How to Fix Android App Not Installed Error on Vivo X100 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.

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 X100 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 Vivo X100 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 Vivo X100 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 Vivo X100 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.

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.

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.

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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.

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#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 X100 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!

#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 It: Vivo X100 Pro Won’t Turn On

Did your Vivo X100 Pro decide to go on vacation and refuses to turn on? If your Vivo X100 Pro won’t turn on for no apparent reason, finding why it failed to power on and the solution for it is not a fun process.

Here, we hope we are able to give you a checklist of reasons behind this issue and the possible steps you can take to rectify it.

Part 1: Common Reasons That Your Vivo X100 Pro Won’t Turn On

If you cannot find any reason why your Vivo X100 Pro will not switch on, here are some possible reasons:

Your Android phone is simply frozen in power-off or sleep mode. In which case, it fails to switch itself on or wake itself up when you initiate it.
Your phone’s battery may be out of charge.
The operating system or installed software is corrupted. The tell-tale sign if this is that if you manage to switch on your Vivo X100 Pro, it freezes or crash soon after.
Your device is clogged up with dust and lint causing the hardware to not work properly.
Your power button is broken , which caused it to not be able to trigger the necessary action needed to power up the Android phone. Check to also see if your connectors have no carbon build-up which will cause your phone to not be charged properly.

Part 2: Rescue Data on Android Phone That Will Not Turn On

If you need some help rescuing data from an Android phone that will not turn on, the Dr.Fone - Data Recovery (Android) will be your best friend in your data recovery attempt. With the help of this data recovery solution, you will be able to intuitively recover lost, deleted or corrupted data on any Android devices. Its flexibility and efficiency in rescuing data make it one of the best software out there.

Note: For now, the tool can rescue data from broken Android only if your phone is earlier than Android 8.0, or rooted.

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If your Vivo X100 Pro won’t turn on, here is how you can use the software to recover data:

Step 1: Launch Wondershare Dr.Fone

On your desktop computer or laptop, open Wondershare Dr.Fone. Click on Data Recovery on the left column. Connect your Vivo X100 Pro to the computer using a USB cable.

Step 2: Decide which file types to recover

On the next window, you will need to check the boxes corresponding to the type of files you can recover from a list. You can get back Contacts, Messages, Call History, WhatsApp messages & attachments, Photos, Audio and more.

Step 3: Select the problem with your phone

Opt for “Touch screen not responsive or cannot access the phone” or “Black/broken screen”. Click Next to continue.

Look up for your device – pick the Vivo X100 Pro device Name and Device Model. Advance by clicking on the Next button.

Step 4: Go into your Vivo X100 Pro’s Download Mode.

The data recovery tool will guide you on how you can go into your Vivo X100 Pro’s Download Mode. You should be getting a step-by-step guide on your computer.

Step 5: Scan the Android Phone.

Using the provided USB cable, attach your Vivo X100 Pro to your computer – the data recovery tool should be able to discover your device automatically and scan it for recoverable data.

Step 6: Review and Retrieve the Data from Broken Android Phone.

Wait for the program to finish scanning the phone – once completed, you will be able to get a list of recoverable files. You can have a preview of the file by highlighting them. Tick the box next to the file name and click on Recover to start retrieving the files and save them in the destination of your choosing.

Part 3: Android Phone Won’t Turn On: One Click Fix

After repeated attempts, when your Android mobile/tablet stops buzzing, what options do you have to revive it?

Well, we would recommend picking Dr.Fone - System Repair (Android) to fix an Android phone will not switch problem. This one-click Android system repair tool resolves every Android system issue without any fuss including Android Phone won’t turn on issue.

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Prior to fixing the Android phone will not switch and getting things back in action. You need to make sure that you have backed up the Android device . It is recommended that rescuing data from an Android phone by backing up is better than recovering it post the process.

Phase 1: Get the Vivo X100 Pro device ready and connect it

Step 1: Run Dr.Fone on your computer once the installation is complete and tap the ‘Repair’ option form the interface. Now, connect your Android mobile with the computer.

Step 2: You will find a range of options, tap on the ‘Android Repair’ one. Hit the ‘Start’ button so that you can proceed to fix Android Phone won’t turn on hassle.

Step 3: Now, over the Vivo X100 Pro device information window, ensure to feed your exact device details. Press the ‘Next’ button then on.

Phase 2: Enter ‘Download’ mode for fixing your Vivo X100 Pro

Step 1: You need to put your Vivo X100 Pro in Download mode for resolving the Android phone will not switch on.

For the Vivo X100 Pro device having ‘Home’ button, you got to switch it off and press ‘Volume Down’, ‘Home’, and ‘Power’ keys for 5-10 seconds at once. Let them go and click on the ‘Volume Up’ button to put your phone in ‘Download’ mode.

