How To Fix OEM Unlock Missing on Vivo Y02T?

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 Y02T 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.

Click here

## 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 Y02T 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 Change Vivo Y02T Lock Screen Clock in Seconds

The initial glimpse of your phone often involves the lock screen. This essential feature is customizable based on your Android device. With the advent of Android 12, a double-line clock has stirred some controversy among users. It’s because the Android lock screen clock veered from the one-line design of the previous version.

The larger clock style appears when there’s no notification. It will only switch to the old one-line format when a notification pops up. Discover how to change the lock screen clock on your Android and tweak its appearance. Explore the article to learn more.

Part 1. How Do I Put a Clock on My Android Lock Screen?

Android devices running version 12 or later come with the clock feature activated by default. Take note that its appearance may change under specific circumstances. It can change when there are unread notifications visible on the lock screen.

For devices running Android 11, changing the lock screen clock is still available. In some instances, you can even customize its style by following these simple steps:

• Step 1: For users with Android 11 or older, go to Settings > Lock screen & security. Depending on your phone model, tap Lock screen or Security.

• Step 2: Go to Customize Lock screen > Clock. Next, customize or activate the lock screen clock.

Note

The exact names of settings may change depending on the manufacturer and version of Android. But the navigation should be similar.

Part 2. How To Change Lock Screen Clock on Android [5 Methods]

Currently, there isn’t an official method to change the lock screen clock on Android 12. However, there are several workarounds you can do. Let’s explore these techniques and see which works best for you.

Method 1: Change Your Wallpaper

In Android 11, adjusting your wallpaper is accessible through the Android Settings menu.

• Step 1A: Navigate to the “All Apps” screen and select Settings. For Samsung Galaxy devices on Android 11, access the Wallpaper option within the settings menu.

In Android 12, the process remains consistent.

• Step 1: Locate the Wallpaper & style button within the Settings menu**.**

• Step 2: Follow the provided instructions to transform your lock screen experience. Replace the oversized clock with dynamic, changing wallpapers.

Method 2: Turn Off the Always-On Display

An alternative to avoid the Android lock screen clock is disabling the Always-on Display (AOD).

• Step 1: Access the Settings menu on your Android device. Scroll down and choose Lock screen > Always On Display.

• Step 2: Toggle off to deactivate the Always On Display.

_Note_

While this won’t alter the lock screen clock itself, it will turn off the display. It will prevent the constant presence of the lock screen clock. Instead, the clock will only become visible when you press the power button.

Method 3: Disable the Double-Line Clock

Originally, there was no provision to change the lock screen clock in Android 12. With the release of a new update, Google introduced an option to deactivate the clock, bringing relief to users. Follow the steps below to disable the double-line clock on your Android.

• Step 1: Go to Settings > Display. Next, choose Lock screen.

• Step 2: Toggle the Double-line clock off.

_Note_

If you want to display a digital or analog clock, open the _Clock_ app. Tap the _three dots_ > _Settings_ > _Style_****.

Method 4: Turn On Screensaver

An alternative method to modify the Android lock screen clock involves activating Android’s screen saver. There are options where it’s more pleasing than the default lock screen clock. If you want to change the lock screen clock, follow the steps.

• Step 1: Open the Clock app and tap the three dots in the upper-right corner. Select Screensaver and toggle it on.

• Step 2: If you want to customize the screensaver clock’s appearance, go to Settings > Display > Screensaver. Choose analog, digital, or night mode.

Method 5: Keep Unread Notifications

To avoid adjusting your Android device settings, you can make the lock screen clock smaller by maintaining unread notifications. The clock occupies less space when there are unread notifications. It shifts back to the top-left corner when you receive a new notification. Simply leave notifications unread to keep the clock smaller.

Bonus

For users who prefer not to have a lock screen clock, follow these steps:

• Step 1: Open Settings > Lock screen or Security & lock screen.
• Step 2: Look for Clock and FaceWidgets or a similar option. Disable or toggle off the Clock or Show clock setting. Save changes, and your lock screen should no longer display the clock.

