How To Fix OEM Unlock Missing on Meizu 21 Pro?

Original Equipment Manufacturer (OEM) Unlock is a function on Android devices. It allows you to unlock your phone bootloader. A bootloader or bootstrap loader gathers the operating system files, loads them into memory, and hands over control, essentially starting your device. Unlocking the bootloader assists you in installing custom ROMs, flashing custom kernels, and rooting your phone.

However, this freedom comes with some trade-offs. Most manufacturers will void your warranty if you unlock the bootloader, and it can also make your phone face higher risks of malware and other security threats. Additionally, it can be difficult to relock the bootloader once you unlock it.

If you encounter the OEM unlock missing on your Android phone despite wanting to unlock your bootloader, this article can help. You will learn the step-by-step guide for the different methods to fix the missing OEM unlock option. Before diving into solutions, let’s explore why this option might be unavailable in the first place.

Part 1: Why Is OEM Unlock Missing on Your Device?

Finding that OEM Unlock is missing on your Android phones can be frustrating, particularly if you plan to modify your software or install a custom ROM. But don’t worry. There are several possible explanations for this. Let’s explore some of the most common reasons:

Manufacturer Restrictions

The Missing OEM Unlock option can often be due to restrictions imposed by your device’s manufacturers. They may intentionally remove this option to safeguard device security and compatibility. It is common with carrier-locked devices. As a result, the OEM Unlock option may not show.

Bootloader Already Unlocked

In some cases, the Android OEM Unlock Missing issue arises when the bootloader has already been unlocked. Relocking the bootloader might make the option reappear. But exercise caution as this process can erase device data.

Developer Options Not Enabled

It might seem obvious, but sometimes the simplest things get overlooked. The OEM Unlock option can only be accessed from within Developer Options. If this menu isn’t enabled, you won’t see it.

Carrier-Locked Devices

The OEM Unlock Missing issue can also occur if your device is carrier-locked. Carriers often impose restrictions to prevent users from switching networks, and bootloader unlocking is one way to do that. Unfortunately, the missing OEM Unlock option is usually intentional, and unlocking your device can be more complicated.

Security Features

Enhanced security features, like Samsung’s KNOX, can sometimes conceal the OEM Unlock option. Temporarily turning off these features might show the option, but it’s crucial to be aware of the potential security implications of doing so.

Corrupted Bootloader

A corrupted bootloader can also lead to the Android OEM Unlock missing problem. The bootloader plays a role in the boot process, and if it’s damaged, it might not display the necessary options. This can be caused by software glitches, failed flashing attempts, or even hardware issues. In this scenario, you might need to consult your device’s manufacturer or a technical specialist to help repair or re-flash the bootloader.

Connectivity Issues

A poor connection between your device and computer can also prevent the OEM Unlocking from showing up. Check your cables and try using different USB ports to ensure a stable connection.

Part 2: How To Enable Missing OEM Unlock Without a Password?

Unlocking your phone’s bootloader (OEM Unlock) varies across models and brands. Some need a passcode or PIN after rebooting the phone, while others don’t. Even if your phone doesn’t require a separate password, your existing screen lock (password, PIN, pattern) will usually be needed to enable the missing OEM unlock option.

But what if you forgot that, too? Wondershare Dr.Fone - Screen Unlock can help bypass forgotten passwords and unlock your phone even if you don’t have the technical knowledge. Here’s a quick breakdown of its key features in this area:

• Success Rate

High success rate for bypassing various lock screen types, including PIN code, pattern lock, passwords, and fingerprints.

• Ease of Use

Provides a concise and intuitive interface that guides users with clear instructions and on-screen prompts.

• Comprehensive Features

Dr.Fone - Screen Unlock tool can remove the Android phone lock screen without resetting your Samsung or LG device. It can also help you bypass Google Factory Reset Protection (FRP) on mainstream Android brands.

• Extensive Device Compatibility

Aside from Samsung and LG, it covers a wide range of popular Android brands like Vivo, Huawei, Xiaomi, Oppo, etc.

