How to Unlock Samsung Galaxy S21 Ultra: A Comprehensive Guide (2023)

Welcome to our guide on how to unlock the Samsung Galaxy S21 Ultra. If you're looking to retain your Samsung S21 but switch to a different provider, you may encounter difficulties if your original carrier has locked the phone. However, there are ways to unlock your Samsung Galaxy S21 Ultra 5G and use it with any carrier of your choice. In this article, we will provide you with the finest methods to unlock your Samsung Galaxy S21 Ultra and determine if your SIM is locked. Let's get started!

Part 1: Samsung Galaxy S21 Vs. Samsung Galaxy S21 Ultra

Before we dive into the unlocking process, let's take a moment to compare the Samsung Galaxy S21 and the Samsung Galaxy S21 Ultra. Both devices were introduced by Samsung in January 2021 and offer similar designs with distinct prices, specifications, and features. Here's a quick comparison of the two options:

Feature Samsung Galaxy S21 Samsung Galaxy S21 Ultra
Display Size 6.2" 6.8"
Rear Camera 12 + 12 + 64 MP Triple 108 MP Quad
Front Camera 10 MP 40 MP
Resolution 1080 x 2040 pixels 1440 x 3200 pixels
Storage 128 GB 256 GB
RAM 8 GB 12 GB
Battery 4000 mAh 5000 mAh
Face Unlock Yes Yes
Sensors Barometer, Gyro, Accelerometer, and Compass Barometer, Gyro, Accelerometer, and Compass
5G Yes Yes
Wireless Charging Yes Yes

Now that we have a better understanding of the devices, let's move on to checking if your Samsung Galaxy S21 Ultra is SIM locked.

Part 2: How to Know if My Samsung Galaxy S21 Ultra is SIM Locked?

Before unlocking your Samsung Galaxy S21 Ultra, it's important to determine if your device is SIM locked. Follow these steps to check:

  1. Switch mobile networks by inserting a SIM card from a different provider into your phone.
  2. Turn on your phone.
  3. If your Samsung Galaxy S21 Ultra is locked, a prompt will appear reading "Sim Network Unlock PIN" or "Enter Network Lock Control Key" and request the unlock code.

If you see the prompt mentioned above, it means your device is SIM locked and you'll need to proceed with the unlocking process. Let's move on to the next part.

Part 3: How to Unlock My Samsung Galaxy S21 Ultra, Any Country, Any Carrier?

Unlocking your Samsung Galaxy S21 Ultra is possible through various methods. Here are three reliable options:

1. is an automated solution that makes unlocking your cell phone a breeze. Follow these steps to unlock your Samsung Galaxy S21 Ultra with

Step 1: Go to on your preferred browser and select your phone's brand, model, and service provider. Step 2: Click on "Unlock Your Phone" and enter the IMEI number of your phone. You can find the IMEI number by dialing *06# in your phone's dialer. Step 3: Click on "Check Unlock Now" and wait for the processing to complete. Once done, you will receive the Samsung Galaxy S21 unlock code.

2. Simply Unlocked Simply Unlocked is a popular service that specializes in Samsung unlock codes. Follow these steps to unlock your Samsung Galaxy S21 Ultra with Simply Unlocked:

Step 1: Visit the official site of Simply Unlocked and click on "All Samsung Models." Select your country in the next window. Step 2: Choose your phone network and click on "Process Now." Step 3: Provide the necessary details, including your phone's name, IMEI number, email, and mobile number for SMS updates. Accept the terms and conditions. You will receive the unlocking code within 1-2 working days.

3. offers unlocking services for most GSM networks worldwide. Follow these steps to unlock your Samsung Galaxy S21 Ultra with

Step 1: Go to and enter your phone model, mobile network, and email. Step 2: Dial *06# in your phone's dialer to get the IMEI number. Enter the IMEI number on the website. Step 3: Accept the terms and conditions and click on "Unlock Now." Choose your preferred payment method and complete the payment. You will receive the unlock code within a few hours or 1-2 working days.

Part 4: FAQs about Locked Samsung Galaxy S21 Ultra

  1. What is the Difference Between Locked and Unlocked Samsung Phone? Locked Samsung phones have a software code that restricts the use of SIM cards from other cellular operators. Unlocked Samsung phones, on the other hand, can be used with any GSM carrier worldwide.

  2. How to Unlock Samsung S21/S21 Ultra Screen Lock? If you want to unlock the screen lock on your Samsung S21/S21 Ultra, we recommend using Dr.Fone - Screen Unlock. This tool allows you to bypass pattern, PIN, password, and fingerprint locks. Follow these steps to remove the screen lock:

    Step 1: Download and install Dr.Fone - Screen Unlock on your computer. Connect your Samsung Galaxy S21/S21 Ultra to your PC via a USB cable. Step 2: Launch the tool and select "Screen Unlock" from the main interface. Follow the on-screen instructions to put your phone in download mode and download the required recovery package. Step 3: Once the recovery package is downloaded, click "Recover Now" to remove the screen lock from your Samsung S21/S21 Ultra.

In conclusion, unlocking your Samsung Galaxy S21 Ultra is possible with the help of reliable unlocking services such as, Simply Unlocked, and By following the steps provided, you can switch carriers and use your Samsung Galaxy S21 Ultra with any GSM network.

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