Mastering Android Device Manager The Ultimate Guide to Unlocking Your Nokia XR21 Device

Mastering Android Device Manager The Ultimate Guide to Unlocking Your Nokia XR21 Device

Aaron Lv12

Mastering Android Device Manager: The Ultimate Guide to Unlocking Your Nokia XR21 Device

So, what is Android Device Manager?  Android has this amazing native tool to help you locate and remote wipe your lost or stolen phone. We lock our phones via passwords or patterns or fingerprints to maintain the security but what if someone dares to meddle with your phone or unfortunately, it gets stolen? Don’t worry, all you need to do is let Android Device Manager unlock your Android phone. For this, it just needs to be enabled on your phone (before you unluckily locked yourself out of it). Android Device Manager unlocks your phone in a small amount of time, saving you from all the troubles.

In addition to this, the Android Device Manager also unlocks your password/pin-encrypted phone if you have forgotten the passcode by chance. The procedure is quite simple; all you need is a Google account to set this up onyour phone and then you can make use of any other online device to track down your lost or stolen phone or to even wipe all data in it. Phew!

how to use android device manager

Using the Android Device Manager to track a lost phone

Part 1: What is Android Device Manager lock?

Android Device Manager is Google’s take on Apple’s Find My iPhone. Enabling the ADM is quite easy; just go to google.com/android/devicemanager  on your computer and search through your list of devices that are already connected to your Google account. Once you are there, you can easily send a notification to the phone you want to enable remote password application and wiping upon.

ADM comes with a set of features that helps you to unlock your Android phone as well. It not only helps you to find your device, but also Ring it, lock it, and wipe and erase all the data as well, if your phone is lost or stolen. Once you’re logged into the ADM website from your computer, you can avail all these options once your phone is located. It is a wise option to get your device locked by Android Device Manager in case it is lost or stolen, so that your phone is secured.

Android Device Manager can unlock your phone under a specific set of circumstances only.

  • • First of all, Android Device Manager needs to be enabled on your phone before it is lost, stolen, etc.
  • • Secondly, your phone can only be tracked by ADM if the GPS option is switched on.
  • • Thirdly, the Nokia XR21 device you are using for ADM, must be connected to Wi-Fi or internet, to login to your Google account.
  • • Lastly, Android Device Manager is not compatible for all Android versions. For now, it is only compatible with devices running Android 4.4 and above, so your phone must be in this category for ADM to work.

Part 2: How to unlock Android phone with Android Device Manager?

Just act according to the following steps, and the Android Device Manager will unlock your phone.

1. On your computer or any other mobile phone, visit: google.com/android/devicemanager

2. Then, sign in with the help of your Google login details that you had used in your locked phone as well.

3. In the ADM interface, choose the Nokia XR21 device you want to unlock. Now, select “Lock”.

4. Enter a temporary password. Now go ahead and click on “Lock” again.

5. If the previous step was successful, you should be seeing a confirmation below the box with the buttons – Ring, Lock and Erase.

6. Now, you should see a password field on your phone screen. Enter a temporary password to unlock your phone.

7. Visit your phone’s lock screen settings and disable the temporary password.

unlock with android device manager

The Android Device Manager has successfully unlocked your phone!

A downside to this process, is an error message faced by some users while using ADM. Many users have reported the issue, that when they have tried using ADM to unlock their locked device, an error message has occurred, saying, “since Google has verified that a screen lock is already set”. Basically, this error message conveys that you will not be able to unlock your phone using Android Device Manager, and this is a flaw on Google’s part, not your phone’s.

Part 3: What to do if phone is locked by Android Device Manager

There are 2 situations where you would want to know how to unlock the Android Device Manager lock – one, when you have unfortunately forgotten the screen lock passcode and the other is when your phone is locked by Android Device Manager.

ADM is built to completely lock your device so that unknown people cannot access it. So, if your phone is locked by Android Device Manager, you might be in a problem.While ADM is a wonderful tool to lock your phone or erase and wipe data if its stolen or lost, most of the users have reported the issue that they cannot unlock their phones that are locked by Android Device Manager. A possible solution to this is adding a temporary password via Google login and bypassing the ADM lock. Or, you can try resetting the password again by entering a new password via ADM. If that does not work, you can make use of several third-party applications which can be found in the internet, that will help to completely erase the Android Device Manager lock.

So, now you know how to unlock the Android Device Manager lock. Do keep in mind, your device must be connected to internet or Wi-Fi, to login to your Google account.

