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How To Unlock Samsung Cdma Phone

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Knowing whether or not your Samsung phone is network locked can come handy in certain situations. One such situations can be the time when you’re trying to buy a preowned phone. Learn what network unlocked means and other things related to it.

  1. If your hybrid CDMA-GSM phone is locked to a specific GSM network carrier (T-Mobile, for instance), in order to use a GSM SIM card issued by an alternate GSM network carrier, the phone’s SIM lock has to be unlocked using the phone’s unique SIM unlock code.
  2. We supply Samsung unlock codes for 4,826 Samsung cell phone models. Since launching this phone unlocking service, over 153 customers have already received Samsung unlock codes. It doesn’t matter if it's an old Samsung, or one of the latest releases, with UnlockBase you will find a solution to successfully unlock your Samsung, fast.
  3. It is impossible to unlock the device running on the CDMA network. Only the GSM network lets you unlock your phone. It is not sure whether this method will work or not but you may want to at least give it a try. Step 4: Open Dialer. To access the Service menu, you will have to enter the Samsung SIM network unlock Samsung PIN.

What does network unlocked mean?

Samsung devices are usually made-to-order by carriers. This means that Samsung build their devices according to specifications of carriers that buy them. In some cases, “global” or “universal” or “international” Samsung devices may be built for those wanting to have a generally “generic” device. Carrier-branded devices show the logo of the carrier and is generally custom made for its services. Thus, you’ll see that Verizon Samsung devices have the Verizon logo on them as well as Verizon proprietary apps installed. A modified Android firmware by Verizon is also installed on the device, which is also tailored for Verizon specifications. Such specifications include Verizon-specific network configuration too. This means that the phone may not work with other networks. This is what network locked means. Fortunately, most Verizon devices are network unlocked these days so they may work right off the bat if you use them in compatible network.

Unlocked Samsung Cdma Phones

How to check if your Samsung phone is network locked

There are two ways to check if your Samsung device is network locked or not.

Method 1: Insert a different SIM from another carrier

Samsung

This is the easiest way to know if your Samsung device is network locked or not. SIM card is carrier-specific so if another one is inserted to your phone and shows one of the messages below, it’s not unlocked at all. Your Samsung phone is network locked if it shows these messages:

  1. SIM Network Unlock PIN
  2. Enter Network Lock Control Key
  3. Network Locked

In some cases, “Emergency calls only” will be shown on the status bar to indicate the same situation.

Once you inserted a valid SIM card to the phone, try to place a call and see what happens. Make sure to take note of the error if you get one. You can then use Google to search for the meaning of the said error. Normally, if the SIM card works and your phone has been unlocked properly, your first call should go through without a problem.

Method 2: Use the Phone dialer

For some select Samsung devices, dialing this code will show you if it’s network locked or not: *#7465625#

If your phone shows an a screen with these three items, check out the explanations below to know what each of them means:

[ ] Network lock

[ ] Subset lock

[ ] SP lock

If all three items are indicated as OFF, then your Samsung phone must be network unlocked.

If Network lock says ON, then your Samsung device is network locked.

If Subset lock is ON, then your Samsung device has to be unlocked and requires a code from the original carrier.

If SP lock is ON, then your Samsung device has to be unlocked and requires a code from the service provider. Some third party retail shops can provide you this code.

If nothing happens when you dial *#7465625# you can assume that your phone’s firmware does not allow the code, or its service menu has been disabled.

What network unlocked is NOT

Having a network unlocked device does not mean it’s fully compatible with any other networks out there. Network unlock is only a modification at the software level to allow the device to use another network. If your Samsung device is network unlocked but its hardware is not compatible with the network you’re trying to connect to, it will not work. Any Samsung device has a specific radio frequency so if the other network has a different frequency band, your phone won’t be able to “talk” to the tower at all.

A network unlocked Samsung phone also does not mean that all features in the device can work normally. For example, a lot of Verizon devices may not allow MMS or has trouble with mobile data when used outside Verizon networks. This is because Verizon’s software is coded differently and sometimes, there’s no way to modify them effectively.

Other reasons why a phone may be network locked

Aside from the fact that carriers may not voluntarily unlock their device, other factors may come at play.

Unsettled bills. This is a common reason for many network locked phones sold online. Some people may want to get rid of their phones and sell them online to ignorant users. The thing is, many of phones being sold online are carrier-branded with unpaid bills associated with them. In other words, the original owner may have intentionally tried to sell their phones despite the fact that they haven’t fully paid their subscription yet. If that’s the case, an unwitting buyer may find out too late that their purchased device may not be used in their own network because it still needs to be unlocked by the original carrier.

Blacklisted. In some cases, phones may be reported as stolen or lost by their original owner. This will prompt the carrier to blacklist the said device. If a device is blacklisted, it can no longer use any cellular services like texts, calls, or mobile data. Before you buy any preowned Samsung device, be sure to check if its IMEI (International Mobile Equipment Identity) number or ESN (Electronic Serial number) is blacklisted. You can either use a website to check it, or contact the original carrier.

General instructions (will work for most phones):

How To Unlock Samsung Cdma Phone Unlocked

  1. Turn off your Samsung phone
  2. Insert a non-accepted sim card (different from the original carrier).
  3. Turn on the phone.
  4. Slide to unlock and it will ask for the unlock code
  5. Enter the unlock code you obtained from UnlockRiver.com
  6. Your phone is now fully unlocked!

If you enter an non-accepted Sim Card and your phone does not prompt to enter Unlock Code:

Method 1:

  1. Go to the dial screen and press #7465625*638*#
  2. Once prompted for code, enter 8 digit Unlock Code provided by unlockriver.com.

