- Contact your carrier's customer service line. If you meet your carrier's requirements, you may be able to unlock your phone for free.
- 2Inquire about unlocking your phone. The requirements for unlocking vary from carrier to carrier, but generally you will need to have been with them for a set amount of time (usually at least 3-6 months), and the phone will need to have been completely paid off.
- You may be charged an early termination fee if you haven't paid off the phone's full cost yet.
- 3Wait to receive the code. You will either be given your unlock code over the phone, or it will be emailed to you.
- 4Insert the new SIM card in your phone. You will need to have the SIM card from your new carrier inserted in order to receive the prompt to enter your code.
- The location of the SIM card slot varies, but it is usually behind the battery or in a tray along the side of the phone. You may need a small paperclip to eject the tray.
- 5Enter your unlock code. When you power your phone on with the new SIM card, you will be prompted for your unlock code. Make sure to enter the code correctly, as entering the incorrect code too many times may lock you out of your phone.
- Make sure that you are within the coverage area of your new service when unlocking the device.
2
Unlocking Through a Paid Service
- 1Write down your phone's IMEI number. This is the identification number for your phone, and will be required by the unlocking service.
- You can get the IMEI of most phone by dialing *#06#.
- Many phones have the IMEI printed on the back or underneath the battery.
- You can also find the IMEI on the phone's original packaging.
- 2Find a service. There are a large number of companies online that will sell you the unlock codes for your phone for payment. Different services offer to unlock different devices.
- Avoid any site that will claim to unlock your phone for completing surveys or offers. These are often scams designed to gather as much personal information about you as possible.
- 3Research your choice. Before paying any company to unlock your phone, research the company as much as possible. Find user reviews, and ask around in phone enthusiast forums. Always be wary of potential scams, especially when you are paying to skirt your carrier's policies.
- 4Pay for the service. Oftentimes, you may have to wait several hours to a couple days in order to receive the unlock code. This is because these companies often have people working for the carriers that provide the codes for them.
- Be sure to select all of the correct information about your device so that you get a code that works for your phone.
- 5Insert your new SIM card. In order to be able to enter the unlock code, you will need to insert the new SIM card for the service you are switching to. SIM card slots are located in a variety of locations depending on the phone you are using. Typically they can either be found underneath the battery or as a tray along the side of your phone.
- You may need a small paperclip to eject the tray.
- 6Enter the code. After inserting your new SIM card, turn your phone on. You will be prompted for the unlock code. Enter the code you received and check to make sure that you have connectivity.
- It may take a minute or two for your phone to connect to the new network. Make sure that you are inside the coverage area.
3
Unlocking Samsung Galaxy 3 and Note 2
- 1Make sure your phone is up to date. Your phone must be running Android 4.1.1 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. Your version will be listed under the Android Version heading.
- 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 search for any available updates and if it finds any they will be downloaded and installed.
- 2Open 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#
- 3Select [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.
- 4Open 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.
- 5Select [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.
- 6Wait 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. You can test the phone by putting a SIM card in from another carrier. If you are not prompted to enter an unlock code, then the process worked.
4
Unlocking Samsung Galaxy S4
- 1Make sure your phone is compatible with the method. This method is for T-Mobile and AT&T Galaxy S4s. It must be done on a stock phone, custom ROMs will not work.
- This method will most likely not work for CDMA phones, such as Sprint and Verizon phones.
- 2Open 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: *#27663368378#
- 3Select [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.
- The Service Mode menu is a diagnostic menu for your phone, and is very powerful. Only make changes to settings specified in this guide. Changing any other settings may result in your phone becoming inoperable.
- 4Open the Debug menu. In the UTMS menu, select [1] DEBUG SCREEN. In the Debug menu, select [6] PHONE CONTROL. In the Phone Control menu, select [6] NETWORK LOCK.
- 5Select [3] Perso SHA256 Off. When you select this option, you should receive the following displayed on your screen:
SHA256_ENABLED_FLAG[1]
SHA256_OFF => SHA256_ON - 6Tap the first line. Select SHA256_ENABLED_FLAG[1] with your finger. The phone should display:
MENU NOT EXIST
PRESS BACK KEY
In order to continue, press the menu button on your phone and select Back. - 7Make sure that the settings changed correctly. When you back up, the message from Step 4 should now be displayed as:
SHA256_ENABLED_FLAG[0]
SHA256_OFF => Not Change - 8Return to the UMTS menu. Press the menu button and select Back four times until you are back in the UMTS Main Menu. Select [6] COMMON and then select [6] NV REBUILD. The following message should be displayed:
Golden-Backup exist
You can Restore Cal/NV - 9Restore the backup. In the NV REBUILD menu, select [4] Restore Back-up. The phone will automatically reboot. At this point the phone is unlocked. You can insert a SIM card from another carrier to use another service.
5
Unlocking Old Nokia Phones (DCT3 & DCT4)
- 1Find your IMEI number. You can dial *#06# to display your phone’s IMEI number. You can also find the number printed in the battery cradle behind the removable battery. The IMEI is always 15 digits.
- 2Visit a free unlock website. Nokia phones are some of the only ones that can be unlocked by a generated number online. There are a variety of websites that offer unlock codes for free. You will need to know
- 3Enter your phone’s information. Enter the IMEI number, phone model, country of service, and service provider. The website will generate an unlock code specific for your phone.
- You can find your phone model by dialing *#0000#
- 4Enter your unlock code. To enter your newly generated unlock code, insert the SIM card from a different carrier. Your phone will prompt you to enter the code.
Community Q&A
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- How do I unlock the Samsung Android network?wikiHow ContributorRequest an unlock code from the carrier that has placed the lock on the device.
- How can I unlock my Verizon Samsung model SM-B311V?wikiHow ContributorCall your carrier and have them tell you how to unlock it. Usually they have to have you go through the developer settings. (Don't forget to have a good reason for unlocking the phone. i.e. you have paid for the phone and are leaving the carrier. Do not tell them that you want to sell it, they will not help you if you do.)
- How do I unlock a Samsung S5 cellphone?wikiHow ContributorIf it has a password that you don't know, it is impossible to unlock the phone. You will need to manually reset the phone so that you can use it. You can do the manual reset at any phone shop.
- What should I do if I have lost my phone password?wikiHow ContributorYou can reset it using your Apple ID. Keep in mind that this will erase all your data.
- How do I unlock a Nokia 220?wikiHow ContributorIf you reset the phone, there will be no password to get in, allowing you access. You will, however, have to download all your apps again.
- Is it possible to use both AT&T and another service if I am traveling to a country in which I can't use AT&T?Thành VietfonesYou can if you have an unlocked phone. If your phone is locked by AT&T, you cannot use any simcard except an AT&T simcard. An unlocked phone can use any sim.
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