Mastering Android Device Manager: The Ultimate Guide to Unlocking Your Realme C55 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 Realme C55 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 Realme C55 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.

Universal Unlock Pattern for Realme C55

Why do you use a mobile password or pattern to lock your phone? Of course, you want to keep your personal information private from prying eyes. Have you ever been in a position where you recently changed your pattern lock or password code but then forgot it? We’ll talk about how to unlock your Android phone’s universal pattern lock.

We’ve recently received many feedback and questions from users who want to use a pattern unlock on their device. Whether you’ve forgotten your Android device’s password or want to gain access to someone else’s phone, there are a number of ways to figure out how to unlock a pattern on an Android phone. This comprWe’llhensive guide wi show you how to unlock patterns in six ways.

Part 1: Common universal unlock pattern for Realme C55

Today, many mobile phone users present a simple lock pattern that isn’t particularly strong or difficult to detect. That is something that many of us are guilty of. Lock patterns were intended to take the place of traditional passwords, however, we frequently forgo security in favor of easier lock patterns. Let’s look at some of the most frequent pattern locks in use today.

1. Patterns from the Upper Left Corner: It’s estimated that 44% of people begin their patterns from the upper left corner.
2. Other Corners: According to research, around 77 percent of users begin their patterns in one of the remaining three corners.
3. Nodes: It was discovered that many users only utilized five nodes. While a larger number of individuals used 4 nodes.
4. Letter Patterns: According to a study, around 10% of lock patterns are in the form of an alphabet. Some users just use the initial of their name.

Part 2: [Easiest] Universal way to Unlock Pattern for Realme C55

If you want the easiest method to unlock an Android phone, then Dr.Fone - Screen Unlock (Android) is an amazing choice. It is a tool that allows you to unlock your phone without much hassle. You can use it for universal pattern lock for MI, or other phones.

If you need to unlock a pin, pattern, password, fingerprint, or any other type of lock on an Android smartphone, Dr.Fone - Screen Unlock is the tool to use. It is a highly useful and sophisticated tool that allows you to bypass your device’s lock screen without harming it or erasing its contents (if your phone is not a Samsung or LG, the data will be erased after unlocking the screen).

Dr.Fone - Screen Unlock (Android)

Remove Android lock screen in 5 minutes

• On Android, disable all patterns, PINs, passwords, and fingerprint locks.
• Bypass Android FRP lock without a PIN or Google account.
• During the unlocking process, no data is lost or hacked.
• On-screen instructions are simple to follow.
• Mainstream Android devices are supported.

3,291,332 people have downloaded it

Know how do you use Dr.Fone - Screen Unlock (Android) to unlock a pattern lock

Step 1: Download and run Dr.Fone – Screen Unlock to unlock your phone’s pattern. Select the “Screen Unlock” option from the home screen.

Step 2: Make sure your device is connected to the system. Select “Android” to continue, then click the “Unlock Android Screen” button once it has been recognized.

Step 3: On the next screen, choose the correct model and other information of your device.

Step 4: Now, turn your phone into download mode. Turn it off and simultaneously hit the Home, Power, and Volume Down keys. Then, on your device, hit the Volume Up key to enter Download Mode.

Step 5: Relax while downloading the recovery software and completing the necessary steps to unlock your handset.

Step 6: Click on “Remove Now” button and the unlocking process will begin.

Step 7: When the process is finished, you will be alerted. Simply unplug your device and use it without a password or pattern lock.

safe & secure

Part 3: Other ways to Unlock Pattern for Android

There are other ways to unlock the universal unlock patterns for Android. We have mentioned some of them below.

Way 1: Remove Gesture File Using ADB

The first method is ADB, which stands for Android Debug Bridge. With the help of this, you can unlock your Android’s universal unlock pattern without the need of a factory reset. However, the process may seem a bit time-consuming to you. Here is how you can do it.

Step 1: Open your PC and head to Android Developer’s site . Download ADB now.

Step 2: Launch it now and install the packages on your PC.

Step 3: Connect your Android to PC now. Before that, make sure to enable USB Debugging. If you don’t know-how, simply head to the “Settings”> “About Phone” and tap on “Build Number” 7 times. This will enable the Developer’s Options.

Step 4: Now go to the Developer Options menu and turn on the USB Debugging.

Step 5: After connecting Android to PC, you need to open the command prompt in the installation directory.

Step 6: Run the following command and press Enter key: adb shell rm /data/system/gesture.key

In regular mode, restart the phone. The pattern will be requested. However, any pattern will unlock the screen.

Way 2: Boot into Safe Mode to Bypass Third-Party App Screen Lock

It’s one of the most straightforward ways to get past the lock screen. One thing to note is that this method is effective only if the lock screen is a third-party app rather than the standard one.