Method 2:

  1. Turn off your Samsung phone
  2. Insert a non-accepted sim card (different from the original carrier) and turn your phone back on.
  3. When prompted for the unlock code type the UNFREEZE code provided. If you are not prompted, go to your dial screen and type the UNFREEZE code, now press enter, send or call. You will receive an unsuccesfull message, don't worry.
  4. Once the phone freeze is disabled, the Network lock or SP Lock screen will appear
  5. For Network lock enter the UNLOCK code provided. For SP Lock enter the SERVICE PROVIDER code
  6. Your phone is now fully unlocked!

If you get 'unsuccessful' again then hit Dismiss button and type *2767*3855# on phone keypad and try this procedure again (CAUTION! This will reformat all your data!).

Method 3:

  1. You can try this method without the sim card or with the original sim card
  2. Type #7465625*638*CODE# (CODE is the Unlock Code we sent you)
  3. Phone deactivated message means its unlocked

Method 4:

  1. You can try this method without the sim card or with the original sim card
  2. Type: #0111*CODE# (CODE is the Unlock Code we sent you)

How to enter unlock code on Samsung models: SGH-A127, SGH-E840, SGH-F210, SGH-J600, SGH-T749

  1. Turn ON your phone without Sim Card
  2. Type #0111*CODE# (CODE is the Unlock Code I sent you)
  3. Device should say 'Network Lock Deactivated'
  4. The phone may reboot and the unlock is completed

How to enter unlock code on Samsung SGH-A877

  1. Insert an Authorized Sim Card and turn ON your phone
  2. Device must be in Portrait mode. Hit the Dial button on the touch screen.
  3. Type #7465625*638*CODE# (CODE is the Unlock Code we sent you)
  4. Device should say: 'Network Lock Deactivated'
  5. Phone may automatically reboot

How to enter unlock code on Samsung models: A737, A777, Blackjack SGH-i607, SGH-i616, SGH-i617, SGH-i627, SGH-i637, SGH-A877

  1. Insert an Authorized Sim Card and turn ON your phone
  2. Type #7465625*638*CODE# (CODE is the Unlock Code we sent you)
  3. Device should say: 'Network Lock Deactivated'
  4. Phone may automatically reboot

NOTE: If you are unable to connect to service provider or unable to make outgoing calls or receive messages, this has nothing to do with your phone being locked or not, you need to force the Blackjack to change to GSM mode, this can be done as follows:

  1. Type *#1546792*#
  2. Select Option 3 Network & Call Settings
  3. Select option 5 Network Mode
  4. Select GSM
  5. This should resolve your problem.

How to enter unlock code on Samsung phones from: AT&T / Cingular BlackJack

  1. Insert a non-accepted Sim Card and turn ON your phone
  2. Power on the device. Wait approximately 30 seconds until the Sim Lock application appears (the delay may be longer if the user has already attempted an unlock with the wrong code)
  3. Enter the unlock code in the blank field
  4. Press Ok. If the Unlock Code is incorrect, an error dialog will appear. After pressing Ok on this dialog, the user has to re-enter the Unlock Code after delays (see above in Device Specific Information). If the Unlock Code is correct, a success dialog will appear.
  5. Press Ok
  6. The device is now unlocked and should continue booting

NOTE: If you are unable to connect to service provider or unable to make outgoing calls or receive messages, this has nothing to do with your phone being locked or unlocked, you need to force the BlackJack to change to GSM mode, this can be done as follows:

  1. Power on your Phone
  2. Type *#1546792*#
  3. Select Option 3 Network & Call Settings
  4. Select option 5 Network Mode
  5. Select GSM

How to enter unlock code on Samsung Models: i450 & i560

  1. Turn ON your phone without Sim Card
  2. Type #PW+Unlock Code+1#

The letter P appear after you press star button (*) three times quickly

The letter W appear after you press the star button (*) four times quickly

The letter + appear after you press the star button (*) two times quickly

How to enter unlock code on Samsung J600

Unlock Code is entered as: #0149*UNFREEZE# or #0111*UNLOCK#

How to enter unlock code on Samsung SGH-P207

  1. Reset to original factory setting by typing *2767*3855#, your phone will reboot
  2. Insert a non-accepted Sim Card and turn ON your phone
  3. A Wrong Sim message will appear
  4. Enter * #9998*3323#
  5. Exit white screen appear, tap the right soft key, (occasionally it will not go to the next screen, if so press the down key)
  6. A menu will appears, scroll down to the malloc Fail option, this will reboot, and normal service screen will appear
  7. Enter *0141# and press the green Call key
  8. Personalized screen appear, the name of the current Sim Card provider will appear on the screen
  9. Turn phone OFF, and then turn back ON
  10. Go to menu by tapping left soft key
  11. Settings is in bottom right hand corner
  12. Select option 7 = Security
  13. Select option 6 = Sim Lock
  14. Select option 1 = Disable
  15. Enter 00000000 (eight zeros), the message will come up Sim lock disabled with a check mark; your phone is now unlocked to use with other carriers.

How to enter unlock code on Samsung SGH-T609

  1. Turn ON your phone without Sim Card
  2. Type #011*CODE# (CODE is the Unlock Code we sent you)
  3. Device should say: 'Network Lock Deactivated'
  4. Phone may automatically reboot

How to enter unlock code on Samsung Models: Z320i, Z510, Z650i

How To Unlock Samsung Cdma Phone To Gsm

  1. Insert a non-accepted Sim Card and turn ON your phone
  2. Type **CODE# (CODE is the Unlock Code we sent you)

Having trouble? Contact us at support@unlockriver.com