For ‘Home’ button-less device, turn the phone/tablet down first. For 5 – 10 seconds, hold down the ‘Volume Down’, ‘Bixby’, and ‘Power’ buttons. Tap on the ‘Volume Up’ button to get into the ‘Download’ mode, after releasing the 3 buttons.

Step 2: Hitting the ‘Next’ key will allow you to download firmware and proceed with the next step.

Step 3: Dr.Fone - System Repair (Android) would verify your firmware download and then take a while to rectify and resolve Android Phone won’t turn on issue.

Part 4: Android Phone Won’t Turn On: Common Fix

To try fixing an Android Phone that won’t turn on, follow these steps:

For any Android devices, remove the battery (considering the battery of your Vivo X100 Pro can be removed) and leave it out for at least 30 minutes. Put back the battery in and try to turn it on.
Press and hold down the Power and Volume Down buttons at the same time for 15-30 minutes to reboot the Vivo X100 Pro device.
Should the first two steps do not work, charge your Vivo X100 Pro to get it out of the start-up loop. You can also opt to use a different battery, just in case your current battery is the source of the problem.
If there are any connected hardware e.g. SD card, remove them from the Vivo X100 Pro device.
Start your Vivo X100 Pro in Safe Mode by pressing and holding down the Menu or Volume Down button on your device.
Should the first five steps do not work for you, perform a hard reset. Do take note that each device will have a different way to do so and that data that is stored locally on the phone will be deleted.
Send your Vivo X100 Pro to the repair shop should none of these steps work.

Part 5: Useful Tips to Protect Your Vivo X100 Pro

There are several reasons as to why your Vivo X100 Pro won’t turn on. The problem could be a hardware or software issue which could be prevented. Here are some useful tips to protect your Vivo X100 Pro.

I. Hardware

Remember that the components that make your Vivo X100 Pro is sensitive. To protect these components from being damaged, use a good guard casing.
Take apart your Vivo X100 Pro and clean it routinely to avoid dust and lint from clogging the phone and overheating it.

II. Software

It is recommended to download apps from Google Play Store. This way, you can be sure that your app comes from a trusted source.
Read the app’s permission to see which part of the operating system and your personal information that you are giving access to.
Install reliable anti-virus and anti-malware software to safeguard your Vivo X100 Pro from malicious attacks.
Make sure you update your operating system, software and apps to make sure you have the latest version – the developer may have fixed the bugs that have caused problems on Android phones.

It is important to note that your phone contains some important data. Therefore, when your Vivo X100 Pro won’t turn on do not just give up - there are plenty of tools at your disposal to recover back your files and phone.

Vivo X100 Pro Camera Not Working Unexpected Error? Fix It Now

For all its glory and goodness, the Android OS often has its users pulling their hair in frustration at just how buggy the OS can be at times. So, if you’re having one of those days today, we are here to help. Camera app is one of the most used apps on smartphones today. People only launch the app when they want to take a photo, for everything else there’s a dedicated photo gallery app. What happens when you launch the camera app only to realize it threw an error and you missed your photo moment? Don’t throw the phone, not yet. Let us help you out.

Part I: Why Is Android Camera Not Working?

There are a few reasons why the camera app is not working on your Vivo X100 Pro.

Low Memory

Camera app does rely heavily on system resources, so in case you have too many apps open and for some reason the OS is not able to manage the resources appropriately for the camera app to function as it should, you will get a camera error.

Low Storage

The camera app needs storage space to save the photos it takes. So, in case your phone is running low on storage space, the camera app would likely malfunction as it would have no way to store the photos it would be taking.

General Bugs And Glitches

OS bugs and general glitches within the OS and the camera app can cause camera not working issue anytime during everyday operation. This is part and parcel of any technology.

Hardware Issues

In the rarest cases, there might have developed an actual hardware issue with the camera system on your Vivo X100 Pro. The likely culprit is misuse and abuse, such as a dropped phone or maybe the phone was too hot for extended periods of time, causing hardware issues.

Part II: How To Fix Android Camera Not Working Issue?

So, how to get the Android camera not working problem solved? There are a few ways you can try fixing the camera not working issue on your Vivo X100 Pro right where you are, without needing to take the Vivo X100 Pro device to the manufacturer’s service center.

II.I: Restart The Handset

One of the first things to do any time an app or your phone or tablet does not work like it should, restarting the Vivo X100 Pro device refreshes everything just enough to resolve most commonly occurring issues.

Use the power button on your smartphone to restart your Android handset and see if this resolves the issue.

II.II: Close And Relaunch The Camera App

If the camera app (or any app for that matter) has been in the background for a while and then it is brought to the foreground, there are always chances of it crashing for any reason, or not working as expected. So, closing the app completely and relaunching it is recommended.

