How To Enable USB Debugging on a Locked Meizu 21 Phone

Unlocking your Android’s potential goes beyond its surface features. Understanding USB debugging is key to troubleshooting and maximizing your device’s capabilities. In simple terms, USB debugging allows deeper access to your phone’s functionalities, aiding in software development and data recovery.

However, enabling USB debugging becomes crucial yet challenging when your phone is locked. This article delves into this necessity, explaining how to enable USB debugging on locked phones, especially for Android users. Unravel the mystery behind this essential feature, empowering yourself to navigate through locked phone scenarios effortlessly.

Part I. Challenges in Enabling USB Debugging on a Locked Android Phone

USB debugging is a nifty tool that lets you peek behind the scenes of your Android phone’s software. It’s like having a secret key that unlocks deeper access to your device, enabling tasks like software tweaking, app testing, and even data recovery.

Challenges in Enabling USB Debugging on a Locked Phone

Outlined below are some of the barriers, scenarios, and limitations, shedding light on the challenges that make USB debugging seemingly impossible.

**Locked-out access.**When your phone is locked, gaining access to the settings becomes a roadblock to enabling USB debugging.
**Limited functionality.**The phone’s locked state restricts the usual methods of accessing developer settings and USB debugging options.
**Security measures.**For security reasons, most devices limit access to sensitive settings when the phone is locked, making it tricky to enable USB debugging.

Scenarios Requiring USB Debugging on a Locked Phone

Unlocking your phone’s potential becomes crucial in moments of crisis. Explore below some of the scenarios where enabling USB debugging on a locked Android device becomes your beacon of hope:

**Data recovery.**Imagine accidentally locking yourself out of your phone with important data inside. Enabling USB debugging could be your ticket to retrieve that precious information.
**Software troubleshooting.**Sometimes, a locked phone might need software fixes or troubleshooting that requires USB debugging to access certain tools.
**Device testing.**For developers or tech-savvy users, testing new apps or debugging software issues often demands enabling USB debugging, even when the phone is locked.

Part II. How To Enable USB Debugging on Locked Phones

This section outlines the traditional method of enabling USB debugging on an Android phone. Stay tuned and check out the steps below:

Step 1: Unlock your device**.** If needed, enter your phone’s passcode or pattern to gain access to the Settings.
Step 2: Go to Settings, scroll down to About Phone, and tap on Build number seven or eight times to unlock the Developer Options.

Step 3: Once unlocked, return to Settings, find Developer Options (usually at the bottom), and enter the menu. Enable USB Debugging by tapping OK once the Allow USB Debugging? message appears.

However, what if your phone remains locked, making these steps impossible? Such a case calls for an alternative solution. Fortunately, there is one tool that is fully reliable when it comes to unlocking locked mobile devices. Dr.Fone - Screen Unlock (Android) can help bypass these challenges and enable USB debugging on a locked Android phone effortlessly. So, buckle up as the next section unravels the secrets to unlock your device’s potential!

Part III. Seamlessly Unlock Your Android With a Professional Resolution

Enabling USB debugging on a locked phone can feel like navigating a maze with no clear exit. Sometimes, despite your best efforts, the traditional method fails to grant access. Fret not! There’s a smoother path that unlocks your phone and eases the USB debugging hurdle.

Why Unlocking First Makes Sense

Attempting to enable USB debugging on locked phones can hit roadblocks. That’s why unlocking your device first becomes a game-changer. Dr.Fone – Screen Unlock (Android) is the hero of this story, simplifying the process and ensuring a hassle-free experience.

Key Features and Benefits

Check out the amazing key features and benefits of Dr.Fone – Screen Unlock that fits Android devices:

**Data safety and reliability.**Your data’s security remains paramount. With Dr.Fone – Screen Unlock, your device’s integrity and precious data stay safeguarded throughout the unlocking process.
Dr.Fone - Screen Unlock is compatible with a wide range of Android devices, irrespective of brand or model, ensuring accessibility for various users.
It’s not just about unlocking a locked screen; Dr.Fone offers multiple unlock modes tailored to different scenarios, whether a forgotten password, PIN, pattern, or fingerprint issue.
**High success rate.**With a high success rate in unlocking locked screens, Dr.Fone - Screen Unlock provides a reliable solution, even for complex lock scenarios.
**No data loss.**Users can rejoice in the fact that the unlocking process doesn’t compromise data integrity. Your photos, messages, and apps remain untouched and secure.
**Ease of use.**The software is designed for simplicity, making the unlocking process accessible to users with varying levels of technical expertise.

Tips: Forget your device password and can’t get access to it? No worries as Dr.Fone is here to help you. Download it and start a seamless unlock experience!

