Forgot Pattern Lock? Heres How You Can Unlock Vivo Y77t Pattern Lock Screen

Forgot Pattern Lock? Heres How You Can Unlock Vivo Y77t Pattern Lock Screen

Peter Lv12

Forgot Pattern Lock? Here’s How You Can Unlock Vivo Y77t Pattern Lock Screen

Forgetting the pattern lock of a device and getting locked out of it is probably one of the most frustrating scenarios faced by Android users. Nevertheless, unlike popular operating systems, Android provides a seamless way to past the forgot pattern lock feature.

You can either try Google’s native solution or a third-party tool in case you have forgotten the pattern lock on your device and reset it. In no time, you will be able to access your device (or even someone else’s phone by following these techniques). To make things easier for you, we have provided three simple solutions to resolve forgotten patterns on Android devices.

Part 1: How to bypass forgot pattern lock using the ‘Forgot Pattern’ feature?

One of the easiest and fastest ways to fix the forgot pattern lock issue on a device is by using its inbuilt “Forgot Pattern” feature. If you are using an Android 4.4 or earlier version, then you can simply access this feature. Since users can hack an Android device just by knowing the Google credentials of the connected device, the solution was later discontinued (as it was considered a security vulnerability). Nevertheless, if your device hasn’t been updated and you are using an Android 4.4 or previous version, then you can bypass the forgot pattern lock by following these steps:

Step 1. Firstly, provide the wrong pattern to your device. It will let you know that you applied the incorrect pattern.

Step 2. On the same prompt, you can see an option of “Forgot pattern” on the bottom. Simply tap on it.

forgot pattern

Step 3. This will open a new screen, which can be used to bypass the forgotten pattern of Android. Select the option for entering the Google Account details and proceed.

Step 4. To reset the forgot pattern lock, you need to provide the correct Google credentials of the account already linked to the Vivo Y77t device.

enter google account

Step 5. After signing in to the interface, you will be asked to provide a new pattern lock for the Vivo Y77t device.

draw an unlock pattern

Step 6. Confirm your choice and set a new pattern lock on your device.

Part 2: How to get past forgot pattern lock using Dr.Fone - Screen Unlock (Android)?

One of the major drawbacks of the “Forgot pattern” feature is that it doesn’t work on new Android devices. Since most of the Vivo Y77t devices out there have been updated, the technique has been outdated. Therefore, you can simply take the assistance of Dr.Fone - Screen Unlock (Android) to bypass the forgot pattern lock on your device. Without causing any harm to your device or erasing its data, your device’s password or pattern would be removed.

It is a part of the Dr.Fone toolkit and is compatible with all the leading Android devices out there. It can be used to remove passwords, patterns, pins, and more. It has an easy-to-use interface and provides a simple click-through process to resolve the forgot pattern Android lock on your device. However, this tool merely retains all the data after unlocking Samsung and LG screens. Other Android locked screens can also be unlocked, and the only thing is that it will wipe all the data after unlocking.

Dr.Fone - Screen Unlock

Save You from Ending up with a Locked Phone After Too Many Pattern Attempts

  • It can remove 4 screen lock types - pattern, PIN, password & fingerprints.
  • Work for Samsung, LG, Huawei phones, Google Pixel, Xiaomi, Lenovo, etc.
  • Unlock 20,000+ models of Android phones & tablets.
  • Enable you to break your Android pattern lock without root.

4,008,669 people have downloaded it

Step 1. To start with, visit the official website of Dr.Fone - Screen Unlock (Android) and download it on your system. After installing it, launch the tool and select the option of “Screen Unlock” from the home screen.

lock screen removal

Step 2. To use its forgot pattern lock feature, you need to connect your Vivo Y77t to your system using a USB cable. Once your device has been detected automatically, just click on the “Android”> “Unlock Android Screen” button.

forgot pattern android - start to remove

Step 3. Select the correct phone brand. It is important to ensure phone brand correctness to prevent bricking.

forgot pattern lock - select model details

Step 4. Then, enter “confirm” in the box to tell the tool that you agree to proceed.

forgot pattern lock - confirm operation

Step 5. Now, in order to fix the forgot pattern Android issue, you need to put your device into the Download Mode. To do this, you need to ensure that your device is switched off. Once it is off, hold the Power, Home, and Volume Down buttons simultaneously. After a while, press the Volume Up button to put your device into Download Mode.

