Mastering Android Device Manager: The Ultimate Guide to Unlocking Your Oppo A78 5G 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!

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 Oppo A78 5G 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 Oppo A78 5G 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.

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.

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

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.

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

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!

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.

How to Unlock Oppo A78 5G Phone without Any Data Loss

In today’s digital age, our Android phones serve as the primary hub of our lives, holding a treasure trove of personal and professional data. Yet, the frustration of being locked out due to forgotten passwords or malfunctioning security features can be overwhelming, compounded by the fear of data loss during the recovery process. However, there’s a beacon of hope - a way to unlock your Android phone without any data loss. In this comprehensive guide, we will explore the latest techniques, tools, and methods to regain access to your Android device safely without a password, PIN, or fingerprint. Let’s dive into it now.

Part 1. How to Unlock Oppo A78 5G Phone with Dr.Fone - Screen Unlock (Android)

If you or someone accidentally forgot or mistyped/misentered your lock password and caused it to lock permanently, of course, you will find ways to unlock it at first. But if you are not connected to the internet, or did not register a Google account for your device, your last resort would be to factory reset your device. That will totally wipe everything you have and save it on your device. If you want to unlock your lock screen without having to worry that your device data will be erased, Dr.Fone - Screen Unlock (Android) is your phone unlocking software .

safe & secure

Note: This tool temporarily support unlocking part of Samsung and LG locked screen without losing data, but other Android phone will be wiped all data if you try to unlock the screen with Dr.Fone - Screen Unlock (Android).

Dr.Fone - Screen Unlock (Android)

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.

4,464,578 people have downloaded it

Steps on How to Unlock an Android Phone with Dr.Fone - Screen Unlock (Android)

Step 1. Connect your Android phone to your PC with Dr.Fone installed, then run the program.

Step 2. Then, you should see the “Screen Unlock” tool, so proceed into it. After that,  click “Android” > “Unlock Android Screen.”

Step 3. Then choose “Remove without Data loss” to unlock part Samsung/LG devices without data loss and find your device model.

Step 4. Follow the instructions on the program to get the Android phone into “Download Mode.”

• 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.

Step 5. The loading process will take you a few minutes because it is going to verify first your device’s compatibility.

Step 6. Wait until everything is done. You should then see your device already has no lock screen.

That’s how to unlock an Android phone with just one click using Wondershare’s Dr.Fone. If your device is not Samsung or LG, you can use a more advanced mode to unlock your phone .

Part 2. How to Unlock Android Phone with Aroma File Manager (with Data Loss)/h2>

If you weren’t able to open your Wi-Fi or data connection or enable USB Debugging, this is the way for you to unlock your lock screen. This could be a bit complicated, but it should work.

Steps are provided below, and please follow the step-by-step guide carefully to avoid a boot loop or any other damage.

Step 1. Download Aroma File Manager on your PC. This is a tool that unlocks Android phones. Android users can use it for free.

Step 2. Go to your Downloads folders and copy the downloaded zip file.

Step 3. Plug into your PC a memory card that you can insert into your phone later. Then, go to your list of connected devices and select the memory card.

Step 4. Paste the copied Aroma zip file. Once copied, eject it from your PC, then insert it into your Android device.

Step 5. Enter Recovery Mode for your device. Each Android device has its own ways of entering recovery mode, so take a look at this link and find your device.

Step 6. When you are already in Android Recovery Mode, use your volume keys to navigate to ‘’apply update from external storage’’, then select the zip file you copied a while ago. It will be flashed on your device.

Step 7. After it, restart, and recovery mode will reopen as Aroma File Manager, so go to its settings and select ‘’Automount all devices on start’’, then restart. Back in Aroma File Manager, go to the directory data>system. Check if the ff. exist. If they do, delete them. Then restart again.

• gesture.key (pattern) / password.key (password)
• locksettings.db
• locksettings.db-shm
• locksettings.db-wal
• signature.key
• sparepassword.key

Now you have your device booted up, and your Android lock screen is still locked, just gesture in or enter anything. It will be unlocked. And that’s how to unlock an Android phone using your device.