Part 4: Unlock Android devices with Dr.Fone - Screen Unlock (Android)

As mentioned before, many were unable to unlock their phones with ADM. This is why we use the Dr.Fone - Screen Unlock (Android) . It is hassle-free and easy-to-use; the Dr.Fone toolkit needs to be downloaded on your computer and with a few easy steps, it erases any kind of lock-screen passcode and avoids any kind of data loss as well!

Dr.Fone - Android Lock Screen Removal

Remove 4 Types of Android Screen Lock without Data Loss

  • It can remove 4 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.

3,224,627 people have downloaded it

This tool works on removing all four types of lock-screen passcodes – PINs, Patterns, Fingerprints, and Passwords. Anyone can use this tool following these easy steps:

You can also use this tool to bypass the locked screen beyond Samsung and LG.Things you should pay attention is that it will remove all the data after finishing unloking on other brand android phone.

1. Fire up the Dr.Fone toolkit for Android on your computer and select the Screen Unlock among all the other tools.

Dr.Fone home

2. Now, connect your Android device to the computer and select phone model in the list on the program.

select model in the list

3. Boot your phone into Download mode:

  • • Power off your Android phone.
  • • Press and hold the volume down+the home button + the power button at the same time.
  • • Press the volume up button to enter Download Mode.

boot in download mode

4. After you get your phone into the Download mode, it will start downloading a recovery package. Wait for this to be completed.

download recovery package

5. When the recovery package download is completed, Dr.Fone toolkit will begin removing the screen lock. This process will not cause any data loss on your Android device, so do not worry. Once the whole procedure is over, you can easily access your Android phone without entering any kind of password. Hurrah!

unlock android phone successfully

The Dr.Fone software is currently compatible with Samsung Galaxy S/Note/Tab series, and LG G2/G3/G4 series. For windows, it is compatible with 10/8.1/8/7/XP/Vista.

The Android Device Manager is an excellent initiative taken by Google to give people the chance to not lose any data and regain access to their phones. This also teaches us to take precautions before such unfortunate incidents take place. Phones are probably one of the most important belongings of ours, in which we confide all our private and confidential documents that we wouldn’t want to be meddled with.

So, make use of this guide and get back command over your Android phone.

Everything You Need to Know about Lock Screen Settings on your Nokia XR21

Everybody of you is well familiar with Android lock screen and it can be undoubtedly said that lock screen does a great job for an Android user. It really works as the main gate of your Android device. It also works as a safeguard of your device from unauthorized access if you enable some sort of protection. By the way, activating the lock screen is optional as you can customize or deactivate it from android lock screen settings.

Here’s a charm that’s you can unlock your lock screen by many ways and you’ve to set the ways from android lock screen settings. Now you’ll come to know how to set different types of screen lock, customize Android lock screen, and even unlock your android phone without resetting it as all the ways of unlocking is related to the Nokia XR21 device when it’s switched on.

Different Ways of Unlocking Your Nokia XR21

First look at the procedures on how you can enable the lock screen functionality from android lock screen settings. To reach the lock screen settings android, you’ve to follow the path:

Options – Security – Screen Lock – Choose Screen Lock.

android lock screen settings

Now see how to unlock your lock screen in different ways.

1.Slide

This is the most common method of unlocking an android lock screen. On all most all the android device, you’ll notice a lock mostly on the right side (sometimes on top) of a round charm. You just have to direct towards the lock and then the lock screen will be unlocked in no time. This method doesn’t provide any security (it just protects your device from sudden access by tapping on screen or any of the button) to your device as no password or PIN is required to set the “Slide” unlock.

BLUETTI NEW LAUNCH AC180T

android lock screen settings

Keep your any finger on the middle of the round charm and by keeping your finger pressed, reach on the lock icon. The lock screen will be unlocked just after reaching your finger to the lock icon.

2.Face Unlock

This method of unlocking your lock screen needs your Android device to snap a photo of your with its camera. After you set the snapped photo as the unlocking recognition, you could unlock your device through showing your face on the screen.