Regain control in minutes with Dr.Fone. First, download the app to your desktop and install it. Once it’s up and running, launch Dr.Fone and prepare to unlock your device with ease. You’ll find detailed instructions below – even if you don’t know your phone’s lock screen, Dr.Fone has you covered.

• Step 1: Select Screen Unlock from the Toolbox homepage. Then, establish a connection between your locked Android device and your computer using a USB cable.

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• Step 2: Specify the Meizu 21 Pro device type for screen lock removal.

• Step 3: Select Unlock Android Screen to proceed.

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• Step 4: Choose the brand of your phone from the supported brands.

Note:

The following steps will vary based on your device’s manufacturer. Please refer to the instructions on your screen to proceed into Download or Recovery mode.

• Step 5: The screen unlock process is underway. If it encounters trouble, click Try Again. Once Dr.Fone successfully unlocks your Android device, tap Done.

Now that you’ve regained access to your device thanks to Dr.Fone - Screen Unlock, you can move forward with enabling the OEM unlock missing option. Next up, we’ll guide you through the steps in several ways. Let’s start with the Developer options.

Part 3: How To Enable OEM Unlock Missing From the Developer Options?

Developer Options, a hidden menu in Android, offers advanced features like app debugging and custom ROM installation. But if the Android OEM unlock option is missing, you can’t unlock your device’s bootloader. Below is a step-by-step guide for you so the OEM unlock missing option will show in the Developer Options. Remember, this process may erase your device data, so a complete backup is essential before proceeding.

• Step 1: Open the Settings app on your Android phone.
• Step 2: Navigate to About Phone at the bottom of the list, then tap Software information.

• Step 3: Tap on the Build number repeatedly (7 times) until you see a message saying, “You are now a developer!“ or similar.
• Step 4: Go back to Settings > System and find the Developer options menu.
• Step 5: Scroll down and tap the toggle switch next to Enable OEM Unlock to turn it on.

• Step 6: A warning message explaining the risks of turning on the OEM unlock will appear. Read it carefully and tap Enable if you want to proceed.

• Step 7: Enter your PIN or password to confirm the unlock when prompted
• Step 8: Your device will reboot, and OEM Unlocking will be enabled.

Part 4: How To Fix OEM Unlock Missing by Adjusting Date and Time?

Some manufacturers intentionally delay the availability of the OEM unlock after a software update for security reasons. Changing the date to a past date before the update rolled out can trick the system into displaying the option, as it thinks the update hasn’t happened yet. It is a temporary fix, and the option will likely disappear again later when the Meizu 21 Pro device automatically syncs the correct date.

If you intend to try this method, follow these steps to enable OEM unlock missing or greyed out after an Android update:

• Step 1: Open the Settings app.
• Step 2: Go to System or General management, depending on your Android version.
• Step 3: Tap on Date and Time.
• Step 4: Turn off Automatic date and time.

• Step 5: Tap on Set date and choose the desired older date from the calendar.
• Step 6: Tap on Set time and choose the desired time from the clock.
• Step 7: Tap on Done to save the changes.
• Step 8: Go back to the Developers options and turn off the Auto update system option.

• Step 9: Go to Settings > Software update, then turn off Auto download over Wi-Fi.

This method should enable the OEM unlock missing issue. Otherwise, proceed to the next section for another solution.

Part 5: How To Fix OEM Unlock Missing by Removing SIM Card?

Certain carriers restrict bootloader unlocking on their devices to ensure compatibility and prevent unauthorized modifications. For these phones, unlocking the SIM card becomes crucial before you can toggle the OEM unlock option. Here are the steps to fix the OEM Unlock missing or greyed out using SIM card removal:

• Step 1: Use the SIM ejector tool (often included with your phone) or a small pin to push the tray out.
• Step 2: Go to Settings > General Management > Reset, then select Factory data reset. Enter your PIN or password if needed.

• Step 3: Review the warning and tap Reset to confirm.
• Step 4: Once the reset is complete, your phone will restart. Connect to Wi-Fi when prompted.
• Step 5: Skip any prompts to log in to your Google or email account. Then, repeat the process to open the Developer Options in the previous sections.

