How to Fix Android App Not Installed Error on Vivo Y78+ Quickly?

App not installed on Android is no more an unknown Error Code during Application installation as many people experience it on a day-to-day basis. An “Application not installed” error message usually pops up when you are trying to download and install an App with a .apk file extension from somewhere other than the Google Play Store. The error is very confusing at first but makes sense when you realize that this unknown Error Code during Application installation is neither a software issue nor a hardware problem. It is a direct outcome of what you do with your device. Yes, you heard that right. Your faulty actions can cause Android App not installed error.

What to do when trying to install the Android APK it says “app not installed”? It is terrible that you can’t install App on your device. But in this article, you will know more about the causes behind this error and the best ways to fix it, read on, here is all you need to know.

Part 1: Common reasons for the “Android App not installed” error

You may ask: Why can’t I download apps on my Vivo Y78+? Understanding the underlying causes of the “Android App Not Installed” error is crucial for resolving the issue effectively. So, what are the reasons for Android App not installed error? Given below are a few reasons:

1. Insufficient storage

Android software and if data such as photos, videos, music, messages, apps, contacts, emails, etc are stored in the internal memory there is not adequate storage left for another App, leading to Android App not installed error.

2. Corrupted/Contaminated App file

When you do not download Apps from the Play Store and choose another platform to do so, App files are usually corrupted and hence cannot be installed on your device smoothly. You should be doubly sure of the source from where you download an App, check its extension name, and make an effort not to install contained files.

3. SD Card not mounted in the Vivo Y78+ device

At times your phone could be connected to your PC or another electronic device that can access the SD Card from your device. In such situations when you install an App and choose to save it to your SD Card, you will see Android App not installed error because the App cannot find the SD card as it is not mounted in your device.

4. Storage location

You must be aware that certain Apps work their best when stored in the Vivo Y78+ device’s internal memory, whereas others need to be located on an SD Card. If you do not save the App in an appropriate location, you will find that the App isn’t installed because of an unknown Error Code.

5. Corrupt storage

Corrupted storage, especially a corrupted SD Card, is known to cause the Android App isn’t installed error. Even the internal storage can get clogged due to unnecessary and unwanted data, some of which might contain an element that disturbs the storage location. Take this issue seriously as a corrupted SD Card and even clogged up internal memory can put your device in danger.

6. Application Permission

Software operations running in the background and App Permission are not new concepts. Such errors can also cause the Unknown Error Code during App installation.

7. Incorrect file

If you already have an App installed but download another variant of it having a distinct signed or unsigned certificate can also make the Android App not installed error pop-up. This sounds technical, but this and all the other reasons listed above can be tackled by you.

The Unknown Error Code during Application installation can occur due to any one or more of the reasons stated above. So read them carefully and understand them well to avoid such glitches in the future.

Part 2: One-click to fix App not installed on Android error

So App not installed on your Vivo Y78+ or tablet? The most horrible part is that this issue may come out of the corruption in the system files. In this situation, Android apps won’t be installed no matter what measures you take. Android system repair is the only effective solution to deal with this issue.

Android system repair used to require high technical skills. But most of the users know little about technical things. Well, worry not! Dr.Fone - System Repair (Android) allows you to repair Android easily, that is, complete the fix with just one click.

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Note: Getting your Android system repaired may erase the existing device data. It is recommended that you should back up your Android data before starting the Android repair.

The following steps illustrate how to fix the “Android App not installed” error in one click:

Install Dr.Fone on your Windows. After that, launch it, and click “System Repair”. Connect your Android to the computer.

Select the “Android” option and click “Start”.

Select device information, such as brand, name, model, country, etc., from each field, and type “Next”.

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Follow the on-screen instructions to boot your Android in download mode, and allow the tool to download the firmware to your device.

After the firmware is downloaded, the tool will start to repair your Android, hereby fixing the “Android App not installed” error.

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Part 3: How to fix App not installed error on Android

We understand that it can be a tricky situation to be in when Android App not installed error pops up, but what if we tell you can get rid of it in easy and simple steps? Yes, there is!