Step 1: Launch the app switcher on your specific Android device the way your device manufacturer suggests you to. Usually, it is a swipe up and hold gesture to get into the app switcher.

Step 2: Next, you can choose to close just the camera app or, better yet, close all apps by tapping the Close All button. Flicking any app upwards (quick upward swipe) is how you close an app. If there is no Close All button anywhere, repeat the gesture for all open apps.

II.III: Check App Permissions

These days, thanks to strides in the privacy initiatives, apps need permissions before they can function the way they do. Most of the times, apps such as camera do have the necessary permissions, but sometimes it is possible that the permissions are set incorrectly. To check if the camera app has the requisite permissions, do the following:

Step 1: Go to Settings > Apps > Camera > Permissions.

Step 2: Tap Camera.

Step 3: See if the selected option is Allow Only While Using This App. If not, select it.

II.IV: Clear The Camera App Cache

Clearing the camera app cache is sometimes helpful. To do that:

Step 1: Go to Settings > Apps > Camera and tap Storage Usage.

Step 2: Tap Clear Cache.

II.V: Clear The Photo Gallery App Cache

The camera app is closely tied to the photo gallery app that comes baked in into Android OS. That is because photos that the camera app takes are stored in the photo gallery app. Consequently, if there were any issues in the photo gallery app, that could lead to the camera app not working on Android problem. Here’s how to clear the photo gallery app cache:

Step 1: Go to Settings > Apps > Photos > Storage Usage.

Step 2: Tap Clear Cache.

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II.VI: Check For App Updates

This does not happen always, but sometimes, with known bugs and issues, there may be an update released that fixes those bugs and issues that prevent some users from using a given app reliably. Checking for updates is a good step to make sure that your camera app is updated to the latest version possible.

Step 1: Go to Play Store and tap your profile picture on the right.

Step 2: Tap Manage Apps and Device.

Step 3: If there are updates available, Tap Update All to update all apps.

II.VII: Cool The Phone Down

We do not realize the immense power that is packed into the thin smartphone form factor these days. If you have been using the phone to video chat for a while now, you might not realize that the phone has become hot, especially if you are using a desk stand. Same for shooting high-resolution videos; the phone does get quite hot shooting high-resolution videos.

If this is the case, close all apps and let the phone cool down. You might even want to shut the phone off to help cool it faster.

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II.VIII: Nudge The Camera System

You may want to tap your camera system (the lenses and surrounding area) gently to see if that gets the camera working. In case it did, this is indicative of a hardware issue, and you should get it checked at the service center at your earliest convenience.

II.IX: Fix Android Camera Not Working Issue In One Click (With Dr.Fone)

Now, if the above fixes have not worked, you might want to repair your Android OS once before you make that appointment with the service centre. And, we have just the app to help you fix your camera not working on Android problem quickly.

Wondershare Dr.Fone is a multi-module app that works on both Windows and macOS and is the only app you will ever need to resolve nearly all of your smartphone and tablet issues that you are likely to encounter. Need to take backups? Dr.Fone Phone Backup has you covered with the ability to take and restore even selective backups, and to any location such as your computer or an external disk as well. Want to transfer WhatsApp chats to a new phone? Use WhatsApp Transfer to do just that! Bought a new phone? Use Phone Transfer to transfer contents from old phone to new, and then use Dr.Fone Data Eraser to securely wipe your old phone before giving it away!

Today, we will use Dr.Fone’s System Repair (Android) module to fix Android camera not working issue quickly.

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Step 1: Launch Dr.Fone app on your PC or Mac.

Step 2: Click System Repair module and then Android.

Step 3: For now, don’t bother with the scenarios given and click Start to go to the next screen.

Step 4: Your Android device will be detected by Dr.Fone. If anything seems incorrect, use the dropdown options to change it, and click Next.

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Step 5: Your phone needs to be put into Download mode before it can be repaired. Follow the instructions shown onscreen and click Next.

Step 6: Dr.Fone automatically downloads the most recent firmware for your device and when it is ready, waits for your input. Click Fix Now to start the repair process.

Step 7: You will need to enter a 6-digit code (digit zero, six times – 000000) to confirm and begin the repair process.

When the repair is complete, Dr.Fone shows the final screen as below:

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Conclusion

The camera app on your smartphone is one of the most important apps you use. This is not a game; this is an app that makes previous memories possible for you. So, when you get any of those incorrigible errors that are impossible to make sense of, what do you do? This guide gives you 9 fixes to fix Android camera not working error quickly and easily.

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How to Fix Android App Not Installed Error on Vivo X100 Pro Quickly? | Dr.fone