Guide To Unlock Your Meizu 21 With Dr.Fone – Screen Unlock (Android)

Below are the steps on how you can unlock your Android device using Dr.Fone:

Step 1: Get the most recent version of Wondershare Dr.Fone and connect your Android device to your computer via a USB cord. After connecting, access the unlock screen tool by going to the Toolbox and then selecting Screen Unlock.
Step 2: Once prompted, choose Android to unlock your Android screen lock. On the following screen, you’ll see two options; choose Unlock Android Screen.

Step 3: After that, you’ll be taken to a new screen where you can choose the brand of your mobile device.

Step 4: Once done, click the Remove without Data Loss button from the two options presented on the screen.

Step 5: Unlocking the Android screen requires choosing the Brand, Device Name, and Device Model next. Enable the option that says I agree with the warning, and I am ready to proceed by clicking the corresponding checkbox. To proceed with unlocking the screen, click Next.

Step 6: Type 000000 when asked to confirm the process. After entering the code, click Confirm to run the program.

Step 7: Once you’ve recognized your Android device’s model, Dr. Fone will walk you through entering Download Mode. Following the on-screen prompts will take you directly to the next screen. It then depicts the progress of the screen unlocking procedure, in which the platform’s required drivers and configuration files are downloaded.

Step 8: A new screen will appear, indicating the process has been completed. Click Done if your device’s screen unlock issue has been successfully fixed. If not, click the Try Again button.

Dr.Fone – Screen Unlock (Android) acts as your trusty guide, leading you through the maze of locked screens and inaccessible settings. It unlocks your phone first and enables USB debugging without the frustrating barriers.

Learn More About Android Unlock:

Samsung Unlock Codes to Unlock Samsung Phones [2024 Updated]

Unlocking Your Realme Phone Made Easy: No Data Loss!

The Best Android Unlock Software of 2024

Conclusion

In face of locked screens, USB debugging is a beacon of access and troubleshooting for your Android device. Remember, enabling USB debugging on a locked phone is crucial, opening doors to unforeseen solutions. However, what if you want to enable USB debugging on locked phones, but the process gets messy?

Then, it’s time to consider Dr.Fone - Screen Unlock (Android). It effortlessly paves the way to enable USB debugging on locked phones. By ensuring your device’s security and accessibility, even in locked states, Dr.Fone empowers you to navigate through obstacles, safeguarding your data while unlocking endless possibilities.

Everything You Need to Know about Lock Screen Settings on your Meizu 21

Everybody of you is well familiar with Android lock screen and it can be undoubtedly said that lock screen does a great job for an Android user. It really works as the main gate of your Android device. It also works as a safeguard of your device from unauthorized access if you enable some sort of protection. By the way, activating the lock screen is optional as you can customize or deactivate it from android lock screen settings.

Here’s a charm that’s you can unlock your lock screen by many ways and you’ve to set the ways from android lock screen settings. Now you’ll come to know how to set different types of screen lock, customize Android lock screen, and even unlock your android phone without resetting it as all the ways of unlocking is related to the Meizu 21 device when it’s switched on.

Different Ways of Unlocking Your Meizu 21

First look at the procedures on how you can enable the lock screen functionality from android lock screen settings. To reach the lock screen settings android, you’ve to follow the path:

Options – Security – Screen Lock – Choose Screen Lock.

Now see how to unlock your lock screen in different ways.

1.Slide

This is the most common method of unlocking an android lock screen. On all most all the android device, you’ll notice a lock mostly on the right side (sometimes on top) of a round charm. You just have to direct towards the lock and then the lock screen will be unlocked in no time. This method doesn’t provide any security (it just protects your device from sudden access by tapping on screen or any of the button) to your device as no password or PIN is required to set the “Slide” unlock.

Keep your any finger on the middle of the round charm and by keeping your finger pressed, reach on the lock icon. The lock screen will be unlocked just after reaching your finger to the lock icon.

2.Face Unlock

This method of unlocking your lock screen needs your Android device to snap a photo of your with its camera. After you set the snapped photo as the unlocking recognition, you could unlock your device through showing your face on the screen.

Capture a picture of your face with your Android device’s camera and then set it for logging in into your device. From the lock screen, by just by holding your face, you can log in. It’s very interesting, but you should never rely on this method for strong security as this method of unlocking is prone to break easily as an intruder can unlock your device by putting a photo of you in front of your device. Moreover, this method sometimes doesn’t work properly. So it’s better to go for some other highly secured options for locking your screen.

3.Pattern

This is a way of setting pattern for lock screen from a grid of nine dots. You can select the pattern like some letter like Z, L or C etc, but nothing guarantees high security as the set pattern can be easily guessed or be seen while you are unlocking your device. Another problem is that by unlocking with the same pattern, your finger leaves some marks for the pattern’s path. By following the path, a stranger can unlock your device. So for little security, you can use pattern unlock method on your Android device.