Step 1: Firstly, long-press the Power button to get the power menu.

Step 2: Now, long tap the “Power Off” button and click “OK” when shown the pop-up.

Step 3: This will restart your device in safe mode.

Step 4: This will turn off the third-party lock screen for the time being. Clear the lock screen app’s data, uninstall it, and then reboot to exit safe mode.

Way 3: Unlock Pattern Lock via Factory Reset

This should only be a last option because it will completely delete your device’s data and saved settings. Your device will be reset to factory settings, meaning your device’s settings will get back to the same as when you first bought it. If you want to learn how to unlock a pattern by doing a factory reset, follow these steps:

Step 1: Long press the Home, Power and Volume Up keys to Recovery Mode.

Please note that the Recovery mode method may vary from device to device. So please ensure to check the key combination before you do it.

Step 2: Now go to the “wipe data/factory reset” option using the volume keys. To confirm it, press the Power key.

Step 3: Now, again, confirm the process using the same keys.

Step 4: The phone will perform the factory reset. In a short while, restart your device and there will be no lock screen.

Way 4: Unlock Pattern Lock with Android Device Manager

Android Device Manager unlocking is the second-best service for bypassing the Android lock screen on locked Android devices and tablets. Working on this service is quite straightforward, and it only works if the user has a Google account. This service is accessible and usable from any device or computer.

There are a few things to keep in mind as you use this service to get around the lock screen. If the Android device is compatible, the Android Device Manager will connect it after a few tries. After it has been connected to the Realme C55 device, we can begin by pressing the “Lock” button.

After pressing the “Lock” button, a popup will appear, asking for a new password to replace the forgotten pin, pattern, or password.

Type the new password once, then confirm it by typing it again. This will change the password in a few minutes and the new password can be used to unlock the Realme C55 device.

Way 5: Use Forgot Pattern Feature [Android 4.4 Version and Earlier]

If you use an older Android version, you can get rid of the universal unlock pattern by forgot pattern feature. On earlier Android devices, this feature is enabled by default. After a few failed attempts, the warning “Try again in 30 seconds” appears and here is where the steps begin. Let us get to know in detail.

Step 1: Simply enter wrong pattern too many times until try again in 30 seconds warning comes.

Step 2: Select the “Forgot Pattern” option below the message.

Enter the primary Gmail account and password you used to set up your Android smartphone after selecting the same. Then you must provide your Google account information. A new unlock pattern will be emailed to you by Google.

Conclusion

Universal unlock patterns allow you to unlock your phone easily when you think you have forgotten. Well, numerous patterns allow you to unlock the Android. You can choose either of the above to unlock your android phone. If you have failed to use any pattern, you can easily unlock your Android by Dr.Fone - Screen Unlock (Android) . It will let you access yours by unlocking it hassle-free.

Top 12 Prominent Realme C55 Fingerprint Not Working Solutions

Part 1. Optimal Solution: Unlock With Wondershare Dr.Fone Directly

Facing a malfunctioning fingerprint on your Realme C55 can be frustrating. In this scenario, the most effective resolution is the removal of the registered fingerprint. Yet, traditional methods of removing the fingerprint can be difficult and pose security risks. In this case, going for tools like Wondershare Dr.Fone is the best choice. This tool ensures your Pixel device is at no risk.

Dr.Fone offers a swift solution to remove the Android lock screen in five minutes. It effectively removes 4 types of screen locks. These include patterns, PINs, passwords, and fingerprints. Dr.Fone can bypass the Android FRP lock without needing a PIN or Google account. It ensures accessibility to the Android device without such credentials.

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 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.

4,008,672 people have downloaded it

Prominent Features of Wondershare Dr.Fone

1. FRP bypass is enabled for brands like Samsung, Xiaomi, Redmi, Oppo, Realme , and Vivo.
2. With Dr.Fone, bypassing screen locks can be achieved without data loss.
3. Fone supports 2000+ Android phones and tablets from over 18 brands for screen unlocking.

Step-by-Step Guide To Remove Fingerprint Type Lock on Google Pixel Using Dr.Fone

With Dr.Fone, you can resolve the Realme C55 fingerprint sensor not working issue within minutes. Below is a detailed walkthrough for removing a fingerprint lock on a Google Pixel:

• Step 1: Connecting and Accessing Screen Unlock Feature on Dr.Fone

Open Wondershare Dr.Fone and connect your Android device via a USB cable. Once the connection is established, navigate to the “Toolbox” tab and choose “Screen Unlock.” Upon reaching the new screen, choose the “Android” option. Then, select “Unlock Android Screen” from the options on the following screen.

