How to Bypass Android Lock Screen Using Emergency Call On Vivo Y78t?

The main reason why we keep our smartphone locked is to prevent children (or stalkers) checking out our private photos or messages. You don’t want anyone to access your pictures, emails, or other important data. What if you forget your pattern or PIN and cannot access your phone? Or someone changes lock screen pattern to leave you annoyed?

To avoid such types of conditions, we have tried and tested the following methods to bypass the Vivo lock screen pattern, PIN, password, and fingerprint.

Method 1. Use ‘Find My Mobile’ feature on Vivo Phone

All Vivo devices come with the “Find My Mobile” feature. To bypass the Vivo lock screen pattern, PIN, password, and fingerprint, you can just follow the below steps to get it done.

Step 1. First, set up your Vivo account and log in.
Step 2. Click the “Lock My Screen” button.
Step 3. Enter a new PIN in the first field
Step 4. Click the “Lock” button at the bottom
Step 5. Within a few minutes, it will change the lock screen password to the PIN so that you can unlock your device.

Method 2. Use Android Device Manager to Bypass Vivo Password

To know how to unlock a Vivo phone lock password with Android device manager, make sure the Android Device Manager is enabled on your device.

Step 1. Visit google.com/android/devicemanager on other smartphones or PC.
Step 2. Log into your Google account that you used on your locked device.
Step 3. Choose the Vivo Y78t device you want to unlock in ADM interface
Step 4. Click on the “Lock” option.
Step 5. Enter a password. There is no need to enter any recovery message. Select “Lock” again.
Step 6. You would see a confirmation below if it is successful, with “Ring, Lock and Erase” buttons.
Step 7. Now you must get the password field on your phone where you can enter your new password, and your phone will be unlocked.
Step 8. Go to lock screen settings on your device and disable the temporary password.

If your device is still running on Android 4.4 or lower, here’s how to bypass the Vivo lock screen fast.

Step 1. Enter the wrong pattern for five times
Step 2. Choose “Forgot Pattern”
Step 3. Enter your Google account login or backup PIN
Step 4. Now your phone would be unlocked.

Method 4. ‘Pattern Password Disable’ and Custom Recovery (SD Card needed)

To bypass the Vivo lock screen in this method, you ought to be an advanced user who knows what are “custom recovery” and “rooting”. You have to install any kind of customer recovery, and you should have an SD card on your phone. SD card is required to move a ZIP file to the phone, and it is the only way to transfer the file when the Vivo Y78t device is locked.

Step 1. Download a zip file named “Pattern Password Disable” on your computer and move it to the SD card of your Vivo device.
Step 2. Insert the card on your device
Step 3. Restart your device into recovery mode.
Step 4. Flash the file on your card and restart the phone.
Step 5. Now your phone would boot up without lock screen. Don’t worry if you had a gesture lock or password. All you need to do is to input a random gesture or password, and it will be unlocked.

Method 5. Delete the Password File Using ADB

It is yet another option that will work only when you have enabled USB Debugging previously on your device, and your PC is allowed to connect via ADB. If you meet such requirements, it is ideal to use this method to unlock the Vivo lock screen.

Step 1. Connect your device to the PC using USB cable and open command prompt in the adb directory. Type the command “adb shell rm /data/system/gesture.key” and then press “Enter”.
Step 2. Restart your phone, and a secure lock screen must be gone, and you can access your device. Be sure to set a new PIN, pattern, or password before rebooting again.

Method 6. Factory Reset to Bypass Vivo Lock Screen

A factory reset is the best option in almost any case if one of these solutions couldn’t work. According to your device type, the process may vary. In most devices, you have to turn off the Vivo Y78t device completely to start the process. But this method will delete all the precious data on the Vivo Y78t device after the factory reset.

Step 1. Hold the power button and volume down at the same time. It will open the Bootloader menu.
Step 2. Press the volume down button two times to choose “Recovery Mode” and select it by pressing the “Power” button.
Step 3. Hold down the power button and tap “Volume Up” once, and you would enter “recovery” mode.
Step 4. Choose “Wipe Data/Factory Reset” option by using volume buttons.
Step 5. Select it by pressing the Power button.
Step 6. Select “Reboot System Now” once the process is done.

Backup your Vivo phone regularly in case of any data loss in the future.

Method 7. Boot into Safe Mode

Chances may be that you are using a third-party lock screen app. Then lucky for you, this way works best to bypass the Vivo lock screen. Specifically, you can boot your Vivo device into Android Safe Mode .

Step 1. Open up the Power menu from the lock screen and press and hold the “Power Off” option.
Step 2. It will ask if you want to boot in safe mode. Tap “OK”
Step 3. Once the process finishes, it will temporarily disable the lock screen activated by the third-party app.
Step 4. Uninstall the third-party lock screen or just reset the data.
Step 5. Reboot your device and get out of safe mode.
Step 6. Now the irritating lock screen app is removed completely.

Method 8. Other Methods

Step 1. Take your friend’s phone to call on your locked phone.
Step 2. Accept the call and press the back button without disconnecting.
Step 3. Now you can access the Vivo Y78t device completely
Step 4. Go to the security settings of the Vivo Y78t device and remove the pattern or pin.
Step 5. It will ask you the correct pin that you don’t know, guess, and try various combinations you can recall.

To avoid forgetting your password or PIN next time, be sure to write the pattern or numbers on a text file or paper to keep them safe. If you have to bypass the Vivo lock screen pattern, PIN, password, and fingerprint, you may consider using Dr.Fone - Screen Unlock (Android). It is a professional tool that can remove all the fingerprints, pattern, and password lock screens without losing any data on your phone.

