How To Fix OEM Unlock Missing on Vivo X100 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.

Step 2: Specify the Vivo X100 Pro 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 Vivo X100 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.

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!

How To Easily Unlock Vivo Screen?

If you’ve ever had a Vivo phone, then you know that their screens are locked by default. It can be a pain if you want to access your messages or change your background image quickly. If you just set your Vivo password, screen lock code, pattern lock, or PIN last night or a few days ago, you are most likely to forget it.

The result is that you have locked out of your phone, and you have to reset your device’s password. But fortunately, there’s an easy way to unlock your Vivo screen without entering any passwords. You can have your phone up and running in a few simple steps without contacting customer service.

So don’t wait any longer - read on for instructions on how to unlock the Vivo phone pin code.

Let’s get started!

4 Easy Ways To Unlock Vivo Screen

Like most people, you probably lock your Vivo phone as soon as you turn it on. It’s a good way to keep your phone safe from prying eyes and accidental button presses. But what happens when you forget your phone’s passcode? Or worse, what if your phone gets locked by a malicious app?

There are a few different ways to unlock your Vivo phone. We’ll show you how to do it.

Method 1. Google Find My Device (Without Password/Pin/Pattern)

If you’re like me, you’ve probably tried a million different ways to unlock your Vivo phone, only to be frustrated by the results. Luckily, there’s an easy way to unlock your Vivo phone using Google’s Find My Device feature.

Google will use your location, phone information, and connection log to find your Nokia.

Follow these steps to unlock the Vivo lock screen password without losing data:

Step 1: Sign into your Google account and navigate the Find My Device website.

Step 2: Sign in with your Google account, which you used on your locked Vivo phone.
Step 3: The Android Device Manager dashboard will show your locked Vivo with three options: Ring, Lock, and Erase.
Step 4: Simply click on “Lock”.
Step 5: Enter a password that is not your Google account password in the “New Password” field.
Step 6: Type the new password in the “Confirm password” field. This password lock will replace the current lock screen.
Step 7: You can leave the “Recovery message” field empty or type anything in it.
Step 8: Enter another phone number in the “Phone number” field, although this is optional.
Step 9: Choose “Lock” after entering your password and filling out the optional fields if you wish.
Step 10: If the process is successful, you will receive the unlock code within a few seconds.
Step 11: Navigate to the “Screen Settings” menu after unlocking your device.
Step 12: Use a new password; you can use the temporary password if you want.

You can use it to unlock your Vivo if you have activated the Android Device Manager or Google Find My Device before your phone was locked.

A few conditions, however, must be met for this to work

You must turn on your Vivo phone.
Before locking your phone, you must activate Google Find My Device or Android Device Manager.
You must have your Vivo GPS turned on to use it.
You must be connected to WiFi on your device to log into your Google account.
Your phone needs to be set to location.

Method 2. Unlock Vivo Lock Screen With Hard Reset

If you perform a hard reset on your Vivo lock screen, all data, and user information will be erased, including your screen lock, password, pattern lock, and PIN.

Follow the steps below if you want to know how to unlock the Vivo phone keypad with the hard reset, follow the steps below.

Step 1: Turn off your Vivo phone.
Step 2: Press the “Volume down” and “Power key” buttons simultaneously for a few seconds.
Step 3: Press the “Volume Up” and “Power” buttons for a few additional seconds once the screen darkens.
Step 4: Release all buttons and keys if you did step 3 correctly. Once you release all buttons, you’ll see a dark screen with options.
Step 5: Choose “Wipe data/factory reset” from the menu, using “Volume Up” to scroll up, “Volume Down” to scroll down, and “Power” to select.
Step 6: From the Android Recovery screen, select the “Yes” option by pressing the “Volume Down” button and the “Power” key.
Step 7: With the “Power” key, select “Reboot system now” from the next display.

Your Vivo is now password, pattern lock, screen lock, and PIN-free after a hard reset.

Method 3. Unlock With Answer Security Questions

You can reset the Vivo pattern lock using Google security questions without losing data.

Follow the steps below on how to unlock the Vivo phone pin code:

Step 1: Power on your Nokia.
Step 2: Press “Forgot pattern” several times until you see “Forgot password”.
Step 3: Click on “Forgot pattern” to access the unlock screen.
Step 4: Enter your Google account details or answer questions to unlock the screen. Select “Answer question”.
Step 5: Enter your exact security answers and tap the “Unlock” button.
Step 6: Choose “YES” from the “YES” or “NO” menu, and the password field will appear.
Step 7: Change your password or PIN.
Step 8: You will see your Vivo unlocked soon.

Method 4. Unlock the Keypad With a Security Code

You could reset your Vivo lock screen phone using the default security code, even if you haven’t set any security code. Here’s how to quickly unlock the Vivo lock screen security code.

Step 1: Shut down your device.
Step 2: Press these buttons in the following sequence on a classic phone.

Call button (green button) + Asterisk key (*) + Three (3)

Step 3: Your screen displays a Formatting message when you press these keys.
Step 4: Wait for the formatting to complete before releasing the keys.

o 12345.

Conclusion

If you have a classic-style keypad phone or an Android device, unlocking a locked Vivo phone keypad is not easy. However, we believe that every problem has a solution. You can unlock Vivo Android phones using any of the methods listed above.

Tips: Wondershare Dr.Fone is a tool that helps you keep your important data safe. It can back up all the important information on your Vivo phone, like photos, music, videos, contacts, and more and is compatible with over 8000 Android devices. The backup process is easy and only takes a few clicks. You can also restore your backup to any device you want, and choose which data you want to restore. This is a great way to make sure you never lose your important Vivo data!

How To Enable USB Debugging on a Locked Vivo X100 Pro 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 Vivo X100 Pro 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.