boot device in download mode

Step 6. After your device enters its Download Mode, it will automatically be detected by the interface. It will start downloading the needed recovery packages to resolve the issue. Sit back and relax, as it might take a while to download the recovery packages. Let the application process the essential operations, and don’t disconnect your Vivo Y77t until it is completed successfully.

unlock android pattern

Step 7. In the end, you will get a prompt like this on the screen, informing you that the password/pattern on the Vivo Y77t device has been removed.

unlock android pattern

That’s it! Now, you can disconnect the Vivo Y77t device safely and use it how you like.

Part 3: How to bypass forgot pattern lock using Android Device Manager?

To make it easier for its users to locate, lock, or erase their devices remotely, Google has developed a dedicated feature of the Android Device Manager. It is also commonly known as “Find My Device” as it is mostly used to locate a lost (or stolen) device. Though you can use this feature to ring your device, lock it, unlock it, or erase it remotely. You can access it from anywhere by providing your Google credentials and resolving the forgot pattern Android problem.

All of this can be done by following these steps:

Step 1. Launch a web browser of any device and go to the Android Device Manager website by clicking right here: https://www.google.com/android/find .

Step 2. You need to provide your Google credentials to sign in. Remember, this should be the same Google account that is linked to your device.

Step 3. After signing in, select the target Android device.

Step 4. You will get the location of the Vivo Y77t device with several other options (lock, erase, and ring).

lock android phone

Step 5. Click on the “Lock” button to reset its password.

Step 6. It will open a new pop-up window. From here, you can provide the new password for your device.

Step 7. After confirming your password, you can also provide an optional recovery message and phone number (if your device has been lost or stolen).

enter new password

Step 8. Save your changes and sign out of your account from Android Device Manager.

This will automatically reset the old pattern on your device to the new password.

Part 4: How to bypass forgot Samsung pattern lock using Samsung Find My Mobile

Bypassing a forgotten Samsung pattern lock using the Samsung Find My Mobile service is a method specifically designed for Samsung devices. This method allows you to unlock your Samsung device without losing any data. It’s a convenient way to regain access to your device if you’ve forgotten the pattern lock.

However, it relies on having previously set up Samsung Find My Mobile and linked your device. Here is how to unlock your Samsung device with Samsung Find My Mobile:

Step 1: Access the Find My Mobile (SmartThings Find) website using either a computer or another mobile device. Sign in using the Samsung account details linked to the locked device.

login into samsung find my

Step 2: After successfully logging in, locate the locked Samsung device. Now, click on the “Unlock” feature. Upon choosing this option, a pop-up window will appear. It will prompt you to input your Samsung account password. Once you’ve entered your password, proceed to unlock the Vivo Y77t device by pressing “Next.”

use the unlock feature

Part 5: How to bypass forgot pattern lock using Safe Mode

If you have locked your device using a third-party app, there exists a simple solution. You can use the Safe Mode to remove the problematic app. Safe Mode is intended for troubleshooting and disabling third-party apps. Following are the steps you need to follow to use Safe Mode to unlock your Android device:

Step 1: Initiating Safe Mode requires a simultaneous three-second press of the “Volume Down” and “Power” keys. When the power menu becomes visible, proceed to long-press the “Power Off” icon.

Step 2: In a moment, you’ll see the option “Safe Mode” replacing the other “Power Off” menu options. Proceed to boot your device into Safe Mode and uninstall the troublesome application.

enable the safe mode

Part 6: How to bypass forgot pattern lock using Factory Reset

Bypassing a forgotten pattern lock on an Android device using a factory reset is a last resort. The reason is it will erase all data on your device, including apps, photos, and settings. However, it can be an effective way to regain access to your device when other methods have failed. Here’s how to do it:

Step 1: Turn off your Samsung device and connect it to your computer. Now press and hold “Volume Up” and “Power” keys for a while. Release the keys once the Vivo Y77t device enters Recovery Mode.