#1. Delete unnecessary files/Apps

Insufficient storage can prevent the app from being installed. Make some storage space on your device by cleaning unwanted data and deleting extra media and other files. You can also get rid of heavy Apps by:

Visiting “Settings” on your device. Then select “Manage apps”, “Application Manager” or “Apps” (varies based on device model or version) from the list of options before you.

Now select the App you wish to uninstall and wait for the App Info screen to open, then click on “Uninstall” as shown in the screenshot.

You can also uninstall the unnecessary application on the home screen, just long-press the app you want to uninstall until you see the “uninstall” icon. Click “Uninstall”, then, you need to click “OK” to confirm the uninstall process.

#2. Use only Google Play Store

As you are all aware, the Play Store is specially designed for Android software and contains only trusted and safe Apps. It is often known as the “Android Market” because it is loaded with different types of Apps to stiffly all your needs so that you don’t have to rely on other third-party sources to purchase/install Apps.

#3. Mount your SD Card

Another remedy for Android App not installed error is to make sure that the SD card inserted in your device is not inaccessible.

To check the same:

First, disconnect your Vivo Y78+ from your PC and then visit “Settings” on your Android and select “Storage” from the options that appear. Finally, click on “Mount SD Card” at the Storage Info screen.

You can now restart your device and try to install the app now, it should work!

#4. Choose App location wisely

It is advisable to not tamper with the App’s location and let the software decide where it needs to be placed. As far as possible, let the Apps be in your device’s internal memory.

#5. Format SD Card

The chances of your SD Card being corrupted are very high. You can format it either while it is in your device or externally.

Now to Clean up your SD Card, simply visit “Settings” and select “Storage” and tap on “Format SD Card” and mount it once again to use it smoothly.

#6. App Permissions

You can reset App permissions to combat the Android App not installed error by Visiting “Settings” and then selecting “Apps”. Now access the Apps menu and hit “Reset App Preferences” or “Reset application permissions”. This will allow third-party apps to get installed on your device.

#7. Choose the correct App file

Make sure to always download an App file only from a trusted and safe source to avoid any errors during installation.

#8. Reboot your device

Finally, if nothing else works, restart your device to end all operations which could be causing the said error. To reboot, just press the power button till you see a pop-up. Select “Restart” and wait for your device to reboot.

Conclusion

Encountering the “App Not Installed” error on Android can be frustrating, but by understanding the causes and implementing the appropriate solutions, you can overcome this issue. We saw that Android App not installed error can be fixed quickly if you keep in mind the tips given in this article. However, please ensure that you follow each instruction carefully to avoid any further goof up.

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Android Safe Mode - How to Turn off Safe Mode on Vivo Y78+?

Safe mode on Android is very useful to get rid of dangerous apps and malware. This allows the user to perform a uninstall of the crashed or malicious apps by putting safe mode on Android. Now the question is how to remove safe mode? In this article, we have discussed in detail how to get out of safe mode and also discussed some frequently asked questions. Keep reading this article.

Part 1: How to turn off safe mode on Android?

This is very important to turn off the safe mode after you put the safe mode on Android. Your mobile performance is limited in this mode. So you have to turn off safe mode. For doing this, there are some methods. Try to apply them one by one. If you succeed, stop there. Else go to the next method.

Method 1: Restarting the Vivo Y78+ device

This is the easiest method to turn off the safe mode in Android. To use this method, follow the steps below.

Step 1 – Tap and hold the power button of your Vivo Y78+.

Step 2 – You could find the option “Restart”. Tap on it. (If you have only one option, move to the step no 2)

Step 3 – Now, your phone will boot up in some time and you can see the Vivo Y78+ device is no more on safe mode.

This method, if goes well, will turn off safe mode in Android from your device. IF not, move to the next method instead.

Method 2: Do a soft reset:

The soft reset is very easy to perform. It won’t delete any of your personal files etc. Besides, it clears all the temp files and unnecessary data and recent apps so that you get a healthy device. This method is very good for turning off Safe mode on Android.

Step 1 – Tap and hold the power button.

Step 2 – Now, select “Power off” from the given option. This will make your device off.

Step 3 – Wait a few seconds and then turn it on again.

This time you can see your phone is no more in safe mode. Also, your junk files have been also removed. If you still find the Vivo Y78+ device is the safe mode, follow the next method.

