in this post I will show you how to get the Unlock Network Samsung Galaxy M21 16-digit country to unlock, unlocking SM-M215F, SM-M215F/DS, SM-M215F/DSN, SM-M215G, SM-M215G/DS (AT&T, Sprint, T-Mobile, Verizon, and U.S. Cellular) with a 16-digit code is straightforward, it is also the most secure way to Unlock Network Samsung Galaxy M21 your phone permanently. Your phone will always be unlocked even after every new firmware update of your phone. Removing the SIM-Lock from the phone using a code does not void the warranty and this is the method provided by the manufacturer.
Once unlocked, you will be able to use your Samsung Galaxy M21 16-digit network unlock code on any network in the country or abroad. Unlock code details will be emailed to you. To get the unlock code for your Samsung Galaxy M21, you need to enter the IMEI number of your Samsung phone.
Unlocking Samsung Galaxy M21 Network
The following options are available to the Unlock Network Samsung Galaxy M21 (Invalid SIM Card). If you don’t know which option to use to unlock your phone, please contact us. We will help you choose the right product for your phone.
Some carriers in some countries use a certain type of network lock on the phones they sell, a type of lock that only reads “Network Lock” instead of “SIM Network” when you insert a SIM card from another carrier. “Unlock PIN” will not have a dedicated field to enter the code.
Basically, your Samsung will tell you that the network is locked, but won’t let you enter the unlock code.
What is Carrier Lock?
Carrier lock means your SIM card is locked by your local mobile operators (MO) and Unlock Network Samsung Galaxy M21.
- Network lock”
- “SIM network unlock PIN”
- “SIM password”
- “SP lock”
- “Phone freezes SIM unavailable”
Scenario: If you have a postpaid plan with mobile operators (MOs), your phone is locked with them and you cannot use a SIM card from other operators, and it depends on whether the device can be used even after the end of the postpaid contract. Further details will be provided by your Mobile Operators (MOs).
What is another lock?
A different lock means that you cannot use a device purchased in another region, as it must comply with the rules governing that region and be approved.
Scenario: Unlock Network Samsung Galaxy M21 You bought a device from another region and can’t use it when you come to another Region. You must check the local rules and guidelines of that region as these will be followed first. And the service center can’t help to unlock the network because the rule of one Region always applies.
What is a network lock?
Network Lock or Region Lock means that your phone is locked to the region where you purchased it.
Scenario: Samsung Galaxy M21 Network Unlock You purchased your phone from another country through an official channel and didn’t unpack it until you went to another country. Now you want to use it and it will prompt “Network Lock” Samsung Galaxy M21 Network Unlock. No need to worry. This is a safety mechanism where you should insert a local SIM card from the country of purchase to activate the device before transferring/shipping it to another country.
Samsung Galaxy M21 Network Unlock Codes
If you see the “Enter Network Lock Control Key” or “SIM Network Unlock PIN” on the screen.
If the message “Unsuccessful” appears, you have tried to enter the unlock code several times.
In this case, enter:
- *2767*3855# to reset your Phone.
- Enter your Unfreeze code (MCK) into the SIM network to unlock the PIN.
- It will show you the message “Unsuccessful,” which is expected.
- Now, enter your unlock code and then tap Unlock.
If an Invalid SIM card message appears on the screen:
- Enter the code below (Replace Network (NCK) with the actual code)
- #0111*Network (NCK)#
- You need to type the Unfreeze code (MCK) in the “Phone freeze screen” section. If nothing happens, you can tap the Call button or # after entering the code.
If the SP lock message appears:
- You will be asked for the SPCK code
- Enter the SPCK code.
If the SIM password message appears:
- When prompted, enter your unfreeze code and the phone will be unlocked.
If the SIM lock-enter password message appears:
- Enter the code below (enter your actual code in (MCK))
- #0149*Unfreeze (MCK)#
If the “Network Unlock PIN……contact your service provider” message appears:
- Turn on your Samsung phone without inserting the SIM card.
- Dial #7465625638#
- Enter your Unfreeze code (MCK)
- A message will appear: “Unsuccessful.”
- Now, you need to enter the network unlock code.
If a Phone Freeze message appears on the screen when you try to use a SIM from a different network, then:
How to Unlock Network Samsung Galaxy M21 Using SamKey?
Use this server only for Samsung phones that require an unlock Network Samsung Galaxy M21 Using the SamKey code.
SamKey Server Credits enable quick and easy Unlock Network Samsung Galaxy M21 of AT&T, Sprint, T-Mobile, Verizon, and U.S. Cellular of Samsung phones without a special box or dongle, Supports Android 4, 5, 6, 7, 7.1, 8.0, 8.1, 9, 10, 11, 12, and Android 13 thankyou.
Please do not confuse SamKey Server Credits with SamKey TMO Server Credits and note that it does not support SamKey TMO software (TMO software supports Samsung Samsung phones that do not require an unlock code).
Step 1- How much credit do you need, see the list of Credit Models FROM the SUPPORTED MODELS Tab
Step: 2- Purchasing 3 or 6 credits depending on your Samsung model, we will send you a new SamKey username and password (for returning clients, just enter the old username and password you used before)
Step 3- Warranty void must be “” to read the unlock code correctly.
Step 4- Download the software from the Download tab.
Step 5- Use the username and password you have already purchased.
Step 6- Press read codes and then more software instructions to Unlock Network Samsung Galaxy M21 for solved Invalid SIM Card.
Samsung Galaxy M21 “SM-M215F, SM-M215F/DS, SM-M215F/DSN, SM-M215G, SM-M215G/DS” Sim Network Unlock Pin
- Navigate to Settings
- Select Biometrics and security
- Tap on Other security settings
- Tap “Set up SIM card lock.”
- Tap “Lock SIM card
- Enter your SIM card PIN
- (Note: The default PIN is 1234)
–= SamKEY Rules, Conditions, Policy =–
for Unlock Network Samsung Galaxy M21 (Invalid SIM Card):
-) It’s not allowed to Unlock Factory Unlocked (SIM-Free) Devices
-) It’s not allowed to Unlock phones that are already Unlocked
-) It’s not allowed to Unlock phones with Fake IMEI (Changed IMEI)
-) It’s not allowed to Unlock phones with Modified NvData (R&D Purpose)
-) It’s not allowed to Monitor SamKEY using Sniffers/Monitoring Tools
-) It’s not allowed to Debug SamKEY using Debugging Tools
-) SAMSUNG Developers are NOT allowed to use SamKEY
If you violate our policies, your Account will be blocked & You will be blacklisted!