Step 2: In Recovery Mode, use the Volume keys to navigate to “Wipe data/factory reset” and select it with the “Power” key. Confirm the action on the next screen by selecting “Factory data reset.”

choose wipe data factory reset

Wrap it up

If you have also forgotten the pattern lock on your device, then you can simply remove or reset it by following these solutions. In this way, you won’t even lose your important data files or cause any harm to your device. Without facing any unwanted setbacks, you would be able to bypass forgot pattern Android using Dr. Fone - Screen Unlock . It provides a fast, reliable, and secure solution to remove the lock screen security of an Android device in an effortless way.

The Ultimate Guide: How to Bypass Swipe Screen to Unlock on Vivo Y77t Device

Nowadays, the security mode is enabled in almost all digital devices, which is the case with our smartphones. However, when we repeatedly change our password, we might be in a state of confusion to remember it. Such instances are highly schemed to lock our messages, galleries, emails, and other personal storage. Using the locking pattern enhances security, and thus, apart from the known user of the Vivo Y77t device, unknown people cannot access your Android phone. To overcome this critical situation, we have this article to help you unlock your Android devices by removing or bypassing the swipe lock Android screen. The solutions provided in this article are easily accessible to all users and are easy to operate.

So, if you have ever been stuck due to a lock code, go through the article to resolve the issue and swipe up to unlock a password that somehow gets forgotten.

Part 1: How to disable Swipe Screen to unlock when you can access the phone?

Some people do not pay much attention to their privacy and will not bother locking their Android devices. They would disable the swipe screen to unlock their devices. Thus, this section will talk about the basic solution to disabling the swipe up to unlock Android devices. Our main focus here is on a disabling method of swiping the screen when your Android device is accessible.

Let us look at the detailed steps below to remove the swipe screen to unlock the Android phone.

Step 1: To begin with, touch the gear icon (that is setting) on the main screen of your Android phone. The settings screen will display directly since it is a shortcut to get in. You will get a drop-down menu where you will see many options are available for your flexibility.

Step 2: Out of those, choose the “Security” tab to access your further.

Step 3: It will prompt the tab as “Screen security,” You will be listed with three choices, namely, Screen lock, Lock screen options, and Owner Information.

android phone screen security

Step 4: Select the option called “Screen lock,” The next step is to enter your PIN code for security purposes. This step is carried out in Android phones to ensure you are the original owner of the Android device.

confirm the screen password

Step 5: If you click the PIN code option again, the drop-down menu will be listed with more options. Now select the option “None.”

disable swipe screen

That’s all. You have successfully run out of the disable commands for the swipe up to unlock the screen. You can now open and access your device without any security methods.

Part 2:How to remove/bypass Swipe to unlock when the phone is locked?

To unlock your device, the only solution is to follow the Dr.Fone - Screen Unlock (Android) . If you are looking to unlock the screen when the phone is locked, then this method solidly proves to bypass swipe lock Android when it is locked. It helps to resolve this issue by bypassing or removing the swipe screen without causing any loss to your data. This tool temporarily supports bypassing Android screens without data loss on Samsung and LG. As for other Android phones, all the data will disappear after unlocking with this tool.

The features of this Dr.Fone software are many. It gives a solution to four lock methods: a pin, pattern, fingerprint, and password. It is user-friendly, and even a user with no technical information can also use it with no issue. This tool is only limited to remove the screen lock on Samsung and LG without losing data. Your data will still be wiped out on other Android phones after using this tool.

Dr.Fone - Screen Unlock (Android)

Remove 4 Types of Android Screen Lock without Data Loss

  • It can remove four-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.

4,008,669 people have downloaded it

Tips: This tool also supports unlocking other Android screens beyond Samsung and LG. However, it does not support saving all the data after unlocking, like Samsung and LG.

Step 1: Initialize the Dr.Fone on the computer, and there will be many options in front of you. In that, select the “Screen Unlock”.

Step 2: Now, to bypass swipe lock Android, using the USB cable, connect the Android device to your computer, and it will prompt the Unlock Android Screen option.

start to unlock Android swipe screen

Step 3: To enable the download mode on your Android device, shut down your phone>Simultaneously, press the volume down, Home button, and Power button >Press the Volume up button. Once your device is in download mode, the recovery kit will get downloaded.

boot in download mode

Step 4: You will see the result right in front of you as Dr.Fone - Screen Unlock, recovery will bypass swipe lock Android without hampering your data. Foremost, you can now access your device without swipe up to unlock the screen.

android phone unlocked

Pretty simple, right? Dr.Fone - Screen Unlock to the rescue for the issue of swipe screen to unlock.