Part 3. How to Unlock Android Phone Using Minimal ADB and Fastboot (with Data Loss)

If you weren’t able to connect to the Internet, but you, fortunately, enabled your USB Debugging option before your device was locked, the ARONSDB tool from the Android SDK package can help you unlock your Android phone.

Here is the step-by-step guide for you to follow

Step 1. Go to Minimal ADB and Fastboot download page.

Step 2. Download the tool’s latest version.

Step 3. Open the downloaded Minimal ADB and Fastbootzip file and install it.

Step 4. Make sure your device is connected, then go to the Minimal ADB and Fastboot installation directory.

This PC [Win 8& 10] or My computer [Windows 7 & below]> Local Disk (C:) [primary drive]> Program Files [for 32-bit] or Program Files (x86) [for 64-bit] > Minimal ADB and Fasboot.

Step 5. Inside the folder, hold the Shift key on your keyboard, then right-click your mouse. An additional “Open command window here” will appear so select that.

Step 6. ADB terminal will pop out. Now, the first is to type in ADB devices. This is to check if your device is recognized by ADB. If there is no device listed below, try to remove and reconnect your Oppo A78 5G and retype the command. If there are listed devices already, proceed.

Step 7. Finally, type in the following commands one by one. These commands will remove your lock screen.

• adb shell
• cd /data/data/com.android.providers.settings/databases
• sqlite3 settings.db
• update system set value=0 where
• name=’lock_pattern_autolock’;
• update system set value=0 where
• name=’lockscreen.lockedoutpermanently’;
• .quit

This would work if you have your USB debugging turned on before it was locked. That’s how to unlock Android using ADB.

Part 4: How to Unlock Phone via Find My Device (with Data Loss)

Google Find My Device is another handy way to unlock your locked Android device. However, it requires you to have your Google ID credentials and you have previously enabled Find My Device features. Moreover, it will erase all the data on your device. Use the following steps to unlock your Android phone via Find My Device:

Step 1: Open a web browser on a computer or another device and visit the Find My Device website. Now, sign in with the Google account that is linked to the locked Android device.

Step 2: After signing in, you will see a list of devices associated with your Google account on the left side of the screen. Select the locked Android device from the list and choose the “Erase Device” option from the menu on the left-hand side.

Step 3: You will now be asked to confirm your identity through a Google account password or using a pass-key. Afterward, follow the on-screen instructions to erase and unlock your Android device.

Part 5: How to Unlock Android Phone without Losing Data in Safe Mode

One way to unlock your Android phone without losing the data is by utilizing Safe Mode. This method works only if the screen lock you have been using is a third-party app. Since Safe Mode disables third-party apps, you can easily use it to uninstall the problematic app. Here is how to unlock an Android phone without losing data:

Step 1: On your Android device, press and hold “Power” and “Volume Down” keys together for 3 seconds. After the Power menu becomes visible, press and hold the “Power off” option.

Step 2: After a while, you will see the “Safe Mode” option on your screen with some basic instructions. Now, you can use the button to boot into Safe Mode and remove the screen lock application.

Part 6. How to Unlock Android Phone without Any Data Loss Using Google Account (Android 4.4 or lower)

If luckily, you left your Wi-Fi open and luckily connected to the internet, this is the easiest way to unlock your Android phone.

The step-by-step guide for you to refer

Step 1: Retry the incorrect password or pattern until the ‘’Forgotten Password/Pattern’’ appears below. Then select that.

Step 2: Check ‘’Enter your Google Account details’’ then tap next.

Step 3: Input your Google Account details, username, and password. You are done.

You will be given the option to input a new password or pattern right after you enter your Google account details. But if not, Google must have emailed you your temporary password or pattern that you will input to unlock your lock screen.

Everything You Need to Know about Lock Screen Settings on your Oppo A78 5G

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 Oppo A78 5G device when it’s switched on.

Different Ways of Unlocking Your Oppo A78 5G

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.

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.

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.

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.

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.

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.

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 Oppo A78 5G device’s screen or the dedicated button.

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.

Go to the setting from “Voice Unlock” button and record your voice such as “Open My Oppo A78 5G” 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 Oppo A78 5G 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”.

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

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.

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

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.

Video on How To Remove Android Lock Screen

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