The very prospect of losing a phone password is a tiresome ordeal, which can wear your emotions to a great extent. Typing in an incorrect password is always followed suit by repeated strives at trying multiple passwords and combinations to open the phone device. This long process ultimately results in the contents of the device being unreachable warranting a whole lot of problems for the user. Even if you attempt to unlock Samsung by inserting another SIM, you will be faced with the dilemma where according to the contract your device is secured to the particular network on your phone for a fixed duration of time (What if your phone has an Invalid SIM Card?). In such a case, you will have to SIM network unlock PIN.
If you need to unlock your iPhone by removing the SIM lock, then you’d better try DoctorUnlock, which is the fast and most reliable IMEI-based unlocking for iOS.
These solutions present themselves in the form of new software updates. One such example is the Dr.fone Toolkit – Android SIM Unlock software, which can help you to SIM network unlock PIN. It is the world’s first data retrieval software and is an excellent example of a phone recovery system.
It is firstly required for you to approach the problem carefully and systematically. Initially, you are required to find a system to know for sure that your phone device is locked to find real time solutions to unlock Samsung smartphones.
The SIM Network Unlock PIN feature is a PIN code, which you need to input so as to unlock Samsung device locked in by a particular carrier. The Smartphones are generally vented off on a binding contract to a network. These are mostly sold through networks at subsidized cost to lure in customers who usually pay the amount charged by the network. We have, however, provided you with solutions through which you can unlock Samsung phone and utilize the device using your chosen network.
To confirm if your Smartphone device is genuinely locked, make sure to mirror the following steps carefully:
After completing these previous three steps, your Smartphone may request you to:
If this happens, just keep your calm as there are other viable solutions to unlock Samsung device. We can then move on to exploring the other three options of opening your phone mentioned above in their order of succession. The first method necessitates the prime SIM network unlock PIN program in the process of opening locks on Smartphones using the Dr.Fone toolkit – Android SIM Unlock software.
For iPhone users, please switch to how you can check if iPhone is unlocked.
It barely takes less than ten minutes for the Dr.fone toolkit- Android SIM Unlock software to open the SIM on your locked Samsung phone, while simultaneously managing the loss of nil data and securing its safety. The Dr.fone – Android SIM Unlock software supports a variety of phone gadgets, which climb over four hundred. This includes but is not restricted to the Samsung Galaxy S, Samsung Galaxy A, Samsung Galaxy Note, Samsung Galaxy Tab, and other such models like the Mega and the Ace3. Along with such plethora of features, it also guarantees a higher success rate than other software along with offering a 24X7 support system.
The dr. Fone toolkit software is an easy five step application occupying the least space on phones and does not eat up too much of the system’s resource system. It is easy to use software, which does not need prior technical expertise and can be used by anyone to unlock Samsung phones completely through its intelligent interface.
Step 1: To SIM network unlock PIN, start by installing and launching the Dr.fone – Android SIM Unlock on your PC. Next tap on the ‘SIM Unlock’ option.
Step 2: In case of the Samsung S3 to S7 device users, it would need a root access so that the SIM on your phone is unlocked. Link the Samsung Smartphone to the PC through a USB wire. When the Samsung phone is acknowledged by the Dr.fone software, you must tap on the Unlock option. Soon in a matter of minutes, the Samsung phone’s SIM will be unlocked effectively.
Step 3: In case of the Samsung S2 to S4 and the Note 1 to Note 3 device users, it would not need a root access to unlock the SIM on your phone. You could simply link your Samsung Smartphone to the PC through a USB wire. After the due time when the Smartphone is recognized, tap on the ‘Next’ option to proceed.
Step 4: After this, you can simply follow the steps on the Dr.fone Android SIM Unlock manual. You can set your phone in order of Service Mode< Diagnostic< USB Settings. Next, you must dial the numbers #9090#, *#0808#, or ##3424# via your Smartphone keypad. In any instance, at least one of the contacts or symbols would be effective for your purpose. Next, select on CDMA MODEM or DM + MODEM + ADB or UART [*]on your smartphone. You can click on the Unlock option after making sure that the Smartphone is set appropriately.
Step 5: After some minutes, your SIM on the Smartphone device would be automatically unlocked. After this, you are required to follow the directions all over again and choose the Normal Mode option as your phone setting in order to SIM network unlock PIN.
After matching all the conditions of the contract, you can now choose to utilize the SIM network unlock PIN offered free of cost by the operator. The conditions may involve the following:
It is noteworthy to remember that a few careers might ask you to pay a premature termination fee, in case your phone cost is fully paid off.
When you get the unlock code, the following steps are to be followed:
While following the above steps, it is to be remembered that you are within your new service center’s network range.