Part 3: How to turn off the swipe to unlock when the pattern is enabled?

In this section, we will cover how to turn off the swipe to unlock when the pattern lock of the Vivo Y77t device is enabled. Therefore, here we will go through the process of turning off the swipe to unlock the feature of your device. This structure is formed in some interval of locking the screen.

The steps below imply turning off of swiping screen instantly:

Step 1: At first, open the app “Setting” present on your Android device.

Step 2: There will be multiple interfaces. Now choose the option “Security.”

android phone security settings

Step 3: To turn off the swipe screen, when the pattern is enabled then, choose “Screen lock” and then click on “NONE.”

select none

Step 4: If you have enabled your pattern choice already, it will again prompt you to enter the pattern. Once you entered the pattern, the swipe screen lock will disappear.

Step 5: The final step is to reboot your Android device to update the feature of turning off the swipe screen. Now you can open your device at any time without using the pattern lock feature.

Note: Regardless of any situation of forgetting the Android lock password, you can go for an email account set up for swiping into the Android devices.

Conclusion

Now, to sum up, we would say that in this article, we tried to bring out the best solutions for your Android device in such cases wherein you want to disable your screen security. The Dr.Fone - Screen Unlock is simply a proven mechanism that delivers what we need and that, too, without any data loss. We ensure that you can disable the swipe screen to unlock easily and effectively using the methods given above. Hence, you can access your phone by bypassing swipe lock Android even if you forget the screen lock code. So, don’t just wait, but bring out the solution for the swipe screen to unlock the Android device with Dr.Fone - Screen Unlock (Android) now.

Bypassing Google Account With vnROM Bypass For Vivo Y77t

Encountering the need to bypass a Google account can be crucial nowadays. This is especially true during device resets or when locked out due to forgotten credentials. Such a need also arises when users encounter factory resets , buy a second-hand device, or forget their login details. In such scenarios, specialized tools like vnROM Bypass come into play. They offer solutions to bypass Google’s verification process.

This article will provide a detailed review of vnROM Bypass, exploring its efficacy and usability. Additionally, alternatives to this tool will be examined. The aim is to provide users with a comprehensive understanding towards this tool and guide them to use. Ultimately, we will determine the best options for bypassing Google account security.

bypass google account with vnrom

Part 1. A Comprehensive Introduction to vnROM Bypass and What It Does?

The vnROM Bypass tool is crafted to bypass Google account verification on Android devices. Its primary utility lies in scenarios where users face an FRP lock after a factory reset or forgotten login credentials. The tool operates through the exploitation of Android OS weaknesses. It empowers users to reclaim entry to their devices without needing the Google account details.

The tool provides a straightforward and user-friendly interface. This makes it relatively easy for users to navigate and perform the necessary steps for bypassing the FRP lock . Moreover, it offers compatibility with a range of Android devices. The app specifically targets those running on Android OS versions 5.0 to 8.1.

How To Download vnROM Bypass

Downloading vnROM FRP Bypass involves obtaining the tool from reputable sources online. The following are the steps you need to follow to download vnROM Bypass:

  • Step 1. On your Android device, open a web browser and visit the vnROM official website. Now tap the three lines icon from the top left corner and press “Bypass FRP.”

navigate bypass frp option

  • Step 2. You will be guided to the vnROM Bypass tool, and by tapping “Download,” the download process begins. Ensure you have enabled installations from unknown sources on your device before moving forward.

download vnrom bypass frp

  • Step 3. After you’ve downloaded the tool, proceed with its installation. Once installed, open the “Settings” app and find the “General Management” option. Now select the “Reset” option and head to the next step.

access general management

  • Step 4. Following this, choose “Factory Data Reset.” Confirm the choice by hitting the “Reset” button and afterward restart your device and input your Google account information.

factory reset your device

Steps To Use vnROM Bypass

Using the vnROM Bypass on your devices turns out to be a simple procedure. Below are the steps for utilizing the vnROM Bypass:

  • Step 1. Access vnROM’s official website via your browser and download the APK file onto a USB drive. This APK serves as the primary application for initiating the bypass. Power up the locked phone and follow the on-screen instructions to set up the mobile device. During the setup process, connect the USB drive to your phone using an OTG cable when prompted to verify your account.
  • Step 2. Install the vnROM bypass APK from the USB drive onto the Vivo Y77t device. Once the APK is installed, navigate to the Vivo Y77t device’s “Settings” menu and perform a factory reset. Upon completion of the factory reset, the Vivo Y77t device will automatically restart. Proceed to set up your phone without providing your Google account credentials.