Method 3: Break all power

This method is sometimes very helpful to turn off safe mode on android by disconnecting all the power as well as resetting the SIM card.

Step 1 – Take the back cover off from the Vivo Y78+ device and remove the battery. (Not all devices will give you this facility)

Step 2 – Take out the SIM card.

Step 3 – Reinsert the SIM card and insert the battery again.

Step 4 – Turn the Vivo Y78+ device on by tapping and holding the power button.

Now, you can see your device is out of safe mode. If you still find your device in Safe mode, see the next method.

Method 4: Wipe the cache of the Vivo Y78+ device.

The cache of the Vivo Y78+ device sometimes creates an obstacle in overcoming the safe mode on Android. To solve this issue, follow the steps below.

Step 1 – Turn on your device in safe mode. It can generally be done by tapping the home, power, and volume up button on Android device. If this combination is not working for you, search the internet with your device model number.

Step 2 – Now you can find the recovery mode screen. Navigate to the “Wipe cache” option with the volume up and down button and select the option by tapping the power button.

Step 3 – Now follow on-screen instruction and your device will be rebooted.

After successful completion of this method, your device should no longer be in safe mode. If the problem still persists, the only solution is to do a factory reset. This will erase all the data from your device. So take backup of your internal storage.

Method 5: Factory data reset

To factory data reset, you have to follow the below steps.

Step 1 – Enter in the recovery mode by following the steps mentioned earlier.

Step 2 – Now select “Factory data reset” from the given options.

Step 3 – Now, follow the on-screen instructions and your device will be factory reset.

After this method, you can successfully get rid of the safe mode on Android. Restore your data from the backup you created.

Watch the video below to turn off safe mode on your phone:

Part 2: How to put the phone in safe mode?

If some apps or programs create a problem on your device, the solution is safe mode. Safe mode allows you to uninstall the app or the program out of your device safely. So, safe mode on Android is quite useful sometimes. Let’s have a look at how to turn on safe mode in Android.

Before this, remember to take a backup of your Vivo Y78+. We recommend you to use the Dr.Fone - Phone Backup (Android). This tool is the best in its class to provide users with a very easy-to-use user interface yet powerful solution.

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Always remember to use this tool before you enter in the safe mode as you never know what will happen next and you might end up with factory resetting. This, as the result, will erase all your valuable data. So always perform backup data before you proceed.

To enter the safe mode, follow the instructions below.

Step 1 – First of all, long press the power button and let the Power options appear.

Step 2 – Now, long press on the “Power off” option. This will instantly ask you if you want to reboot into safe mode. Select the option and your device will reboot in safe mode.

If you are using Android version 4.2 or earlier, turn off the Vivo Y78+ device and turn it on the back by tapping the power button. When the logo appears, tap and hold the volume down button. This will allow the Vivo Y78+ device to boot in safe mode.

Follow these steps carefully and now you can see a “Safe Mode” written at the corner of your device. This will confirm that you have successfully entered in Safe mode on Android.

Part 3: Safe mode on Android FAQs

In this section, we’ll discuss some frequently asked questions about the safe mode. Some users have many questions regarding the safe mode. Here we’ll try to cover some of them.

1. Why is My Vivo Y78+ on safe mode?

This is a very common question around the world. For many Android device users, it’s quite common to see your phone in safe mode suddenly. Android is a secure platform and if your device sees any threat from your recently installed apps or any programs that want to harm your device; it would go into safe mode automatically. Sometimes, you might accidentally perform the steps discussed in part 2 and boot your device in safe mode.

2. Safe mode won’t turn off on My Vivo Y78+

For the solution to remove safe mode from your device you must follow the step-by-step methods as mentioned in part 1. This will surely take your device out of the safe mode.

The safe mode is a very useful program for any Android device. But it limits the programs of Android and you must remove safe mode after uninstalling the harmful app. This article showed you how to turn off safe mode easily.

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4 Ways to Fix Android Blue Screen of Death On Vivo Y78+

Android is undoubtedly amongst the best smartphone platforms but comes with its own share of glitches. The Android screen of death is observed by many users all over the world who complain of their device screen turning blue rendering their phone/tablet unresponsive. This is called the Android blue screen of death and it usually occurs when you turn on your device by pressing the Power On button but your device does not boot up normally and remains stuck at a plain blue screen without any error message.

