Planning on traveling and need to put a local SIM card into your Galaxy 3? Want to change carriers but keep your phone? You may need to unlock your phone in order to use a different SIM card. There are couple ways to do this with your Galaxy 3. If your carrier won’t unlock it for you, there are couple of other methods you can try. Check out this guide to learn how.
First Trick : Unlocking Through Your Carrier
Method 1: Contact your network provider and request an unlock code. In some cases the network provider won't supply the unlocking code until your contract is over, or you have spent a specific amount of time with them. If your provider does not supply the code, try one of the other methods in this guide.
Carriers may be more likely to unlock your phone if you explain to them that you are traveling abroad soon, and need to buy a SIM card at your destination for local service.
Method 2: Enter a SIM Card from a network that does not work with your mobile phone.
Method 3: Power your Samsung phone on. You will be asked for an unlock code.
Method 4: Enter the unlock code. Once you have, your device will begin to receive service from the new provider. If you don’t have service, contact your new provider, and check that you can get reception I your current area.
Second Trick : Unlocking Without Carrier Approval
Method 1: Update your phone. Your phone must be running Android 4.1.1 (It doesn't work with some Android 4.3 either) or later in order for this method to work. You can check your device’s version by opening Settings, and then scrolling to the bottom and selecting About Device. Look for Android Version to find your version number.
To update your phone, open the Settings and then scroll down to About Device. In the next menu, select System Updates and then Check for Updates. Your phone will attempt to update over the network automatically.
Method 2: Open the dialer. You will need to enter a code in the dialer to open the Service menu. Once the dialer is open, enter the following code: *#197328640#
Method 3:Select [1] UMTS. After you enter the code, the phone will automatically open the ServiceMode menu. From here, select [1] UMTS.
Tap the menu selection on your screen to select it. If you select the incorrect option, press the Menu button on your phone and select Back.
Method 4: Open the Debug menu. In the UTMS menu, select [1] DEBUG SCREEN. In the Debug menu, select [8] PHONE CONTROL. In the Phone Control menu, select [6] NETWORK LOCK.
Method 5: Select [3] Perso SHA256 Off. After you select this option, wait about 30 seconds. Press the Menu button and select Back. Choose [4] NW Lock NV Data INITIALLIZ.
Method 6: Wait and reboot. Once you have selected [4] NW Lock NV Data INITIALLIZ, wait about one minute and then reboot your phone. You won’t receive any confirmation that the process worked.
Method 7: Put in your new SIM card. Make sure the card is not from your old carrier. If you are not prompted to enter an unlock code, then the process worked. Check your phone’s service to make sure that it worked correctly.
Second Trick : Unlocking Using A Paid Website
Method 1: Get your phone's IMEI number by typing *#06# into your keypad. A screen will appear showing the code. Make note of this number for later use.
Method 2: Find a paid unlock service. There are multiple sites online that offer to unlock your phone for a fee. Read reviews and make sure that other customers have been satisfied with the service. You will need to provide your phone’s IMEI number.
Most of these services operate in a legal gray area since the legality of unlocking phones is up for debate.
Method 3: Wait for your new unlock code to arrive. Depending on the service, this could take a few hours or a few days. You may receive your code via text, email, or phone call.
Method 4: Put in your new SIM card. Make sure the card is not from your old carrier. When you are prompted to enter your unlock code, enter the code your received from the website. Verify that you have service and that the code worked correctly.
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