• Step 2: Selecting Google As the Realme C55 device Brand and Activating Recovery Mode

Afterward, you’ll be guided to a subsequent screen prompting you to choose the Realme C55 device brand, Google. Once you select the brand, you’ll be directed to enter a specific mode corresponding to it. For Google Pixel Devices, the specific mode to enter is Recovery Mode. Simply follow the on-screen instructions to activate Recovery Mode on your device.

• Step 3: Initiate the Fingerprint Removal Process

After entering Recovery Mode, the screen unlocking procedure will initiate automatically. Please wait for the fingerprint removal process to finish. In case of failure, select “Try Again” to attempt unlocking again. Upon successfully unlocking your Android device’s screen, tap “Done.”

Part 2. 11 Conventional Solutions To Resolve Pixel Fingerprint Not Working

The solution above using Wondershare Dr.Fone is an effective and comprehensive method. It can tackle fingerprint recognition issues, but sometimes, users may look for simpler alternatives. We will explore conventional solutions that can address Pixel fingerprint problems. Each solution will also explain the underlying reasons for the Pixel 6 fingerprint sensor issue.

1. Fingerprint Sensor Not Touched Firmly

Problem

If the fingerprint sensor fails to recognize your fingerprint, it might be due to inadequate pressure. This could also be due to improper finger placement on the sensor.

Solution: Firm Placement

Ensure you firmly place your finger on the sensor, covering it entirely. Avoid too much pressure, but make sure the sensor fully contacts your fingerprint.

2. Device Showing Glitches

Problem

Glitches or software bugs in your Pixel device may cause disruptions. This can include issues with the fingerprint sensor’s functionality. These problems can range from minor issues to severe software glitches.

Solution: Restart Your Pixel Device

One of the easiest and simplest solutions is to restart your Pixel phone. You can do that by pressing the “Power” and the “Volume Up” keys. It will lead to a pop-up power menu where you must choose “Restart” to reboot your device.

3. Outdated Firmware

Problem

An outdated operating system or firmware can lead to compatibility issues. This can lead to malfunctioning features like the Pixel 6A fingerprint sensor not working.

Solution: Check for Updates

The best way to resolve this issue is to update your Pixel device. Having an outdated version of Android OS can lead to an accumulation of bugs and glitches. Moreover, it can seriously affect the Realme C55 device’s performance, causing many issues. Here is how to check and update your Pixel phone:

Instructions. On your Pixel device, access the “Settings” app. Within Settings, scroll down to tap the “System” option. On the following screen, hit the “System update” option to check if any latest update is available. Here, if you see any updates, download and install them promptly. Before initiating the update, ensure your device is connected to a stable Wi-Fi network with sufficient battery charge.

4. Dirty Phone or Sensor

Problem

Accumulated dirt, dust, or residue on the phone or fingerprint sensor can cause obstruction. This can lead to the failure to properly recognize your fingerprint.

Solution

1. Cleaning the Phone

Employ a gentle, dry microfiber cloth for wiping down the complete surface of your Pixel device. Take particular care to thoroughly clean the region surrounding the fingerprint sensor. Refrain from utilizing rough substances or strong chemicals as they could potentially cause harm to the Realme C55 device.

2. Fingerprint Sensor Cleaning

Gently wipe the fingerprint sensor area using a clean, dry cloth to ensure thorough cleaning. For better results, consider using a dampened cotton swab with water or isopropyl alcohol. Before using it again, ensure the sensor is entirely dry.

3. Compressed Air or Soft Brush

Use compressed air or a soft brush if there’s visible debris or particles around the sensor. Be cautious not to apply excessive pressure that might damage the sensor.

5. Screen Protector: Dirty or Damaged

Problem

A smudged or impaired screen protector might disrupt the working of the fingerprint sensor. This can potentially cause it to fail to recognize your fingerprint.

Solution

1. Clean the Screen Protector

Start by effectively cleaning the screen protector on your Pixel device. For a thorough cleaning, consider utilizing a screen cleaning solution. Ensure that the screen protector is free from any dirt or debris.

2. Replace Damaged Protectors

Is the screen protector visibly damaged, scratched, or peeling off? If yes, consider replacing it with a new one. Damaged protectors can hinder fingerprint recognition and compromise device protection.

3. Check Compatibility

Ensure the screen protector is designed to be compatible with fingerprint sensors. Some protectors may obstruct or interfere with the sensor’s functionality.

4. Remove Air Bubbles

There can be air bubbles trapped under the screen protector. If there are, gently press them out towards the edges using a card designed for this purpose.

6. Clean Your Finger

Problem

The problem may lie with your fingers rather than the Realme C55 device. Unclean or moist fingers can hinder accurate fingerprint recognition on the sensor, causing the Realme C55 fingerprint sensor to not work.