Conclusion

Having the OEM Unlock missing or greyed out can leave Android users feeling locked out of customization possibilities. Fortunately, this article has outlined helpful solutions like enabling the Android OEM Unlock missing option via the Developer Options. You can also try other methods above, like adjusting date and time settings or even a sim card removal trick. For those facing forgotten lock screens, we’ve offered guidance on bypassing them using the Dr.Fone - Screen Unlock tool to access the necessary phone settings.

While these methods provide a solid foundation, it’s always wise to research steps specific to your phone model. And never forget – caution is key. If things get technical, don’t hesitate to seek help from online communities or professional repair services.

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Mastering Lock Screen Settings: How to Enable and Disable on Meizu 21 Pro

In the modern world, the use of smartphones has become such a common trend that everyone would feel abnormal if they don’t have a smartphone of their own. So big the demand is that all IT companies are trying their best to introduce as well as innovate several excellent brands of smartphones. To support the function of smartphones, by far there have been numerous operating systems existed. Among them, Android is one of the most popular as well as trustworthy OS.

Just like any other smartphone, all Android devices have their ways to protect the data stored inside a smartphone from being corrupted or leaked. One of the simplest and most easy-to-use ways is to make use of the lock screen.

The lock screen has proved to be a traditional yet efficient way to help you protect your Android phones. In this article, we will provide you with an informative piece of writing about everything you need to know when it comes to the Android lock screen, and ways to enable and disable it.

If you have spent time searching and looking for features of your Android devices, you will find the process of enabling a lock screen is a piece of cake.

· Step 1: On the main screen of your Android devices, tap on the gear icon - which is the icon representing the Settings menu. Once you have chosen it, you will see a drop-down menu on the screen. In the options provided, tap on the Security bar.

· Step 2: Under the tab whose heading is entitled Screen Security, tap on the first bar in the list called Screen lock.

· Step 3: Once the step is done successfully, Android will give you plenty of choices about ways to lock your Android devices’ screens. Among these ways, select one particular type which you feel is most convenient as well as free-risk. After that, type in your PIN code to confirm the choice and finally activate your lock screen feature as you wish.

Part 2: How to Disable Android Lock Screen

To certain customers, the lock screen can do more harm than good, and they would prefer to disable the screen lock on their Android devices. This process is also an easy one to follow, as long as you still hold good memory of the security code.

· Step 1: On the main screen of your Android devices, tap on the gear icon. It will directly lead you to the Settings menu of the phone. After that, a drop-down menu will appear with several choices and bars. Among them, tap on the Security option to begin your work.

· Step 2: Under the heading called Screen Security heading, you will be shown 3 choices. Tap on the first one, which is entitled Screen lock.

· Step 3: Once you have done the previous step, a brand new screen will appear and then you will be asked to fill in your PIN code. This is a step that helps guarantee that you are the true owner of the Android device.

Step 4: As soon as you have confirmed the right PIN code in the bar provided, you will then be presented to the next drop-down menu. A similar screen will appear which shows you plenty of choices. Tap on the top of that list, which is a bar called None.

Step 5: In the end, you have successfully disabled the screen lock on your Android devices. You are now capable of using it without any hesitation about the screen lock.

Part 3: Common Problems of Disabling Lock Screen

The process to disable the screen lock on Android may seem easy to handle as well as straightforward to several customers, but there are still some annoying problems that users have to deal with while trying to disable the lock screen.

What are the top 2 common problems?

Below are the two most common problems faced by Android users during their efforts to disable the feature of screen lock.

1. In the Screen Security choice, the None bar can not be chosen.

Description of the problem: There is a sentence below it stated: “Disabled by administrators, encryption policy or credential storage”. All the space of the None option is in white and grey.

The solution to this problem is quite simple. Once you have made sure you are suffering from this nasty one, try to follow these below pieces of advice to see if it is capable of giving you a hand.

Step 1: Open the Settings menu from the main screen. Then tap on the Credential Storage. You will see a drop-down menu like the screenshot below.