Prior to trying these manual options below, we would recommend you to contact the network provider. You can request for solutions along with respective recommendations. They would offer you the apt way in the case where you have paid off your Smartphone device in full along with using their free trial for at least three months.
Follow the steps mentioned below in order to unlock Samsung Galaxy 3 and Note 2:
Your device must run on the Android Jellybean 4.1.1. or older. To inspect your software version, visit ‘Settings’, go down, and hit on the ‘About Device’option and locate the Android version in which the device is run.
To update the device, click on ‘System Updates’ and the ‘Check for Updates’ options. The Smartphone device will automatically update your network. You can turn on the desired Wi-Fi network to update the device, as you did not receive connectivity on your new SIM.
When the dialer is open, you need to type in the code *#197328640#, which would unlock the service mode.
Your Smartphone will readily open the Service Mode menu after the code is entered. Then, you must choose  UMTS.
From the UTMS menu, hit on  DEBUG SCREEN. From the Debug menu, hit on  PHONE CONTROL. Next, in the Phone Control options, hit on  NETWORK LOCK.
Wait for thirty seconds after selecting this course. Click on the Menu option and choose Back. Select  NW Lock NV Data INITIALLIZ.
Restart your device: You can again turn on your device after one minute, but this will not warn you about your device unlocking. Therefore, you will need to try out your device by putting in a different SIM carrier. You will know that your phone has been unlocked successfully when you no longer receive any prompt by ‘Unlock Pin’, and thus you have finally SIM network unlock PIN.
To unlock Samsung S4 device, these steps must be followed:
This process is only for AT&T Galaxy S4s and T-Mobile devices and is indicated for stock phones. The process will not operate on customized ROMs or for the CDMA phones, Sprint, and Verizon S4’s.
Enter the code *#27663368378# when the dialer is open, which would unlock the service mode.
After entering the code, your phone will start to display Service Mode menu. In this menu, choose  UMTS.
From the UTMS menu, hit on  DEBUG SCREEN. From the Debug menu, hit on  PHONE CONTROL. Finally from the Phone Control menu, hit on  NETWORK LOCK.
The text will be shown on the screen, after selecting this choice:
SHA256_OFF > SHA256_ON
Hit on the initial sentence, (SHA256_ENABLED_FLAG). From now on, the menu will show:
MENU NOT EXIST
PRESS BACK KEY
Click on the Menu option and choose Back option.
The message from the Step 5 will now change when you revert back:
SHA256_OFF > Not Change
Select the ‘Back’ option four times to revisit UMTS main list after you press the menu button. Next, choose  COMMON and also hit on  NV REBUILD. The message below will be shown:
You can Restore Cal/NV
From NV REBUILD list of options, hit on  Restore Back-up. Your smartphone will now start to reboot, and you can unlock Samsung. You can examine your phone by entering a different SIM card of a network carrier. You have successfully SIM network unlock PIN when you do not receive the ‘Unlock Pin’ cue.
For other models of Samsung except the Note 2, Galaxy 3, and the Samsung S4, the steps mentioned below are to be followed:
Attach the fresh SIM card to the phone, to inspect if your device is locked. This is because devices sometimes arrive unlocked from the box.
To use this way, you must update your device to an Android 4.3 and older. Visit ‘Settings’ to examine software version on the phone and descend and hit on ‘About Device’to get an Android version where your phone can run.
In order to bring your phone up to date, hit on ‘System Updates’ along with ‘Check for Updates’. The phone would update the net system. Now, turn on the desired Wi-Fi system to bring your device up to date, as there was no connection on your new SIM.
It is not possible to open a phone operating on the CDMA network. It is only the GSM network, which allows you to open your device.
To open the Service mode, the device SIM network unlock PIN will need to be entered. At the moment when the dialer opens, type *#197328640#.
Choose UMTS and open the menu for maintenance. In case you select the incorrect choice, you can revert by choosing the Menu button.
Choose the DEBUG SCREEN from where you can open Debug menu.
Choose the PHONE CONTROL which will let you control the settings.
Choose the NETWORK LOCK from where you can access the checks on the SIM Lock task.
Choose the PERSO SHA256 OFF and stand by for thirty seconds. By clicking on the Menu button, you can revisit the NETWORK LOCK list.
Choose the NW LOCK NV DATA INITIALLIZ and stand by for a minute.
Restart your device: Start restarting your device after a minute. However, you will not get any notification about completion of the process. You will know that you have successfully SIM network unlock PIN when you no longer receive any prompt by ‘Unlock Pin’.
After reading these well-investigated tips and tricks, you can easily attempt to unlock Samsung device & unlock Android device, without a sweat and the need to visit service centers.