Solution

1. Cleanse and Dry Your Hands

Remove any dirt, oil, or moisture that might cause issues with the fingerprint sensor. It’s crucial to wash and thoroughly dry your hands. Additionally, verify that your fingers are entirely dry before engaging the sensor. The reason is any moisture or dampness may cause inaccuracies in fingerprint identification.

2. Avoid Oily or Greasy Substances

Refrain from touching oily or greasy surfaces before using the fingerprint sensor. These substances can transfer onto your fingers, affecting sensor accuracy. If your fingers are dirty or damp, pause to clean them using a dry, clean cloth.

7. Covering Screen if Fingerprint on Screen

Problem

Fingerprint marks or smudges on the screen might disrupt sensor functionality. This leads to inaccurate recognition when you try to unlock your device.

Solution

1. Avoid Covering the Sensor Area

Be cautious while cleaning the screen to avoid covering or smudging the area around the fingerprint sensor. Precise cleaning around this area prevents interference with sensor functionality.

2. Use Proper Holding Technique

While holding the Realme C55 device, avoid placing your fingers or palms over the fingerprint sensor. Opt for holding the Realme C55 device to minimize accidental contact with the sensor area.

8. Fingerprint Sensor Not Visible

Problem

Misconfigured settings on your Pixel device can lead to situations where the fingerprint sensor is not visible. It can lead to scenarios where the Realme C55 device fails to recognize your screen unlocking attempt.

Solution: Adjust the Setting To Consistently Display the Sensor

You must adjust the display settings to ensure the fingerprint sensor is always visible. To do that, you can begin by opening the Settings app. Navigate to the “Display” tab and select “Lock Screen.” On the following window, toggle on “Always show time and info.”

9. Low Touch Sensitivity

Problem

The fingerprint sensor may have low touch sensitivity . It can lead to difficulties in accurately recognizing fingerprints, leading to Realme C55 fingerprint not working.

Solution

1. Adjust Sensitivity Settings

Accessories like a screen protector might impact the performance of your Pixel device’s touch sensitivity. When using a screen protector, your Pixel enhances touch sensitivity. To do that, navigate to the Settings app and open it. Move to the “Display” window and scroll down to the last option. Toggle on the “Screen protector mode” to increase the screen sensitivity.

2. Finger Re-Enrollment

Delete existing fingerprints and re-register them. This re-enrollment can sometimes improve sensitivity and help remove the issues. Here is how you can delete and re-enroll your fingerprint:

• Step 1. In the Settings app of your Pixel, tap “Security & Privacy.” Then, press “Device Unlock” and choose “Fingerprint Unlock.” The device will now ask you to provide your device PIN or password.

• Step 2. Tap “Fingerprint Unlock” on the following screen and delete the previously enrolled fingerprints. Then, press “Add fingerprint” and follow the on-screen prompts to complete the process.

10. Other Hardware Issues

Problem

Persistent fingerprint sensor problems might indicate underlying hardware issues . This could go beyond common troubleshooting and might require professional help.

Solution

1. Inspect for Physical Damage

Thoroughly examine your Pixel device for any physical damage. These include cracks, dents, or scratches around the fingerprint sensor area. Physical damage could affect the sensor’s functionality.

2. Safe Mode Check

Boot the Realme C55 device in safe mode to determine if third-party apps are causing conflicts. To do that, press the “Power” key with any volume key to access the power menu. Afterward, long-press the “Power Off” option until the “Reboot to Safe Mode” option appears on your device’s screen. Press “OK” to reboot into Safe Mode and test the fingerprint sensor’s functionality.

3. Professional Assessment

If you suspect hardware issues, seek professional help from authorized service centers. A clear sign of hardware issues can be visible damage or the sensor failing to function even in safe mode.

11. Factory Reset as Last Resort

Problem

Did all other troubleshooting methods fail to resolve persistent fingerprint sensor issues? Then, a factory reset might be required to revert the Realme C55 device to its original settings.

Solution

1. Backup Data

Before initiating a factory reset, ensure that all crucial data is safeguarded. This encompasses contacts, photos, documents, and any other significant files. Use Google’s backup services or third-party apps to securely back up your data .

2. Initiating Factory Reset

Proceed with the following steps to execute a factory reset on your Pixel device:

• Step 1. On your Pixel smartphone, navigate to Settings and access the “System” tab. Here, scroll down to the bottom and tap “Reset Options.”

• Step 2. In “Reset Options,” choose “Erase All Data (Factory Reset)” to continue. Afterward, select “Erase All Data” on the next screen and follow the instructions to complete the process.

In summary, this article detailed various methods to fix the Realme C55 fingerprint not working. Diverse approaches were explored, from simple steps like sensor cleaning to advanced solutions like factory resets. However, Dr.Fone stands out among these solutions as a top-tier option. It offers a secure and efficient resolution to the persistent problem of fingerprint failure on the Realme C55 .