Capture a picture of your face with your Android device’s camera and then set it for logging in into your device. From the lock screen, by just by holding your face, you can log in. It’s very interesting, but you should never rely on this method for strong security as this method of unlocking is prone to break easily as an intruder can unlock your device by putting a photo of you in front of your device. Moreover, this method sometimes doesn’t work properly. So it’s better to go for some other highly secured options for locking your screen.

android lock screen settings

3.Pattern

This is a way of setting pattern for lock screen from a grid of nine dots. You can select the pattern like some letter like Z, L or C etc, but nothing guarantees high security as the set pattern can be easily guessed or be seen while you are unlocking your device. Another problem is that by unlocking with the same pattern, your finger leaves some marks for the pattern’s path. By following the path, a stranger can unlock your device. So for little security, you can use pattern unlock method on your Android device.

android lock screen settings

Go to the lock screen setting for Pattern and then set the pattern by sliding your finger from one dot to another, then another and like that way. Remember which pattern you’ve set in order to unlock your device in the next time.

4.PIN

You might be troubled by thinking about the difference between PIN and Password. A little distinction is there for a PIN and that is it consists of numbers only whereas for password, you can associate some alphabetical letters or signs along with numbers.

android lock screen settings

Go to the lock screen setting for PIN and then set a PIN that consists of minimum 4 digits. It’s your choice to use 4 or more digit PIN. After setting the PIN, you can access your Android device by putting the PIN in a box from the lock screen. PIN protected lock screen is highly protected if the PIN is set strongly.

5.Password

In addition to PIN protection, you can consider it as password by adding some letters, special characters with the previously selected PIN codes. It’s also very much highly protected method of locking screen though you might be bored with tapping for the password again and again. But never ignore the value of your device’s files, so a password can be a well-sought lock screen protection for many users.

android lock screen settings

6.Fingerprint

In some of the modern Android device, you’ll find the feature of fingerprint unlocking. You can find the option through the screen or any dedicated button. By setting your fingerprint, you can unlock your device by tapping your finger on the Nokia XR21 device’s screen or the dedicated button.

android lock screen settings

7.Voice

This is also a fun way of unlocking Android lock screen as you can unlock by saying the same voice that you’ve saved as the unlocking recognition.

android lock screen settings

Go to the setting from “Voice Unlock” button and record your voice such as “Open My Nokia XR21” or as per your choice with clear sound. Repeat the voice a few more times as to match well. Then set and unlock your device from the lock screen by using the same voice command.

Customize Android Lock Screen

Lock Screen Widgets

Widgets can be used from Android lock screen without unlocking the Nokia XR21 device first. Also, because of this, any one who can access your phone can see your information from widgets. But since Lollipop update, widgets has been changed to Notifications on Android. Here, let’s see how to set customize widgets on Android running OS before lollipop. You can also find some useful alternatives to lock screen widgets here.

For devices running Android 4.2 or 4.3, lock screen widgets are enabled by default. So you can use them directly. For users of KitKat, you can go to Settings, select Security, and find Enable Widgets option. To add a new widget to the lock screen, swipe the screen from left to right until there is a plus on the screen. Tap the plus and select the widget you would like to add. You can also drag the widgets to repalce it.

Smart Lock on Android

Smart Lock is a new feature introduced in Lollipop. It helps you keep your device unlocked when it’ safe with you, by recognizing locations, bluetooth system, or smartwatch etc. To know more about Smart lock settings , just follow the information here.

Customize Lock Screen Wallpaper

Except all the different types lock method to protect your phone, there are also many wallpapers to make your lock screen lool beautiful or cool. Click here to check out how to change lock screen wallpapers and download more beatiful wallpapers from different sites.

Bypass your Samsung Phone’s Lock Screen using Dr.Fone - Screen Unlock (Android)

This is an easy way to unlock your Samsung device if you forgot your Samsung’s lock screen pattern, PIN or password.It’s named Dr.Fone - Screen Unlock (Android) ,which is the best tool to solve your problems with simple steps.

Note: If your are using Samsung or Lg, then this tool can perfectly remove the locked screen while keeping all the data. As for thoes users who are using Andriod phone, this tool still can help you unlock the screen while you will lose all your data after unlocking.

Dr.Fone - Android Lock Screen Removal

Remove 4 Types of Android Screen Lock without Data Loss

  • It can remove 4 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 .

3,587,277 people have downloaded it

Follow the steps on how to bypass your Samsung Phone’s lock screen by Dr.Fone - Screen Unlock (Android)

Step 1. Run Dr.Fone and choose “Screen Unlock”.

bypass Samsung Phone's lock screen

Step 2. Connect your Samsung with USB on computer,then you will see the windows as follow,and select phone model in the list.

bypass Samsung Phone's lock screen

Step 3. Enter the download mode on your Samsung device. Follow the guide of the windows.