How To Fix OEM Unlock Missing on Vivo Y78t?

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 Y78t 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 Y78t 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 Unlock Vivo Y78t Phone Password Without Factory Reset?

You always set up some sort of lock to secure your smartphone to stop others from checking your phone data, messages, or pictures. More importantly, it is needed to deny admission to your valuable phone data in case it gets stolen. However, many times you come across this situation where your Android phones are stuck as you cannot unlock the password. Either your children have been playing with the lock patterns, and the screen gets locked due to entering the wrong password many times, or you have unexpectedly forgotten your password. Or somebody else has reset your password, or you have broken your mobile screen, and you cannot enter your password. Many similar situations may arise.

You are in the middle of some things, and you want to make some urgent calls. How to unlock Android phone passwords without a factory reset? What do you do then? There are very easy solutions to this that would help unlock your Android phone in no time without going for the factory reset and losing your valuable data.

Part 1: How to unlock Android password without factory reset using Dr.Fone - Screen Unlock?

Whether you have a pattern or PIN or fingerprint as a password, you can remove any type of password by using the Dr.Fone - Screen Unlock. The only defect is that your data will be wiped out after unlocking the phone successfully. It helps in removing the lock screen on Android phones. Now, if you are thinking about how safe it is, let me assure you that the process is very safe and simple, with no risk of data leakage. This process is supported by most Samsung and LG smartphones without data loss, and you just need to connect your handset to let the Dr.Fone - Screen Unlock start the procedure.

safe & secure

Dr.Fone - Screen Unlock (Android)

Get into Locked Android Phones without Factory Reset

4 screen lock types are available: pattern, PIN, password, fingerprints, face ID, etc.
Support 20,000+ mainstream models of Android phones & tablets.
Save you from ending up with a locked phone after too many wrong attempts.
Provide specific removal solutions to promise good success rate.

4,008,669 people have downloaded it

Follow the following steps to unlock your Android password without factory reset using Dr.Fone.

Step 1: Firstly, install and run Download Dr.Fone –Screen Unlock on your computer. And connect your Android phone to your computer with a USB cable > download.

Step 2: After that, select the phone model from the list or choose “I can’t find my device model from the list above” on the next screen.

Step 3: Now, there will be three steps mentioned that you must follow to get your phone into the Download mode. The first is to power off the phone. The second is to press and hold the Volume button along with the Home button and Power button. The third step is to press the volume up the option to get into the download mode.

Step 4: Once your phone is in download mode, the program will start downloading the recovery package and then unlock your Android password without factory reset or data loss.

Step 5: You will see that the icon showing “Remove Password Completed” will pop up. This whole process takes only a few minutes to get your work done without any loss of any data.

Part 2: How to unlock Android password without factory reset using Android Device Manager?

With very simple steps and a few minutes at hand, you can get rid of your password using Android Device Manager (ADM). This tool will unlock your password without going for a factory reset and losing data. The main feature of the Android device manager will run through the Google account. The installation of a Google account is very important to run out the Android device manager. The Android device will respond immediately once if the phone is switched on. The connectivity of the internet is a must to find the map on the Vivo Y78t device. How to unlock Android phone passwords without factory reset? May it be quite interesting to use device manager visuals? The steps are mentioned below:

Step 1. Your Android phone is always linked to your Google account. So first and foremost, on your computer or on another mobile phone, open the site <www.google.com/Android/devicemanager> .

• Now sign in with your Google credentials. Google will start searching for your device. Here you need to choose the Android phone you want to unlock in case it is already not selected.

Step 2. Here you will see three options: “Ring,” “Lock,” and “Erase.” Select the “Lock” option

Step 3. A window will appear where you need to type any temporary password. Do not enter your Google password, and you need not enter the recovery message. Click on “Lock ” again.

Once successful, you will get a confirmation message below the three buttons: Ring, Lock, and the Erase option.

Step 4. On your locked phone, you will see a field asking for your password. Here you can enter your temporary password. Doing so will unlock your device.

Step 5. Now in your unlocked phone, go to Settings and then to Security. Now click on disable to remove the temporary password, and later you change it with a new one.

You have successfully unlocked your device.

Part 3: Unlock Android password using custom recovery and Pattern Password Disable (SD card needed)?

The third way to unlock an Android phone password without a factory reset it using the “custom recovery” technique. To work out this process, you would have to install the custom recovery process. Also, your phone needs to have an SD card. It will be required to send the zip file to the phone since your device is locked. This technique requires access to the Android System folder and rooting your device if not already rooted.

Custom recovery is a usual mechanism in all smartphones. It predicts the troubleshooting techniques and how to process the main configuration with all sequences. Quite interesting, isn’t it?

Follow the following steps to complete and unlock the Android password without a factory reset.

Step 1. First of all, download a zip file by the name “Pattern Password Disable” to the computer system and then transfer it to your SD card.
Step 2. Then you would need to insert the SD card into your locked phone and then restart the Vivo Y78t device in recovery mode.
Step 3. Next, move on to flash on the zip files to the card and restart. After that, your phone will boot and open up without the locked screen.

Note: Sometimes, the Vivo Y78t device may ask for a pattern or password. You just need to put in any random pattern/password then it will get unlocked.

Through this easy method, you can now access your Android phone without using a factory reset and losing your valuable data.

The problem of getting your mobile locked and not being able to open it is a common problem on Android phones these days. Many of us tend to panic when such problems arise. However, now that we have given some easy solutions and methods to unlock Android phone passwords without factory reset and losing any data, things would be much easier. Thus, you will solve your problems in no time.

Android Unlock

How to Bypass Android Lock Screen Using Emergency Call On Vivo Y78t?