Step 2: Continue to tap on the Clear Credentials (Remove all certificates) option. Then next click on the OK button. Wait for some seconds until your Android device has finished the process.

Step 3: To make sure that the previous step has been performed successfully, try looking at the bottom of the drop-down menu. If the Clear Credentials (Remove all certificates) are grey out and can not be selected, then you have managed to do it.

Step 4: Now that the problem is solved, you can feel free to turn back to your Screen lock option in the beginning and disable the feature of locking screen Android as usual.

2. You have mistakenly encrypted your SD card. You want to disable the encryption, only to realize that it requires you to set a new screen lock code. But when you come to the Screen lock menu, all the options but Password have been greyed out.

This is pretty weird, but actually, it is one of the most common troubles that many users have complained about. But to your surprise, the solution is very simple and easy. All you have to do is to reset your password, but with a little change. Your password MUST include at least ONE NUMBER in it. Confirm your new password then you will be able to disable the lock screen Android as usual.

Bonus Tip: Remove Android Screen Lock If Forgotten Password/Pattern

As much as the lock screen can protect the personal information on the phone, it can also cause much trouble if you forget the lock screen password or enter the wrong password too many times. So here comes the need for phone unlocking software . One of the best is Dr.Fone - Screen Unlock (Android), which can help us bypass forgotten Android screen locks without any data loss（limited to Samsung and LG series phones）. Other Android brand phones will be wiped out all the data once starting to unlock with Dr.Fone

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Steps on How to Unlock Forgotten Password in Android Phones

Step 1: Launch Dr.Fone and click on Screen Unlock from the primary window.

Step 2: Connect your Android device to the computer via USB cable. The program will recognize the phone directly. Select the phone model or “I can’t find my device model from the list above” to continue.

Step 3: Follow the instruction on the program exactly to set the phone to Download Mode. First, you will need to Power off your Phone. Secondly, Press on Volume Down, Home button, and Power button simultaneously. Thirdly press the Volume up button to navigate until the phone enters Download mode.

Step 4: After you set the phone to Download mode, it will begin to download the recovery package. When the recovery package is downloaded successfully, the lock screen on your Meizu 21 Pro devicewill be removed. You won’t lose any data during the whole process.

How To Remove Screen Lock PIN On Meizu 21 Pro Like A Pro: 5 Easy Ways

When protecting personal information on your phone, setting up a lock screen is essential. If you’ve ever forgotten your screen lock PIN on Android, you know how frustrating it can be to get back into your device. If you’ve ever tried to remove the screen lock PIN on an Android device, you know it’s not that easy.

It depends on your phone and the type of lock code you have set up. Note that this will erase all your data from the phone, so be sure to back it up first. This post will teach you how to remove the screen lock PIN on Android devices using several methods. So if you cannot use your device, keep reading for the steps!

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Part 1: How To Remove Screen Lock PIN On Meizu 21 Pro? 5 Simple Ways

If you’ve forgotten your screen lock pin, there’s no need to worry. Here are quick and easy ways to remove the screen lock PIN on your Android device.

1. Change or Remove in Settings

When you go to Settings > Lock Screen > Screen lock type, several lock screen options are available. These options are given below:

Swipe:

You can unlock your phone by swiping in any direction on its screen.

Pattern:

You will draw a pattern on a 3-by-3 grid of dots to unlock your phone this way. To do this, you’ll need to use your finger to connect the dots in the pattern.

Phone Pin:

When you choose a PIN, make sure it’s something easy to remember. But choose wisely- a PIN that’s too easy to guess can put your account at risk.

Password:

It is the highest level of security available for your phone. Passwords should contain seven characters, of which at least one must be a letter. They should also be both unique and memorable.

Face recognition:

By holding your face directly in front of the phone screen, you can unlock your phone and verify yourself in apps.

Fingerprints:

Touch your phone to open it quickly and easily.

Iris:

Verify that only the contents of your phone are visible to your eyes.

Intelligent Scan:

Unlock your device with both facial and iris recognition.

