How to easily hard reset my Vivo Y91?
Mar 27, 2026 • Filed to: Phone Repair Solutions • Proven solutions
Vivo Y91 hard reset is one of the fastest ways to erase all data, remove settings problems, and restore the phone to factory condition. If you are searching for how to hard reset Vivo Y91 without password or Vivo Y91 hard reset forgot password, the most common methods are recovery mode, Google Find My Device, or a dedicated unlock tool. The right choice depends on whether your phone is locked, whether Find My Device is enabled, and whether you want to keep or erase your data.
It is also important to understand that hard reset and password unlock are not always the same. A hard reset usually wipes the phone completely, while some unlock tools focus on removing the screen lock or helping you regain access. In this guide, you will learn when a Vivo Y91 hard reset is necessary, how to reset the phone with or without password, and which tools can help with Vivo Y91 lock remove if you forgot the screen lock.
Part 1: Why Do I Need a Hard Reset on Vivo Y91?
Direct answer: A hard reset is useful when your Vivo Y91 is locked, running too slowly, full of unnecessary data, or about to be sold. It removes apps, settings, saved files, and personal information so the device returns to a clean factory state. For users searching reset Vivo Y91 or hard reset Vivo Y91, these are the most common situations where a reset makes sense.
If you are searching for ways to reset a Vivo Y91 or unlock a Vivo Y91 after forgetting the password, the reasons below explain when a full reset is the right solution and when a password unlock tool may be better.
Too many wrong attempts
When you forget the PIN, password, or pattern on your Vivo Y91, repeated failed attempts can leave you locked out of the device. In this situation, many users look for Vivo Y91 hard reset without password, Vivo Y91 password unlock, or Vivo Y91 lock remove. A hard reset through recovery mode is one of the common solutions, although it usually erases your data.
Plan to sell it
If you plan to sell, recycle, or give away your phone, a full reset is strongly recommended. Simply deleting files or signing out of accounts is not always enough. A Vivo Y91 hard reset helps remove your personal photos, messages, saved passwords, app data, and account information before the device changes hands.
Free up more storage
Over time, old files, app caches, and poorly managed storage can slow your phone down. If your Vivo Y91 freezes, lags, or runs out of space often, a factory reset may improve overall performance. That is why many users search for reset Vivo Y91 even when the issue is performance rather than a forgotten password.
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Part 2: How to Hard Reset Vivo Y91?
Direct answer: You can hard reset the Vivo Y91 in several ways depending on whether the phone is unlocked, whether you remember the password, and whether remote options are enabled. If the phone is still accessible, reset it from Settings. If you forgot the password, recovery mode is usually the most common built-in method. If your Google account is linked to the device, Find My Device may also help erase it remotely.
For users searching how to hard reset Vivo Y91 without password, Vivo Y91 hard reset forgot password, or Vivo Y91 password unlock code, the methods below explain what works in each situation and what kind of data loss to expect.
Hard Reset from Settings (with password)
Best for: users who can still unlock the phone normally. This is the easiest built-in reset option because it does not require button combinations or remote tools. If you still know the screen password, PIN, or pattern, start here.
- Turn your phone on.
- Click the Settings icon from your home screen or app menu.
- Navigate to the More settings option.
- Select Backup and Reset > Erase all data option.
- Click on Erase everything.
- Choose the option Reset phone, and your Vivo Y91 hard reset process will start.
This method is simple, but it only works when you already have access to the phone. It is not suitable for users who forgot the screen lock.
Enter Recovery Mode
Best for: users who need Vivo Y91 hard reset without password. Recovery mode is the most common built-in answer when the device is locked and you cannot reach Settings. Keep in mind that this process normally erases all local data on the phone.
- Turn off your phone.
- Press and hold either of these button combinations till you see the logo on your screen.
- Volume Up + Power Button or
- Volume Down + Power Button.
- When you see the logo, release all the buttons.
- A screen will show “No command” with an Android robot.
- Now, press the Volume Up and Power buttons to enter Recovery mode.
- Select the wipe data option in the next screen by using Volume Buttons and confirm with the Power button.
- Select the Yes option using the volume buttons and press the Power Button.
- Once the reset is complete, you will see the recovery mode menu again.
- Press the Power button to select Reboot system now.
- When the reboot process completes, your Vivo Y91 hard reset is complete.
If your main question is how to hard reset Vivo Y91 without password, this is usually the method most users try first. However, it is a factory reset, so you should expect data loss unless your files are backed up.
Google Find My Device (Data Loss)
Best for: users who linked the phone to a Google account before getting locked out. Google Find My Device can erase the Vivo Y91 remotely, which is useful if the phone is lost, inaccessible, or no longer in your hands. Like recovery mode, this method wipes data from the device.