Part 2. Some Prominent Limitations of vnROM Bypass

vnROM Bypass offers a solution for bypassing FRP lock on certain Android devices. Yet, it comes with several notable limitations that necessitate exploring alternative options. The following are some of the limitations of vnROM Bypass:

1. Limited Compatibility

vnROM Bypass primarily supports Android versions 5.0 to 8.1 (Lollipop to Oreo). Hence, it fails to function on devices operating on more recent Android versions. Android 9 through 14 users might encounter compatibility issues and inefficacy when utilizing this tool.

2. Security Risks

Using bypass tools like vnROM Bypass can potentially expose devices to security risks. One significant factor contributing to this situation is the absence of an official website for the tool. Furthermore, it has not received updates for quite a while. This makes it a potential security risk for newer Android models.

3. Functional Restrictions

This tool has not received updates for some time, so its proper functionality cannot be guaranteed. It seems primarily compatible with older Android devices running on versions 5 through 8.1. Moreover, serious concerns exist about the tool’s effectiveness, even for older devices.

4. Complexity and Reliability Issues

The bypass process using vnROM Bypass can be complex. For users unfamiliar with such tools, it could lead to potential errors. The reliability of the tool’s effectiveness varies across different devices and firmware versions. This results in inconsistent outcomes.

Part 3. Listing Some Quick APK Alternatives of vnROM Bypass

In situations requiring the bypassing of FRP lock via APK services, several alternatives to vnROM Bypass exist. They offer unique functionalities and capabilities catering to different user preferences. The following notable alternatives provide users with different approaches to bypassing Google account locks:

1. Technocare APK

Technocare APK offers a simplified approach to bypassing Google account verification. This tool specializes in bypassing FRP (Factory Reset Protection) locks. It aids users in regaining access to their devices without the original Google account credentials. Its ease of use and compatibility with many Android devices make it notable.

technocare frp bypass apk

2. Pangu FRP Bypass APK

Pangu FRP Bypass APK provides an effective solution for bypassing Google account verification. This tool bypasses FRP locks caused by factory resets or forgotten credentials. It offers a straightforward process to bypass the FRP lock. The tool’s compatibility with various Android versions makes it a suitable choice. This app is especially handy for users encountering Google account lock issues.

pangu frp bypass apk

3. Realterm FRP Bypass APK

Realterm FRP Bypass APK offers an alternative method to bypass Google account verification. It does so by leveraging Realterm software. This tool assists users in overcoming FRP locks and gaining access to their Android devices. Yet, it’s important to note that Realterm FRP Bypass might need more technical know-how. This is the case for successful implementation compared to other alternatives.

realterm frp bypass apk

4. Wondershare Dr.Fone - Screen Unlock (Android)

Wondershare Dr.Fone distinguishes itself as an extensive and easily navigable utility. Crafted to bypass Google account verification and unlock Android devices, it excels as a user-friendly tool. With its intuitive interface, this software assists users in bypassing various screen locks. These include PIN, pattern, password, and Google account locks. Dr.Fone’s effectiveness lies in its compatibility with various Android devices and OS versions.

This guarantees an increased likelihood of bypassing Google account verification successfully. Furthermore, it bypasses the Android FRP lock without requiring a PIN or Google account. Moreover, it supports well-known Android brands such as Samsung, Huawei, LG, Xiaomi, and others. However, Wondershare Dr.Fone – Screen Unlock does not come as an APK but offers a comprehensive platform.

dr fone for frp bypass

Safe downloadsafe & secure

Part 4. [Effective Alternative] Wondershare Dr.Fone Making Google Account Bypass Easy

Do you own an Android with version higher than 8.1? Or do you have a specific Android brand which cannot be bypassed by vnROM Bypass? At such a stage, you might feel stuck with the need to bypass your Google account. While there seems to be no way, Dr.Fone - Screen Unlock (Android) emerges as the perfect remedy in such a situation. This intuitive toolkit provides a comprehensive system of bypassing FRP lock.