Go to the lock screen setting for Pattern and then set the pattern by sliding your finger from one dot to another, then another and like that way. Remember which pattern you’ve set in order to unlock your device in the next time.

4.PIN

You might be troubled by thinking about the difference between PIN and Password. A little distinction is there for a PIN and that is it consists of numbers only whereas for password, you can associate some alphabetical letters or signs along with numbers.

Go to the lock screen setting for PIN and then set a PIN that consists of minimum 4 digits. It’s your choice to use 4 or more digit PIN. After setting the PIN, you can access your Android device by putting the PIN in a box from the lock screen. PIN protected lock screen is highly protected if the PIN is set strongly.

5.Password

In addition to PIN protection, you can consider it as password by adding some letters, special characters with the previously selected PIN codes. It’s also very much highly protected method of locking screen though you might be bored with tapping for the password again and again. But never ignore the value of your device’s files, so a password can be a well-sought lock screen protection for many users.

6.Fingerprint

In some of the modern Android device, you’ll find the feature of fingerprint unlocking. You can find the option through the screen or any dedicated button. By setting your fingerprint, you can unlock your device by tapping your finger on the Meizu 21 device’s screen or the dedicated button.

7.Voice

This is also a fun way of unlocking Android lock screen as you can unlock by saying the same voice that you’ve saved as the unlocking recognition.

Go to the setting from “Voice Unlock” button and record your voice such as “Open My Meizu 21” or as per your choice with clear sound. Repeat the voice a few more times as to match well. Then set and unlock your device from the lock screen by using the same voice command.

Customize Android Lock Screen

Lock Screen Widgets

Widgets can be used from Android lock screen without unlocking the Meizu 21 device first. Also, because of this, any one who can access your phone can see your information from widgets. But since Lollipop update, widgets has been changed to Notifications on Android. Here, let’s see how to set customize widgets on Android running OS before lollipop. You can also find some useful alternatives to lock screen widgets here.

For devices running Android 4.2 or 4.3, lock screen widgets are enabled by default. So you can use them directly. For users of KitKat, you can go to Settings, select Security, and find Enable Widgets option. To add a new widget to the lock screen, swipe the screen from left to right until there is a plus on the screen. Tap the plus and select the widget you would like to add. You can also drag the widgets to repalce it.

Smart Lock on Android

Smart Lock is a new feature introduced in Lollipop. It helps you keep your device unlocked when it’ safe with you, by recognizing locations, bluetooth system, or smartwatch etc. To know more about Smart lock settings , just follow the information here.

Customize Lock Screen Wallpaper

Except all the different types lock method to protect your phone, there are also many wallpapers to make your lock screen lool beautiful or cool. Click here to check out how to change lock screen wallpapers and download more beatiful wallpapers from different sites.

Bypass your Samsung Phone’s Lock Screen using Dr.Fone - Screen Unlock (Android)

This is an easy way to unlock your Samsung device if you forgot your Samsung’s lock screen pattern, PIN or password.It’s named Dr.Fone - Screen Unlock (Android) ,which is the best tool to solve your problems with simple steps.

Note: If your are using Samsung or Lg, then this tool can perfectly remove the locked screen while keeping all the data. As for thoes users who are using Andriod phone, this tool still can help you unlock the screen while you will lose all your data after unlocking.

Click here

### Dr.Fone - Android Lock Screen Removal

Remove 4 Types of Android Screen Lock without Data Loss

It can remove 4 screen lock types - pattern, PIN, password & fingerprints.
Only remove the lock screen, no data loss at all.
No tech knowledge asked, everybody can handle it.
Work for Samsung Galaxy S/Note/Tab series, and LG G2/G3/G4, etc .

3,587,277 people have downloaded it

Follow the steps on how to bypass your Samsung Phone’s lock screen by Dr.Fone - Screen Unlock (Android)

Step 1. Run Dr.Fone and choose “Screen Unlock”.

Step 2. Connect your Samsung with USB on computer,then you will see the windows as follow,and select phone model in the list.

Click here

![bypass Samsung Phone's lock screen](https://images.wondershare.com/drfone/guide/screen-unlock-any-android-device-2.png)

Step 3. Enter the download mode on your Samsung device. Follow the guide of the windows.

1.Power off the phone.
2.Press and hold volume down + home button + power button at the same time.
3.Press the volume up to enter download mode.

Step 4. Download the recovery package after your device model matched successfully.

Step 5. When the recovery package is downloaded completed,you can start the process of unlock,the whole process won’t lose any data on your device.You can access your device without entering any password or PIN after the process is finished.

Video on How To Remove Android Lock Screen

How To Fix OEM Unlock Missing on Meizu 21?

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.

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

Step 3: Select Unlock Android Screen to proceed.

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 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.

Tips: Forget your device password and can’t get access to it? No worries as Dr.Fone is here to help you. Download it and start a seamless unlock experience!