- In your computer's browser, open Google Find My Device website.
- Sign in using the Google username and password.
- You will see three options after login, i.e., Play Sound, Secure device and Erase device.
- Click on the Erase device option.
- In the Erase all data menu, choose the Erase option.
- Voila! Your Vivo Y91 hard reset is complete.
This option is helpful if the phone is online and already connected to your Google account. It is a practical answer for users who want a remote Vivo Y91 hard reset.
Gmail Account
Best for: users with older Android-style account recovery scenarios. Some users search for Vivo Y91 password unlock or Vivo Y91 password unlock code hoping there is a simple universal code, but in practice, account-based recovery is more realistic than a generic unlock code.
- Switch on your mobile.
- After several unsuccessful password attempts on your Vivo Y91 mobile, you will see the Forgot pattern option. Click on it.
- Now, choose Google account detail from the menu.

- Afterward, choose a new password, pattern, or PIN that you want to use for your phone.
- Finally, your phone is unlocked.
This method may not be available in every setup, but it can help if your device still supports account-based recovery after failed attempts.
Part 3: Some Efficient Tools to Fix Your Problems
Direct answer: If the built-in methods above feel too technical, or if you want a clearer workflow for either wiping or unlocking the device, dedicated tools can make the process easier. For most users, the choice is simple: use Dr.Fone - Data Eraser if you want to wipe the device completely, and use Dr.Fone - Screen Unlock if your main problem is a forgotten screen password or lock screen removal.
Dr.Fone - Data Eraser
Best for: users who want to permanently erase the phone before resale, recycling, or privacy protection. If your goal is not just to reset the phone but to make your data harder to recover, this option is a stronger match. It is also suitable when you want a cleaner and more guided alternative to a manual factory reset.
Dr.Fone - Data Eraser removes data, saved passwords, messages, login information, browser history, cache data, photos, music, videos, and other files from your Android and iPhone. If you are selling your phone or want to wipe clean your phone's memory, this is your best solution. The data is unrecoverable and thus very secure. Here is how it works.
- Launch Dr.Fone on your computer and select "Data Eraser" from the main menu.

Using a USB cable, connect your Android phone to the computer.

- Dr. Fone's data eraser will connect to your device. Click on the "Erase All Data" button to start the process.

Read and confirm the popup warning. Punch in "000000" into the textbox to confirm the operation.

Keep your phone connected to your computer till the erase process is complete. It may take a few minutes.

- When the data erasing is complete, you will see Factory Data Reset or Erase All Data on the phone. This will complete the Vivo Y91 hard reset process.

Finally, it is done.

Dr.Fone - Screen Unlock
Best for: users who forgot their password, PIN, or pattern and want a more guided Vivo Y91 lock remove solution. If your main search intent is Vivo Y91 hard reset unlock tool, Vivo Y91 password unlock, or Vivo Y91 hard reset forgot password, this is the more relevant tool because it targets the lock screen problem directly.
How to hard reset Vivo Y91 without a password? If you are here because you forgot the screen lock and want an easier alternative to button-based reset steps, Dr.Fone - Screen Unlock is a better tool for you.
Let's see how it works to remove the Vivo Y91 lock screen. Download and install the software and then follow these steps.
- Connect your Vivo Y91 phone to the computer.
- Launch the Dr. Fone program on your computer and choose "Screen Unlock" from the software's main menu.

- Dr.Fone shows you a list of Android phone brands; choose Vivo here. You must choose the correct brand because the tool's mechanism might differ on different models.

- Go into download mode.

- Switch off your Vivo Y91 phone.
- Press Volume Down + Home button + Power button simultaneously till you see the menu. Use the Volume Up button to choose Download Mode.
- Wait till downloading of the recovery package is complete, and move to the next step.
- Click the "Remove Now" button to start the process.

- Finally, your phone's screen lock is removed.

Dr. Fone App-Screen Unlock (Android)
Tips: If you're stuck with a locked Android screen and can't remember the password, don't worry—Wondershare Dr.Fone App-Screen Unlock (Android) is here to help. This handy app makes it easy to unlock your phone without needing a computer. Compatible with devices from Samsung, Huawei, Xiaomi, and others, you won't have to stress about losing access to your phone. Simply download the app and follow the straightforward steps to regain control of your device effortlessly. Say goodbye to lock screen frustrations and hello to easy access!
Conclusion
Vivo Y91 hard reset is a useful solution when you are locked out, preparing the phone for resale, or trying to fix serious performance and storage problems. If you still have access to the phone, resetting from Settings is the easiest method. If you forgot the password, recovery mode is the most common built-in option. If your Google account is already linked, Find My Device may help you erase the phone remotely.
In short, the best method depends on your goal. If you want a full factory wipe, use a reset option or Dr.Fone - Data Eraser. If your main problem is a forgotten lock screen and you want a more guided Vivo Y91 password unlock or Vivo Y91 lock remove solution, Dr.Fone - Screen Unlock is the better fit. Before you proceed, back up your important files whenever possible, because most hard reset methods will erase your data.
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James Davis
staff Editor