Such an Android screen of death is caused by a temporary software crash but can also occur due to certain hardware issues. We understand the inconvenience caused to you when you see the Android blue screen of death. Here are ways to fix the error and great software to extract all your data to keep it unaltered and safe.

Read on to learn more about the Android screen of death and ways to combat it.

Part 1: How to rescue data on Vivo Y78+ with blue screen of death?

The Android blue screen of death issue is not a difficult problem to deal with and can be fixed by you by following the easy steps given in this article. We suggest that all readers rescue the data stored on their Android devices to prevent data loss and keep it stored in your PC from where it can be accessed and recovered by you anytime, anywhere. This task might sound tedious, but, we have for you Dr.Fone - Data Recovery (Android) , a software specially designed to retrieve data from broken and damaged Vivo Y78+ phones and tabs, especially Vivo Y78+ devices, and keep it safe in your PC without tampering with it or altering its format. It efficiently extracts data from broken or unresponsive Vivo Y78+ devices, phones/tabs stuck at black/blue screen, or whose system crashed due to a virus attack.

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Follow the steps given below to extract data when you experience an Android screen of death:

1. Download, install, and run the Dr.Fone - Data Recovery (Android) tool on your PC. Connect your device using a USB cable and move on to the main screen of the software.

2. Once you launch the software, you will see many tabs before you. Click on “Data Recovery” > “Android”.

3. And then choose “Recover from Broken Phone” from the program’s screen.

4. In this step, choose from the two options before you the true nature of your device as shown in the screenshot below.

5. You will now be asked to feed in your phone’s model type and name as shown in the screenshot below. Give correct details for the software to identify your device smoothly and hit “Next”.

6. In this step, refer to the instructions in your device manual to enter into Download Mode on your Vivo Y78+ and hit “Next”. An example of what to do to reach Download Mode is shown below.

7. Finally, let the software recognize your Vivo Y78+, and start to download the recovery package for your device.

8. Once it does, you will be able to preview all the files on the screen in front of you before you hit “Recover to Computer”.

The process may take up to a few minutes and once it’s done all your files will be extracted and stored on your PC. You can now move on to troubleshooting the problem without the fear of losing all your important data.

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Part 2: One click to fix the Android blue screen of death

We understand how annoying it is to see the Android blue screen of death and fail to access your device data. But, with Dr.Fone - System Repair (Android) , your troubles would burst away.

This software effectively fixes Android screen of death issue along with app crashing, bricked or unresponsive device, stuck on Vivo Y78+ logo, etc. All Android issues are well taken care of by Dr.Fone - System Repair (Android) with one click.

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Note: Backing up your device is significant before you carry out the Android repair process. The process of fixing the Android blue screen of death issue may erase data from your Vivo Y78+. So backing up your Android seems a viable option.

Phase 1: Connecting your Android after preparing it

Step 1: Installation and running Dr.Fone - System Repair (Android) on your system takes you to the main screen. Choose the ‘System Repair’ option followed by connecting the Android device.

Step 2: Press the ‘Android Repair’ option before tapping the ‘Start’ button.

Step 3: Over the Vivo Y78+ device information window, select all relevant data about your device followed by the ‘Next’ button.

Phase 2: Initiate repairing after entering ‘Download’ mode

Step 1: Get the Vivo Y78+ device in ‘Download’ mode to fix the Android blue screen of death issue. Here is how –

On a ‘Home’ button-less device – you need to switch off the Vivo Y78+ device. Now, hold the ‘Volume Down’, ‘Power’, and ‘Bixby’ keys together for about 10 seconds and release. Hit the ‘Volume Up’ key to get into ‘Download’ mode.

On a ‘Home’ button device – shut down the Android phone/tablet, and then push the ‘Power’, ‘Volume Down’, and ‘Home’ keys for 10 seconds. Let go of the keys and press the ‘Volume Up’ key to enter ‘Download’ mode.

Step 2: Tap the ‘Next’ button to download firmware.

Step 3: Dr.Fone - System Repair (Android) would verify the firmware post-download. It will start repairing the Android system automatically.

