How to Fix Android App Not Installed Error on OnePlus Ace 2 Pro 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.

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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 OnePlus Ace 2 Pro? 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 OnePlus Ace 2 Pro 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 OnePlus Ace 2 Pro 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 OnePlus Ace 2 Pro 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.

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

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

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

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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.

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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.

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#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 OnePlus Ace 2 Pro 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!

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#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.

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#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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How to Fix Unfortunately, Contacts Has Stopped Error on OnePlus Ace 2 Pro

Have you recently noticed a message stating “Contacts has stopped”? This is enough to take away all your peace. As, our native contacts app stashes all our useful contacts which are time and again needed by a user. It’s malfunctioning is enough to give us chills. But, why the OnePlus Ace 2 Pro or any other Android device incurs such problems?

It can occur while you launch the app or while you’re in the app already finding the required contact or when any other application is trying to gain access to it. So, to rage a battle with this issue, you need to seek help of some powerful methods in killing down the issue of contacts app crashes. And, the best part is that you’ve secured yourself by reaching the right place. We will be taking an in-depth discussion on several methods that may prove to be helpful. Let’s read them up here now.

Part 1: Get Android system fixed in one click

We’re always in search of a method that provides handy solution in a quite speedy and hassle-free manner. There are hundreds of tips and tricks for the same. You never know the possibility of firmware being the major drawback. No amount of manual methods can beat the performance of Dr.Fone - System Repair (Android).It is capable of providing 100% solution to any kind of issues, your phone gets troubled with. It is designed with the technology of combating the problem of black screen of death, app crashes and several other issues. In just a single-click, ward off the issue and free your device with errors

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Incorporates with 1-click technology to resolve any issues occurring in your OnePlus Ace 2 Pro. Black screen of death, app crash, system crash, faulty issues etc.
fone – Repair (Android) interface is extremely simple for users and lays functionalities aptly.
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In this tutorial, we will learn the methodology of addressing the contacts keep stopping problem and gain triumph over it.

Step 1: Load program and draw connection of device

Download Dr.Fone - System Repair (Android) on PC. While program installs, use USB cable to connect device with system. From interface, tap on “System Repair” main window.

Step 2: Opt for Android Repair option

You’ll be directed to the “System Repair” screen where you have to opt for “Android Repair” options appearing over the left panel of the program. After that, do not forget to press “Start”.

Step 3: Key in device information

From following screen, fill the fields of “Brand”, “Name”, “Model”, “Country” and several other parameters. Then, tap on “Next” option to proceed further.

Step 4: Download Firmware package

Just follow the on-screen steps for booting your OnePlus Ace 2 Pro into download mode. Then, hit the “Next” button to proceed with downloading the most suitable firmware package for your OnePlus Ace 2 Pro.

Step 5: Repair Android phone

Once the software downloads, the program will automatically repair any issues irking over your phone. Now, your phone is all free from contacts error.

Part 2: 9 Common ways to fix “Unfortunately, Contacts Has Stopped”

2.1 Restart Android system

Our response to any minuscule issue is straightaway restarting phone. This helps in clearing out any problem that might have disrupt the functioning of phone. So, to fix the problem of “Contacts app won’t open”, you too can try out your hand in this method.

Get hold of your Android system and long press the power button.
This will fadeout the main screen and showcase several options from where you’ve to tap on “Reboot/Restart” mode.

Now, your device will quickly reboot the OnePlus Ace 2 Pro device. Once, the OnePlus Ace 2 Pro device regains its normal state, check whether the issue is coming again or not.

2.2 Clear cache and data of Contacts app

The cache memory basically stashes the copies of the concerned application. It is indeed a streak of copies of the desired app storing information and incurring additional space on the storage. This might be the reason why the contact app crashes rapidly on your OnePlus Ace 2 Pro. Hence, it can prove to be a good remedy for this problem. Just follow down the steps mentioned below-

First of all, go to “Settings” application from the app drawer or from the notification panel.
Now, surf and select for “Applications” or “Apps & notifications”.
Here, you need to browse for “Contacts” app and open it.
On “Contacts” app, just tap on “CLEAR CACHE” and “CLEAR DATA” button. This will prompt the cache memory to be cleared.

2.3 Wipe cache partition

As we know the cache memories are the temporary files build by the firmware. These are of little importance as they are bound to become a bit more corrupted in nature. And sometimes, may indirectly become a hurdle for the working of contacts app. It is good if the OnePlus Ace 2 Pro device is cleared off from the caches. Instead of manually wiping down the cache memory, we will understand how to clear off the cache partition in the following steps.

From device, just power off your device. Then, press the “Volume Down + Power” button with “Home” combinations together.
In a moment’s time, lose fingers from the “Power” button but do not release fingers from “Volume Down” and “Home” buttons.
Once you view the “Android System Recovery” screen, just lose the “Volume Down” and “Home” buttons.
Over the options available, just opt for “wipe cache partition” by tapping the “Volume down” button until the desired option is highlighted.
Finally, push the “Power” key to give consent to the selection.