  • 1.Power off the phone.
  • 2.Press and hold volume down + home button + power button at the same time.
  • 3.Press the volume up to enter download mode.

bypass Samsung Phone's lock screen

Step 4. Download the recovery package after your device model matched successfully.

bypass Samsung Phone's lock screen

Step 5. When the recovery package is downloaded completed,you can start the process of unlock,the whole process won’t lose any data on your device.You can access your device without entering any password or PIN after the process is finished.

bypass Samsung Phone's lock screen

Video on How To Remove Android Lock Screen

Pattern Locks Are Unsafe: Secure Your Nokia XR21 Phone Now with These Tips

Pattern locks have been available for about as long as people can remember, and they have been hugely popular with people thanks to how easy it is to simply swipe your screen and unlock your smartphone, as against, say, keying in the 4-digit PIN/ 6-digit PIN. However, pattern locks are easy to crack, and today, we bring you all you want to know about pattern locks and how to create a hard pattern lock. Further to this, we also tell you how to move beyond pattern locks and what to do in case you forgot the hard pattern lock you just set and are unable to unlock your smartphone.

creating more secure pattern locks

Part 1: What You Need to Know About Pattern Locks

Pattern lock is an Android-only feature that makes it easy for users to have a modicum of security on their smartphones. Most users do not prefer using and remembering a PIN to unlock the smartphone. Creating a pattern makes it easier, somehow.

There is a 9-point grid on which you swipe your finger from point to point, in any direction, and when you take your finger off, that pattern you swiped becomes the key to unlock your smartphone.

Pattern locks were exceedingly common only a few years ago, and they are not recommended for use any longer due to concerns (mentioned later in the article).

1.1: Popularity and Usage

Old habits die hard, or so they say, right? That’s because it is true. We are creatures of habit, and pattern locks have been around for a long, long time. We are accustomed to pattern locks. So, even with even easier technologies such as fingerprint recognition and face recognition, we tend to gravitate towards the familiar old pattern lock.

The only thing is, there is a reason why pattern locks are no longer the preferred option to use for unlocking your smartphones. As it happens, that reason is security, and it can be very easy for humans to take a swipe (pardon the pun) at your pattern lock. And guess what? The research conducted suggests that they would get it right with an unsettling accuracy.

1.2: Advantages and Drawbacks

With on-the-go lifestyles, our smartphones have become indispensable and contain some of the most sensitive aspects of our lives – IDs, credit and debit cards in digital wallets, photo and video memories, business documents – you name it, the smartphones have it, on the go. This has opened our lives up to the public at large, and if someone steals our smartphone or, best case, finds it, the only barrier preventing them from being privy to all that wealth of our sensitive information is that screen lock – the pattern lock that we set on our smartphones. That’s it – the single pattern lock stands between malicious actors and our data. You might be beginning to realize just how crazy this is.

Advantages of Pattern Locks

There are two advantages to using pattern locks. One, they are better than nothing. Two, they are easy to use. And that’s about it. There is no third advantage to pattern locks. We might think we set a hard pattern lock that nobody could guess, but, as research proves, we might be thinking too low of human prowess.

Disadvantages of Pattern Locks

Security, or rather, the lack of it, is the lone disadvantage of using a pattern lock. What good is a pattern lock that can be easily deciphered? Sure, they are easy to use, and they are better than not having anything, but would you really want to protect your life’s data with something that could be, as researchers found out, breached in under 5 attempts? We don’t think you do!

The research found that 64% of test subjects who were shown videos of people unlocking their phones could correctly guess a 6-point pattern lock, that too after viewing the video only once! That number shot up to 80% if they were allowed to see the video again. That is simply astounding and a nightmare for security. When it comes to PINs, only 11% could guess a 6-digit PIN after viewing the unlocking video once, and that number shot up to 27% when they could see the video two times.

Part 2: How To Create a Hard Pattern Lock (Including Remembering Complex Patterns)

Now, if you must continue using a pattern lock, let’s help you know how to create a hard pattern lock that would not be as easy to decipher as easy pattern locks. For that, you should know how people use pattern locks, the kind of pattern locks they create, and the ones that are the most commonly used pattern locks. That way, you can avoid those fallacies and create a hard pattern lock for your smartphone.

2.1: The Pattern Locks People Use Most Commonly

common pattern locks

Marte Loge, an M.Sc. Computer Science student, gave a presentation on pattern locks at DEFCON 23 and made a bold claim. She said, “Tell me who you are, and I will tell you your lock pattern.”