Part 3. An Exception: Change the Lock Screen Clock on Samsung Phones

Changing the lock screen clock on Samsung phones is similar to the general Android process. However, the steps are quite different, offering Samsung users a unique customization experience. If you wish to personalize your lock screen clock, here’s how:

• Step 1: Go to Settings > Lock screen or Lock screen & security. Choose Customize lock screen > Clock, Clock style, or Lock screen clock.

• Step 2: Choose between different styles, such as digital, analog, or others. Some Samsung models offer extra settings like color, size, and more to enhance your lock screen further. Select the one that suits your taste.

If you’d rather remove the lock screen clock on your Samsung device, follow these steps:

• Step 1: Go to Settings > Lock screen or Lock screen & security.Choose Customize lock screen > Clock, Clock style, or Lock screen clock.
• Step 2: Disable or toggle off this setting to remove the clock from your lock screen.

If you ever find yourself locked out of your Android device due to a mishap while changing your lock screen clock or any other reason, don’t fret. Wondershare Dr.Fone– Screen Unlock - Android can effortlessly bypass the lock screen and unlock your device without a hassle.

Read More About Android Lock Screen:

9 Ways to Bypass Samsung Lock Screen without Data Loss [2024]

How To Easily Unlock Nokia Screen: 4 Effective Methods

How to Change Lock Screen Wallpaper on Android

Part 4. How To Unlock Accidentally Locked Android Screen

Accidentally locking yourself out of your Android device can be a stressful experience. Dr.Fone provides a hassle-free solution to unlock your Android screen without losing any data. Whether you’ve locked yourself out or forgot your PIN, Dr.Fone ensures a straightforward and secure unlocking process. Here’s a step-by-step guide to using the tool:

Dr.Fone - Screen Unlock (Android)

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• Compatiable with various Android models.
• Provide specific removal solutions to promise good success rate.

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• Step 1: Download and install Dr.Fone on your computer. Launch the program after installation and go to Toolbox > Screen Unlock.

• Step 2: Choose Android in the next window and click on Unlock Android Screen.

• Step 3: Choose your device brand and click Remove without Data Loss. Select the Brand, Device Name, and Device Model of your smartphone. Once done, toggle the checkmark on I agree with the warning, and I am ready to proceed button.

• Step 4: Follow the on-screen instructions. Once they’re done, Dr.Fone will automatically proceed with the unlocking process. There will be a new screen showing the completion if done correctly. If it fails, click on Try again. Otherwise, click Done to finish.

What Else Can Dr.Fone Do for Android Owners?

Dr.Fone Screen Unlock for Android is a comprehensive tool that goes beyond unlocking screens. It also provides a range of features to address various Android device-related issues, such as:

Bypass Factory Reset Protection (FRP)

You can bypass Factory Reset Protection on your Android device with Dr. Fone. It allows you to set it up without the original Google account credentials.

Unlock Samsung/LG without data loss

Whether you own a Samsung or LG device, Dr.Fone allows you to unlock your phone without compromising any data stored on the Vivo Y02T device.

Supports 2000+ Android models

Dr.Fone is compatible with a vast array of Android models. It supports over 2000 devices, making it a versatile solution for Android users.

Conclusion

Knowing how to change the lock screen clocks on your Android offers a personalized touch. Android 12 users can effortlessly adjust settings, while Android 11 and older versions require a manual setup. Samsung owners, meanwhile, enjoy a similar but unique customization process. Follow the steps outlined above for those seeking to remove the lock screen entirely.

On the other hand, if you accidentally lock yourself out of your smartphone, Dr.Fone is a go-to solution, ensuring a smooth unlocking process. Whether tweaking your Android lock screen clock or facing accidental lockouts, explore these methods to tailor your Android experience.

How to Unlock Vivo Y02T Bootloader Easily

Do you want to unleash the true power of your smart phone? Do you wish to have complete control over your smart phone? If yes, well, here is the answer; unlock bootloader. For people who are already into the tricks of hacking and rooting smart phones, might be aware of this. But still, there are exciting new developments. Bootloader is a code existing in all operating systems which usually comes pre-locked. So, it is important, if you wish to have a custom ROM installed on the Vivo Y02T device, or if you wish to have other controls like installing applications which are incompatible, to have the Vivo Y02T device bootloader unlocked. But going through with the process of unlocking bootloader and rooting the Vivo Y02T device will not help and rather might break the warranty of the Vivo Y02T device. This definitely calls for a diligent watch on how to unlock HTC bootloader. So, it is imperative as a user to know the process of HTC bootloader unlock. This article serves you with some ways you could follow to unleash the true power of your HTC device. Here’s how you can do it.