After, the process is through there will be an option for “Reboot System Now”. Tap on it and restart the OnePlus Ace 2 Pro device.

2.4 Disable Google+ app

The root cause for detecting any problem is not very easy. You never know the overloading of Google + application might have directly impacted contacts app crashes. To resolve it, disabling it may prove to be a helpful solution. Here is the quick reference for disabling Google+ application.

First of all, visit “Settings” from your OnePlus Ace 2 Pro.
In “Settings”, visit the “Application Manager” or “Applications” menu and browse for “Google +” app.
From the application main page, you can choose to do either of the methods:

Either, completely disable the application to work by pressing on “Force stop” or “Disable” feature.
Or, brush away the unnecessary cache piled up on your storage by using “Clear Cache” functionality.

There will be a prompt stating that the application may misbehave. However, you must disable the feature and check whether it worked out for you or not.

2.5 Update your device software

Many a times, we skip updating our device software thinking it is of less importance. In fact, one must not miss out the updates that occurs in phone. As, without the updates, the scope of some applications are affected to some extent. For its better functioning and avoiding issues like “contacts keep stopping”, here is how you should update device software.

First and foremost, head on to “Settings” menu. Over there, click on “About Device”.
There, you need to tap over “Software Update”.

The device will now check whether there are any updates available for your device. If yes, then update application right away.

2.6 Reset App Preferences

As stated, the malfunctioning of contacts can be due to be any unexpected reason. Hence, users can opt for resetting app preferences. This may prove to be helpful in brushing away the issue of “Contacts app won’t open”.

Launch “Settings” app and surf for “Apps” or “Applications” option on your OnePlus Ace 2 Pro.
Just, tap over the three dots appearing at the upper right section and then tap on “Reset app preferences”.
At last, just select “Reset default apps”.

2.7 Delete voicemail

Do you happen to exchange voicemails quite often? It can trigger to be the reason for contact app crashes. If your device happens to have a bulk of voicemails, you must get rid of them sooner or later. As, these might standout to be the prime reason for contacts stopping on OnePlus Ace 2 Pro. If you’re unaware about the procedure of removing all kinds of voicemails, you can proceed to make use of the following steps.

Start with, launching the “Google Voice” app.
From there, duly opt for “Voicemail”.
Just click on the press menu option and at last select “Delete” option.

2.8 Uninstall the downloaded apps

Some applications contain some unwanted advertisements and some elements of malware. This can be enough for disrupting the functionality of the built-in contact app won’t open. It is crucial for your phone to be detoxed from such elements. You need to manually scrap off such applications. Do, ensure to download the application from the genuine source for future use.

On your OnePlus Ace 2 Pro, just go to “Home” screen and tap on “Apps” icon.
Then, tap on “Settings” icon followed by going to “Applications” or “Apps & Preferences” menu.
After that, tap on “Menu icon” which will showcase the apps installed on device.
Simply, open the app and hit the “Uninstall” button to brush away that app. Repeat the same with other application(s).

Now, check whether you’ve fought the battle with the problem or not.

2.9 Reset to Factory Settings

Last but not least, if all the methods falls flat to resolve the issue of contacts app won’t open. Then, it might be your device has some internal problem. This can be any software crash which might not be fixing with the aforementioned steps. That is where reset to factory settings may prove to be a good option. With this method, your phone will be cleared of all the components, settings and everything present in it. Here are is the comprehensive tutorial for biding bye to the problem of contacts app won’t open.

Note: Do ensure to take a backup of all the data available in your device. As, we don’t want you to regret afterwards.

Just go to “Settings” and surf and select “Backup & Reset” option.
You need to toggle on the option for performing the backup on your Google account.
Then, tap on “Reset” button and then tick mark the option for resetting your phone.

Home Button Not Working on OnePlus Ace 2 Pro? Here Are Real Fixes

There is no doubt that it is quite frustrating when your device buttons, such as home and back don’t work properly. The reasons can be software as well as hardware issues. If you are wondering whether there is any solution to fix this problem, then you’ve come to the right place. Firstly, yes some methods can probably help you to come out of this issue. Here, in this guide, we have covered various solutions you can try to resolve the “home button not working Android” problem no matter whether it is due to software or hardware reason.

Part 1: 4 Common Measures to Fix Home Button Not Working Android

Here, we are going to mention four common methods that you can try to resolve the home button problem on your OnePlus Ace 2 Pro with ease.

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1.1 One click to fix Android Home Button Not Working

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When it comes to the home button not working OnePlus Ace 2 Pro problem, the most common reason is the unknown system issues. In such a scenario, the best solution is using Dr.Fone - System Repair (Android) software to repair your Android system to normal in one click. This tool is powerful enough to resolve various Android issues within a few minutes.

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It is compatible with all OnePlus Ace 2 Pro devices.
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To learn how to fix home button not working problem, download and install the Dr.Fone - System Repair (Android) software on your computer, follow the below step-by-step guide:

Step 1: To begin with the process, launch the software on your computer and select the “System Repair” option from the software main window.