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Part 3: Force Restart Your Vivo Y78+

A force restart is a basic step that can clear minor software glitches. It has the potential to resolve the Android blue screen of death issue. Force restarting your device can clear temporary bugs and reset all processes. It is a simple yet often overlooked way to fix the Android blue screen of death issue. Use the following steps to force restart your Vivo Y78+:

Step: On your Vivo Y78+, press and hold the “Power” and “Volume Down” keys for around 10 seconds. Release the keys when your device reboots and wait for it to complete rebooting.

## Part 4: Remove phone battery to fix blue screen of death

The best home remedy to fix any kind of Android screen of death remove the Vivo Y78+ device’s battery. This technique might sound too simple, but it has solved the Android blue screen of death issue for many users whose devices started normally after reinserting the battery. Here is what you should do.

1. Open the back cover of your Vivo Y78+ and carefully remove its battery.

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2. Let the battery be out for 5-7 minutes. Meanwhile, long press the power button to drain out any residual charge from your device.

3. Now reinsert the battery and attach the back cover.

4. Turn on your device and see that it boots normally all the way to the Home/Locked Screen without getting stuck at Android blue screen of death.

Note: Not all Android devices allow you to remove their battery. If you own such a device, try the next step as it is your only option to fix the Android blue screen of death problem.

Part 5: Put out your SIM Card/SD card and reinsert

In some cases, issues related to the Android blue screen of death can be caused by problems with the SIM card or SD card. Removing and reinserting these cards can help resolve potential conflicts or glitches. Remember that this method can help resolve issues related to SIM card or SD card conflicts. However, it may not address more complex software or hardware problems causing the blue screen issue.

Part 6: Clean or change the LCD connector

If you’re facing the Android blue screen of death issue, the issue might be related to a hardware problem. The problem can be a loose or damaged LCD connector. In this scenario, you can try cleaning or changing the connector. This method is more advanced and involves disassembling your device. That’s why you need to proceed with caution and only if you’re comfortable with hardware tasks.

Part 7: Update to the latest Android version

Software problems can manifest the Android equivalent of a blue screen of death. It is usually triggered by errors or anomalies within the operating system. To address these concerns, upgrading to the most recent version of the Android OS proves effective. However, updating your device’s software could introduce fresh glitches or compatibility conflicts. These steps outline the process of updating your device to the latest OS:

Step: Open the Settings app on your Vivo Y78+ by locating and launching it. Proceed by scrolling through the options and selecting “Software Update.” In the ensuing screen, choose “Download and Install” to start a search for any available updates.

Part 8: How to fix the Android blue screen of death by factory reset?

The Android screen of death is a very confusing issue as it freezes your device at a blue screen with no options to navigate further. In such a situation you may consider performing a Factory Reset, better known as Hard Reset as you will need to enter Recovery Mode to implement this technique. Although resting your device will wipe off all its data but you don’t need to worry as Dr.Fone toolkit Android Data Extraction software can retrieve all your files and keep them safe.

Accessing Recovery Mode differs for different Android devices. Thus, we suggest that you consult your device manual to understand how to boot into Recovery Mode on your particular Android device and then follow the steps given below:

Once you are on the Recovery Screen, you will see a list of options before you, similar to the screenshot below.

Use the Volume Down button to scroll downwards and reach the “Wipe data/Factory reset” option.

Now use the power button to select it and wait for the Vivo Y78+ device to reboot automatically.

You will notice that the Android device will turn back on without getting stuck at the Android blue screen of death. Now you can set up your device from scratch.

Part 9: What Should You Do if Android Still Stuck on Blue Screen?

Have you tried all the methods, and your Vivo Y78+ is still stuck on the blue screen of death? In this case, it’s important to consider the possibility of a hardware issue. Remember that hardware issues can be complex. Trying to fix things without the right expertise can result in additional harm. If you’re uncertain about the next steps, it’s wisest to ask for assistance from a trained professional.

The Android screen of death, especially the Android blue screen of death, is not a very pleasant sight and could worry you. The good news is that this problem can be fixed by you sitting at home without any technical assistance. Follow the simple and easy tips given above to reboot your device and use the Dr.Fone - Data Recovery (Damaged Device) tool to rescue your data in the most efficient and effective way, then use Dr.Fone - System Repair (Android) to repair your Vivo Y78+.

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