535880501297

// NCK : 64776542176243

SALT and HASH are programmed in trim area, and don't know how to calculate those two, only way is to get the phone and extract them.

0
June 27, 2016

I always thought that codes were pre calculated when phones are manufacturered.

I know for some phones the ROOT AWAY app (on samsungs) takes off the sim lock.

0
June 27, 2016

@

tewilove

, your finding is sony-specific or docomo-specific? As you know the same Sony models is sold in Japan by a different operators - Docomo, Softbank and KDDI. But always with a sim lock.

With root we could read the whole TA, so we could calculate unlocking code? What do you think?

0
June 27, 2016

If they don't use the IMEI, then why do the unlockers ask for it? There should be no need for it if that was the case, unless, it's just to verify your phone model or something?

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