With its diversified OS support, it offers better functionality than tools like vnROM Bypass. Along with that, you can also find dedicated support for a huge variety of Android brands. This provides versatility in bypassing Google FRP (Factory Reset Protection) locks. Its intuitive interface makes it accessible even to users with limited technical expertise.

arrow

Dr.Fone - Screen Unlock (Android)

The Best UnlockJunky Alternative to Bypass FRP and Solve Your Screen Locks

  • Remove all Android screen locks (PIN/pattern/fingerprints/face ID) in minutes.
  • Bypass Android FRP lock without a PIN or Google account.New icon
  • Everyone can handle the lock screen without any tech knowledge.
  • Provide specific removal solutions to promise good success rate.

4,008,669 people have downloaded it

Step-by-Step Guide To Bypass Google FRP Account in Dr.Fone

Dr.Fone makes bypassing Google FRP lock a breeze and effortless process. Here are the detailed steps you need to follow to complete this procedure:

How To Bypass FRP on Samsung Devices?

  • Step 1. Samsung Device Connection and Google FRP Lock Removal Setup

To begin, initiate Wondershare Dr.Fone on your computer and connect the Samsung device. Next, navigate to “Screen Unlock” in “Toolbox”, and on the next screen, opt for “Android”. Select “Remove Google FRP Lock” on the following screen. Afterward, select “Samsung” and proceed by clicking the “Start” button.

  • Step 2. OS Version Selection and Hidden Menu Access

Choose the Android OS version on your Samsung device. If you want to use the quickest way to remove Google Lock, opt for the “All Android versions (One-Click Removal)” option. Now, click “Start”, locate and tap the “Emergency Call” button on your Android device. Then input #0# to access a hidden menu and click “Next”.

bypass latest android os

  • Step 3. Authorization and FRP Lock Removal Confirmation

Next, an activation prompt for USB debugging will appear on your Android screen. Upon allowing this on your Samsung device, click “Authorized.” Subsequently, the following screen on your computer will indicate the removal of the FRP lock from your Android device. A prompt window will confirm completion once the FRP lock removal is successful. Click “Done” to conclude the process.

authorize usb debugging

Safe downloadsafe & secure

How To Bypass FRP on Xiaomi/Redmi/OPPO/RealMe/Vivo Devices?

Dr.Fone got you covered if you use a device other than a Samsung device. You can follow these steps to bypass FRP lock on Xiaomi/Redmi/OPPO/RealMe/Vivo Devices:

  • Step 1: Unlocking FRP on Android Devices Using Wondershare Dr.Fone

Open Wondershare Dr.Fone on your computer, navigate to the Toolbox and click Screen Unlock. To bypass the FRP lock, opt for the Android option once the screen appears. Then, choose ‘Remove Google FRP Lock’ from the provided options. Next, select your specific Android phone brand from the options displayed on the screen.

navigate screen unlock option

  • Step 2: FRP Lock Removal Initialization

Upon selecting your device brand, Dr.Fone initiates the download of the necessary driver. Once downloaded, turn off your device and connect it to the computer. While connecting, press the Volume Up and Down buttons for approximately 3 seconds. The FRP lock removal process will commence and may take a few minutes. Once the lock is removed, simply tap “Done” to finalize the process.

follow instructions to commence frp bypass

Conclusion

In summary, this article explored bypassing Google account verification on Android devices. We explored vnROM Bypass, highlighting its functionalities and limitations. Additionally, we presented various APK alternatives, emphasizing the need for a more effective solution. Wondershare Dr.Fone - Screen Unlock (Android) emerged as a standout option for its support for all Android versions and user-friendly interface.


  • Title: Forgot Pattern Lock? Heres How You Can Unlock Vivo Y77t Pattern Lock Screen
  • Author: Peter
  • Created at : 2024-04-02 18:52:15
  • Updated at : 2024-04-05 14:24:57
  • Link: https://android-unlock.techidaily.com/forgot-pattern-lock-heres-how-you-can-unlock-vivo-y77t-pattern-lock-screen-by-drfone-android/
  • License: This work is licensed under CC BY-NC-SA 4.0.
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Forgot Pattern Lock? Heres How You Can Unlock Vivo Y77t Pattern Lock Screen