Part 1: Why We Want to Unlock HTC Bootloader

For people with HTC device, unlocking bootloader would mean complete authority over the smart phone and you have all the power to control the HTC device by all means. Since, bootloader usually comes pre-locked, unlocking the bootloader is the initial step if you would like to have a custom ROM installed in your device. There are various advantages of HTC unlock starting from gaining rights of control to installing latest custom ROMs in the phone and installing incompatible applications. Moreover, HTC unlock bootloader could boost the Vivo Y02T device speed and battery life and also help in making complete backups of the Vivo Y02T device. You could also have controls to remove bloatware from the HTC device. So, all in all, while there could be certain side effects, if not done properly, there are various advantages of unlocking HTC bootloader. If the process is carried out properly, the Android device could be the perfect smart phone you would like to have.

Part 2: How to Unlock Vivo Y02T Bootloader

Vivo Y02T is the flagship device of HTC by all means. With a world of features and offerings, Vivo Y02T truly is a beast. While the phone is very powerful without any modifications, the true potential is yet to be seen and that can only be done if the bootloader is unlocked. So, to have a complete control over the Vivo Y02T device, it is important to unlock the bootloader and the process has to be carried out diligently. One of the initial things that needs to be ensured is that the Vivo Y02T device is fully charged or atleast 80% mark. Make sure you have the fastboot drivers for the Vivo Y02T device configured on the windows machine and the Android SDK. Here are some of the steps which can be followed to unlock bootloader.

Step 1: It is always very important to keep the phone data backed up and more so when you are planning to unlock the bootloader.

As one of the initial measures, backup the Vivo Y02T device completely as bootloader unlocking process will wipe all the data off. So, backup all the data like photos, contacts, multimedia files, documents, etc.

Step 2: Go to htcdev.com/bootloader. Ensure that you are registered with HTC and once the sign up is done, log in to HTC dev.

Now, ensure that HTC Sync Manager is installed on the PC.

Step 3: From the bootloader page, select your device using the drop down option as shown in the picture below.

After selecting the Vivo Y02T device, click on “Begin Unlock Bootloader”, and then confirm all the dialogue boxes which come your way on screen.

Step 4: Now, you will be presented with four steps to put the Vivo Y02T device in bootloader mode. Disconnect the Vivo Y02T device from the PC and turn the Vivo Y02T device off completely. Press the volume down button along with the power button to switch the Vivo Y02T device on in bootloader mode.

Step 5: Use the volume keys of the Vivo Y02T device to select Fastboot option along with pressing power button to confirm, after the Vivo Y02T device is in bootloader mode. Now, connect the Vivo Y02T device to the computer using a USB cable.

Step 6: Go to Fastboot folder on the PC and holding down the shift key, click on any empty space followed by a click on “Open command window here”.

Step 7: In the command prompt window, type “fastboot devices” and press enter. Vivo Y02T will show up in the command prompt.

Note: The drivers have to be installed correctly to see the Vivo Y02T device in the command prompt. So, if the Vivo Y02T device does not show up, reinstall HTC Sync Manager and try again after restarting the computer.

Step 8: On HTC Dev’s website third page, click on “proceed to Step 9”. Follow the steps listed and then click on submit. The unlock token code for the Vivo Y02T device will be mailed by HTC. Download the token and name it “Unlock_code.bin” and place the token in the fastboot folder.

Step 9: Now, in the command prompt window, type the following:

fastboot flash unlocktoken Unlock_code.bin

Step 10: On the Vivo Y02T , one message will appear asking if you want to unlock the Vivo Y02T device bootloader.

Use volume keys to select and power button to confirm. Once this is done, the Vivo Y02T device will restart once and it’s done. The device is now bootloader unlocked.