She presented the following statistics to support her claim:

  • - In her research, she found that 77% of people started with one of the 4 corners when creating a pattern lock.
  • - 44% of people started with the top-left dot and 15% with the top-right, while the bottom-left was preferred by 14% of her test subjects.
  • - People set 5-point pattern locks on average, and most users were content with a 4-point pattern.

These are some of the most common pattern locks people create:

  • - patterns in the shapes of alphabets,
  • - patterns in the shapes of numerals,
  • - patterns in any other simple shape, such as square, triangle, star, etc.

To understand how this is a security nightmare, the possible combinations for a 4-point pattern are a measly 1624, whereas by adding just 1 more point to the pattern and creating a 5-point pattern, the number of possible combinations becomes 7152, an increase of 5528 combinations. In stark contrast, creating a 9-point pattern would give you over 140,000 possible combinations!

2.2: How to Create a Hard Pattern Lock

Knowing what most people do when creating a pattern lock, it becomes easy to avoid those mistakes and instead create a hard pattern lock for oneself.

  • - Do not start creating a pattern lock from any of the 4 corners of the grid.
  • - Never use your first initial as your pattern lock.
  • - Never use the shape of a numeral as your pattern lock.
  • - Use all 9 points on the grid to create your pattern lock, and contrary to popular belief, you can go over the connecting lines several times, creating a hard pattern lock that would not be as easy for people to decipher!

Part 3: Going Beyond Pattern Locks

You might think that now that you have set a hard pattern lock, you are good to go. Hardly. Technology has evolved, so have methods to break into your device.

Step 1: Set a 6-digit PIN

The minimum you should do today is set a 6-digit PIN to unlock your phone. Consider this a necessary investment into the safety of your data residing on your smartphone.

Step 2: Use Fingerprint Recognition (or Face Recognition on Apple Devices)

All modern smartphones released over the last decade have come with fingerprint recognition. Using fingerprint recognition requires you to set a 6-digit PIN and then set a fingerprint to unlock your device. You can set additional fingerprints, too.

This way, your device is the most secure it can be today. In case your fingerprint is not recognized for any reason, the phone falls back on the 6-digit PIN that you can enter and unlock your phone.

While face recognition is available on both Android and Apple devices, it is truly secure only on Apple devices. This is why Apple iPhones released after the iPhone X in 2017 have come only with Face ID. They fall back on a minimum 6-digit PIN (called Passcode in Apple world) to unlock in case the face does not get recognized in the first attempt.

Part 4: How To Unlock Phone If Hard Pattern Lock Forgotten

Just in case you set a hard pattern lock and promptly forgot that abstruse pattern you just set, we have a tool for you to quickly unlock your phone in case of a forgotten hard pattern lock: Wondershare Dr.Fone - Screen Unlock.

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Dr.Fone - Screen Unlock (Android)

Remove the Hard Pattern Lock on Your Nokia XR21 If You Forgot!

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

4,008,671 people have downloaded it

Download the latest version of Dr.Fone from the Wondershare website and launch the app.

drfone app

Step 1: Click Android under Toolbox > Screen Unlock.

drfone android screen unlock

Step 2: Click Unlock Android Screen.

drfone screen unlock android

Step 3: Select your device manufacturer.

drfone screen unlock manufacturer selection

Step 4: Prepare your device to unlock the screen.

wipe partition cache instructions

When the greyed Next button becomes available, click it and wait for your device to be unlocked.

screen unlock successful

All data on the Nokia XR21 device is wiped under this method. Select Samsung phones may be unlocked without data loss. Check this list for devices that may be unlocked without data loss.

Closing Words

Whether it is an easy pattern lock or a hard pattern lock, the fact is that pattern locks are antiquated and a security nightmare. A minimum 6-digit PIN must be used, and using fingerprint recognition is the preferred way to go for Android devices. Using fingerprint recognition will require that users create a 6-digit PIN. On Apple devices launched after 2017, there is Face ID, Apple’s marketing term for face recognition. If you did indeed still set a hard pattern lock, only to promptly forget it, use Wondershare Dr.Fone – Screen Unlock (Android) to seamlessly unlock your phone right now.


  • Title: Mastering Android Device Manager The Ultimate Guide to Unlocking Your Nokia XR21 Device
  • Author: Aaron
  • Created at : 2024-07-15 19:20:25
  • Updated at : 2024-07-16 19:20:25
  • Link: https://easy-unlock-android.techidaily.com/mastering-android-device-manager-the-ultimate-guide-to-unlocking-your-nokia-xr21-device-by-drfone-android/
  • License: This work is licensed under CC BY-NC-SA 4.0.