Step 2: Thereafter, connect your OnePlus Ace 2 Pro to the computer using a USB cable and select the “Android Repair” tab from the left menu.

Step 3: Next, you will navigate to a device information page where you have to provide your device information.

Step 4: After that, the software will download the appropriate firmware to repair your Android system.

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Step 5: After downloading the firmware, the software will start the repair process. Wait for a few seconds, the problem should get fixed and your phone will get back to its normal state.

1.2 Force Restart your Android

Whenever you encounter with Android virtual soft keys, not working problem, the first thing you should try is to force restart your phone . If the problem is due to a software issue, then it can be probably fixed by simply force restarting your Android.

Here are simple steps on how to force restart on Android:

Step 1: To begin with, press and hold the power button and either volume up or down button at the same time until your device screen goes off.

Step 2: Next, press the power button for a few moments to force restart your device.

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1.3 Restore Factory Settings

If force restarting won’t help you to fix the problem you are facing, it’s time to reset your OnePlus Ace 2 Pro to factory settings. The factory reset on an Android device will erase all of your phone settings, third-party apps, user data, and other app data to restore your device to its original manufacturer condition or settings. It means that this can bring back your device to its normal state.

To learn how to restore factory settings, follow the below steps:

Step 1: Go to your ‘Settings” and then, go to “System”>” Advanced”>” Reset options”.

Step 2: Next, tap on “Erase all data”>” Reset phone” to factory reset on your phone. Here, you may need to enter the password or pin or pattern.

Once you are done with the above steps, restart your phone and restore your data and this might be fixed the problem for you. If not, then try the next solution.

1.4 Update Android Firmware

It might be the case that your Android firmware is not updated and that’s why you are experiencing the home button not working Android problem. Sometimes, not updating your Android firmware can cause various issues and problems while using your device. So, you should update it, and here are steps on how to do it:

Step 1: Open the Settings and then, go to “About device”. Next, click “System updates”.

Step 2: After that, click “Check for updates” and if updates are available, then download and install it to update your Android version.

Part 2: What if the Home Button fails due to hardware reasons?

When your Android home and back button not working because of hardware reasons, you can’t get the problem resolved by simply rebooting your device. In such cases, you have to use alternative apps to replace the home button.

2.1 Simple Control app

The Simple Control app is the first and foremost solution to fix the Android home button not working issue. With the help of this app, you can fix many soft keys of your device. It is specially designed for Android users facing trouble using home, volume, back, and camera buttons. Plus, the app utilizes Accessibility service, but it doesn’t get access to your sensitive and personal information.

Pros:

It can easily replace broken and failed buttons.
The app is quite easy to use.

Cons:

It is not as much efficient as other similar apps available out there.

URL: https://play.google.com/store/apps/details?id=ace.jun.simplecontrol&hl=en_US

2.2 Button Savior app

Button Savior app is one of the ultimate apps that can help you to fix the Android home button not working problem with ease. For this app, root and no root versions are available on the Google Play store. To fix the Home button not working issue, no root version is the right one. But, if you want to fix the Back button or other buttons, then you need to go for the root version.

Pros:

It comes with a root as well as no root version.
The app is powerful enough to fix a wide range of buttons.
It shows information regarding the date and time and battery.

Cons:

The root version of the app can cause data loss.

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Navigation Bar app is another great solution to fix the home button not responding problem. It can replace broken and failed button for users who are facing difficulty using navigation bar panel or buttons not working properly. The app offers numerous features, and it is easy to use.

Pros:

It offers many colors to make an incredible navigation bar.
The app provides 15 themes for customization.
It comes with the ability to change the size of the navigation bar.

Cons:

Sometimes, the navigation bar stopped working.
It comes with ads.

URL: https://play.google.com/store/apps/details?id=nu.nav.bar

2.4 Home Button app

Home button app is another remarkable solution to replace broken and failed home buttons for users having trouble while using buttons. With this app, it is quite easy to press or even long press on the home button as assistive touch.

Pros:

You can change the button of color using the app.
With the help of it, you can set a vibrate setting on touch.
It provides support for many press actions, such as home, back, power menu, etc.

Cons:

It doesn’t come with a lot of features, unlike other apps.
Sometimes, it shuts down automatically.

URL: https://play.google.com/store/apps/details?id=nu.home.button

2.5 Multi-action Home Button app

Is your Android physical home button is broken or dead? If yes, then the Multi-action Home Button app can help you to fix it with ease. With the help of it, you can create a button in centre-bottom of your device screen, and you can also add numerous actions to that button.

Pros:

It provides various actions with the button.
It is very simple and easy to use.

Cons:

The app’s very useful feature comes with its pro version.

URL: https://play.google.com/store/apps/details?id=com.home.button.bottom

Conclusion

Hopefully, the methods covered in this post helps you to fix Android home and back button not working problem for you. If it is a system issue, then the best thing you can do is to take advantage of Dr.Fone - System Repair (Android) software. It can surely help you to fix your Android system to normal within a few minutes.

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How to Fix Android App Not Installed Error on OnePlus Ace 2 Pro Quickly? | Dr.fone