1. Insert an unaccepted SIM card into your phone and confirm it asks for a Master Unlock Code
2. Order your Master Unlock Code by selecting the service called: Samsung - Canada Network, Unfreeze & Master Code
3 - Switch ON your Samsung with a non compatible SIM Card,
4 - Wait for your phone to ask for "SIM Network Unlock PIN" or "Enter Network Lock Control Key",
5 - First enter your MCK code (Defreeze Key) code and hit "Unlock" button.
Note: You will get "Unsuccessful message" but don't worry that's fine when you type MCK (Unfreeze code).
6 - Now type the NCK (Network Code) and hit the "Unlock" button.
7 - Your phone is now Unlocked !
EXTRA INSTRUCTIONS: if you get an "Unlock Unsuccessful" message again after you type the NCK code (NETWORK CODE) as described above then:
WARNING: Back up your DATA before proceeding to the next steps (as your phone will be erased and restored to factory settings)
7 - Then hit "Dismiss" button and compose *2767*3855# on your phone keypad (as if you were dialing a phone number).
8 - Wait for the phone to restart, this operation will erase all data from your phone!
9 - Retry the step 1 to 5 above !
Some Samsung phones need to follow extra troubleshooting steps in order to accept the unlock code. Please follow these steps if your model is mentioned below and you previously got an UNLOCK UNSUCCESSFUL result from the regular instructions:
Samsung Galaxy S2, S3, Note, Note 2 Unlock Code Fail -[Solved]
Follow these step carefully, as long as you have the correct code it will work 100% (Your phone must be updated to the latest firmware!)
The code must be correct and the phone MUST prompt for the code.
a. Go to the Dial pad and dial *#197328640# b. Please click on number  UMTS >  Debugging screen >  Phone Control >  NETWORK LOCKc. You will see 3 optionsd. Please click on number  Perso Sha256 INFO, the screen will change slightlye. Please hit the MENU button then when the menu pops up please carefully hit BACK to return to the previous screenf. Please click on number  Perso Sha256 ON, the screen will change again to a one line messageg. Restart the phone on the screen by holding the power button and click RESTARTh. When the phone prompts for the unlock code simply enter the unlock codei. Your phone is now permanently unlocked!
What if my phone is Region locked and requires the RGCK unlock code?[Solved]
If you bought an unlocked Samsung in Europe or the United Kingdom and when travelling abroad the "unlocked" cell phone still requests an unlock code, it means that the phone was only unlocked for a specific region (Europe). That means you will need to purchase an unlock service that includes the Regional Unlock code or Region Control Key (RGCK) option that we can provide you with. It is a specific type of unlocking for Samsung equipment purchased, especially found in Europe.
"What is the PIN to unlock SIM?"
The default PIN on the sim card is 1234 or 0000, however if your phone asks for a Network PIN then it is referring to a 8 or 16 digit network unlock code which must purchased or obtained from the carrier or a 3rd party unlocking service such as canadaunlocking.com
"What does it mean when your phone asks for a SIM network unlock PIN?"
It means your phone is network locked to the original network carrier. It can not be used with any other sim cards until it gets network unlocked by inserting a 8 or 16 digit unlock code.
"What is the network unlock code for Samsung?"
The network unlock code for Samsung phones prior to 2019 is a 8 digit number, This number is calculated based on the IMEI number and is unique for every phone. Many 2019 Models require a 16 digit network code. Some Samsung models require the defreeze code to be entered first followed by the network code.
"What is the 8 digit PUK code?"
The 8 digit puk code is referring to the network PUK. PUK stands for Personal Unlock Key. The Network PUK can be obtained from your network carrier or a 3rd party unlocking company such as CanadaUnlocking.com
"How do I find out my PUK code for my SIM card?",
The defaults PUK for your sim card is 1234 or 0000. Some carriers have set a default PUK which is written on the original sim card or sim card packaging. When In doubt call your network provider and they can give it to you.
"Can you unlock your phone for free?"
It is only possible to unlock your phone for free by calling your original network carrier. If you meet their requirements they will give it to you for free otherwise they will charge a fee. Often you can get it cheaper at third party unlock services such as CanadaUnlocking.com. The old days of free online calculators do not work on new security phones since 2012
"How does a SIM card get locked?"
A SIM card gets locked from inserting the wrong PUK code too many times. In such cases you would need to purchase a new SIM card.
"Can I unlock my SIM card?"
Yes you can remove the PUK from your sim card by entering the required 4 digit PIN. Be careful when entering your PUK code. If you enter the wrong PUK code 10 times, your SIM card will be blocked permanently. In that case you will need to buy a new SIM card. For network unlocking you would need to unlock your device to accept different sim cards at canadaunlocking.com
"Does removing a SIM card unlock a phone?"
Removing your SIM card will not unlock your phone. To network unlock your phone you will need to enter the 8 or 16 digit network unlock code purchased at canadaunlocking.com
"How do I get my phone unlocked?"
To get your phone network unlocked you need to insert the 8 or 16 digit network unlock code. Every phone has a unique unlock code based on it's IMEI number. You can purchase this code from canadaunlocking.com
"What happens if you put a SIM card in a locked phone?"
If you put a sim card in a locked Android phone then the phone will automatically prompt for a SIM NETWORK UNLOCK PIN. You can purchase this code from canadaunlocking.com If you a put a SIM card in an iPhone then it would simply say "sim card not supported"
"Can you put a SIM card in a locked phone?"
Yes you can put a SIM card in a locked phone but you will not be able to make or receive phone calls until you have network unlocked the phone.
"How do you know if a phone is unlocked?"
The simplest and most reliable way to know if your phone is unlocked is to insert a SIM card from one or more different companies. you can make a phone call with the new simc ard it means that your phone is network unlocked, If the phone prompts for a code it means that it is locked to a particular network.
"Can you unlock a carrier locked phone?"
Yes almost all phones can be carrier unlocked by inserting the correct sim network unlock pin which can be obtained at candaunlocking.com
"What is the difference between locked and unlocked phones?"
Locked and Unlocked phones refers to network lock which is a restriction placed on the phone by the original network carrier which does not allow any sim cards from other carriers to work in the phone. Once the phone has been UNLOCKED then it can work on all supported phone companies in the world.
"Does factory reset lock phone again?"
By factory resetting your network unlocked phone the phone will remain unlocked. A network unlock is permanent and can not be relocked afterwards.
"How do you check what network a phone is on?"
The easiest was is to test different sim cards in the phone. If you put in a sim card into a phone that it is not from, then it will prompt automatically for a sim network unlock code. If it doesn't prompt for this code then it means the phone is from that network provider. You can also purchase a imei check service to find the original carrier.
"Why does my phone say no service?"
No service can mean that your phone is blacklisted, not supported by the network or has a firmware issue. Sometimes, your phone will stop saying No Service if you remove your SIM card and then put it back in again. You can also try to restart your phone and reset the network settings by going to settings the general then reset then Reset network settings.
"How do I fix my phone if it says no service?"
If it says no service because it it blacklisted then you have to unblacklist it by providing the original proof of purchase. If it says no service due to a firware glitch then remove the SIM card, re-insert it and restart your phone. You may also try to reset the network settings by going to settings the general then reset then Reset network settings.