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If you’ve forgotten your lock PIN on your Android device, don’t worry - there are a few ways to reset it. Here’s how:

Step 1: Select Lock Screen > Screen lock type from the Settings menu.

Step 2: When prompted, enter your current lock screen code.

Step 3: Select None from the list.

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2. Disable Android Device Manager

It is not possible to remove the PIN from some Android devices. The Android device administrator can be disabled in this situation. Here’s how to universal unlock a PIN for Android:

Step 1: From the “Settings” option, select the “Security” option and click on it to begin.

Step 2: Select “Device Administrators” from the menu, and you will see a list of apps that may restrict your ability to change the settings.

Step 3: Choose the Android device manager from the list.

Step 4: Click on “Disable.”

3. Remove PIN from Google Find My Device

Even if you don’t remember your Android lock PIN, you can use Find My Device to eliminate your Android lock PIN. Sign in to Google Play, turn on Find My Device and Location, and connect your locked phone to the internet.

Here’s the guide to universal unlock PIN for Android:

Step 1: Log into your Google account on your computer and visit Google Find My Device.

Step 2: Tap the “ERASE DEVICE” icon on your device and enter your account information again.

Step 3: To remove Android phone settings and data, click the “Erase” icon. Once that is done, you will erase the phone PIN.

4. Factory Reset Your Meizu 21 Pro (Data Loss)

A factory reset in Recovery mode can also be used to remove the forgotten phone PIN lock on an Android device. It is important to note that you will lose everything on your device if you universal unlock your PIN for android.

Steps to get rid of forgotten phone PIN via factory reset:

Step 1: Turn off your Android phone by pressing and holding the Power button.

Step 2: To enter Recovery mode, press and hold the Volume Down + Power buttons simultaneously. Hold the buttons until the Start menu appears.

Step 3: After selecting Recovery mode with the Volume Down button, press the Power button to confirm.

Step 4: Select Wipe data/factory reset using the Volume buttons. Press Yes to confirm the operation.

Step 5: Once your device has been factory reset, you need to restart it by selecting the Reboot system now option.

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Part 2: Is There Any Universal Unlock PIN For Android?

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While there is no “universal unlock pin” for Android devices, Dr.Fone - Screen Unlock can bypass the lock screen on many popular phone models, including Samsung, LG, Motorola, Sony, HTC, Huawei, and more. Its simple interface makes it easy to use, even for those who are not tech-savvy.

Step 1: Select “Screen Unlock” from all the tools in Dr.Fone.

Step 2. Select Unlock Android Screen

We provide 2 options for you, and to unlock screen, you should select “Unlock Android Screen”.

Step 3. Select device model

There are still 2 buttons to choose, “100% Remove Screen Lock” is for most Android brands, but please back your device up before you pick it.

Check the brands’ list and make sure your unlock process keeps.

Step 4. Enter into Recovery Mode

With examples of Samsung phones, it’ll be clearer to understand how to unlock your Android phone via Recovery Mode.

Note: The specific processes are various according to different brands.

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Now it’s a phone everyone can access without a password or pattern.

Part 3: In What Cases Should We Remove PIN On Our Android Phone?

There are a few reasons why you might want to remove the phone PIN from your Android:

1. Failed Attempts

If you’ve tried to unlock your phone with a pin too many times and failed, your phone will become locked. In this case, you’ll need to remove the PIN to unlock it.

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2. Buy a Used Android phone

When you buy a second-hand Android phone, it’s best to remove the previous owner’s pin for security reasons. You can enter the phone’s settings and remove the PIN under the security section.

The Bottom Line

It can be frustrating when you forget your screen lock pin. You’re stuck staring at your phone, unable to use it or access any of your important data. But don’t worry; there are a few ways you can try to remove the screen lock pin on your Android device.

Luckily, Wondershare Dr.Fone - Screen Unlock is a powerful and easy-to-use lock screen removal tool that can help you bypass your lock screen in just a few minutes. Plus, it’s compatible with a wide range of Android devices, so you can use it regardless of what type of phone you have.