How to Fix Android App Not Installed Error on ZTE Axon 40 Lite 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 ZTE Axon 40 Lite? 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 ZTE Axon 40 Lite 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 ZTE Axon 40 Lite 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 ZTE Axon 40 Lite 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.

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 ZTE Axon 40 Lite 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.

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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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Quick Fixes for Why Is My ZTE Axon 40 Lite Black and White

Why is My ZTE Axon 40 Lite in black and white? This sudden shift in display colors can be perplexing and impact user experience. This issue affects various devices, including ZTE Axon 40 Lite and other Android models. The abrupt shift to monochrome can impact your daily use. It can make apps and content appear dull.

If you’re asking why is my Android phone in black and white, then you’re in luck. Dive into the article below to unravel the causes behind your phone’s black-and-white display. Discover insights on addressing this unexpected issue, enhancing your overall mobile experience.

Part 1. Phone Screen in Black and White? Easy Fixes for Android Devices

Discovering your ZTE Axon 40 Lite going monochrome can be annoying. The section below answers the question: why did my ZTE Axon 40 Lite phone go black and white? It involves a combination of software adjustments and careful troubleshooting. Follow the practical solutions below to restore vibrant colors to your device.

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Accessibility Settings

Accidental activation of accessibility settings may turn your display monochromatic. The “Grayscale“ or “Color Inversion“ option in the Accessibility or Vision section of your phone’s settings might be enabled. It can cause a black-and-white display. Here’s the solution:

Step 1: Open your phone’s settings. Navigate to the Accessibility or Vision section.

Step 2: Disable the Grayscale or Color Inversion option.

App Conflicts

Certain third-party apps can cause conflicts, leading to a black-and-white display . Newly installed apps might be the culprit, affecting your device’s color settings. Some apps also have grayscale modes that can impact the overall display. Here’s how to fix it:

Step 1: Identify and uninstall recently installed apps.
Step 2: Check individual app settings for grayscale modes.

System Glitches

System glitches or software bugs can trigger display issues. It can result in a black-and-white screen. Outdated software versions may contain bugs affecting color output as well. Regularly checking for software updates can prevent or resolve such glitches. Here’s how.

Step 1: Go to your phone’s settings. Check for software updates in the Software update or System update section.

Step 2: Update your device if there is a software update available. Ensure your device is running the latest software version.

Battery Saving Modes

Battery-saving modes can also alter display settings to conserve energy. It can sometimes result in a black-and-white screen. These modes limit power consumption by reducing color output. Reviewing and adjusting these settings can restore the normal color display. Follow the steps below.

Step 1: Open your ZTE Axon 40 Lite’s Settings. Navigate to the Battery or Battery & Performance section.

Step 2: Check and adjust battery-saving settings, including toggling power-saving modes on or off.

Hardware Issues

In rare cases, hardware issues may cause a black-and-white display. Physical damage, loose connectors, or problems with the display hardware can impact color reproduction. Identifying and addressing these hardware issues may be crucial for resolving the problem. Here’s what you should do.

Step 1: Check for physical damage, loose connectors, or display hardware issues.

Step 2: Seek professional assistance or contact the ZTE Axon 40 Lite device manufacturer if hardware problems are suspected.

Consider a reliable third-party tool if your phone persists in black and white despite troubleshooting attempts. Tools such as Dr.Fone System Repair Android offer advanced solutions for complex system issues. They ensure your phone regains its vibrant display without a hitch.

Part 2. Using a Dedicated Tool: Dr.Fone for Fixing Black and White Display Problems

Dr.Fone is a reliable solution for addressing black-and-white display issues on Android devices. For a stress-free repair experience, follow these simple steps using Dr.Fone - System Repair (Android).

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Step 1: Download and install Dr.Fone. Launch the program and click on System Repair on the main window. Connect your ZTE Axon 40 Lite to the computer using the correct cable. Choose Android among the options.

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Step 2: Provide accurate device information, including brand, name, model, country/region, and carrier details. Confirm the warning and click Next.

Step 3: Follow the on-screen instructions and wait for the program to download the firmware. Once downloaded and verified, Dr.Fone automatically initiates the repair process on your ZTE Axon 40 Lite.

Step 4: After a while, your ZTE Axon 40 Lite will have all system issues fixed. Click Done to complete the process or choose Try again if the problem persists, allowing you to repeat the steps.

Note

It’s highly recommended to back up your Android data before using Dr.Fone for repair.

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How Dr.Fone Can Help You Beyond Display Issues

Beyond resolving black-and-white display problems, Dr.Fone serves as a comprehensive tool for all Android issues. The platform can enhance your device functionality.

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Key Features

Here are key features that make Dr.Fone an invaluable resource:

Fix All Kinds of Android Problems

Dr.Fone is designed to address a wide range of Android issues. These include black screens, malfunctioning Play Store, app crashes, boot loops , and bricked Android devices . Its versatility makes it a go-to solution for diverse system challenges.

Wide Device Compatibility

With support for over 1000 Android models, Dr.Fone ensures compatibility with a vast array of devices. The platform is versatile and a widely applicable tool for Android users.

High Success Rate

Dr.Fone boasts a high success rate in resolving Android issues. It provides users with confidence in its effectiveness and reliability.

Additional Functionalities

Below are additional functionalities of Dr.Fone that support your device to keep it in top shape.

**Phone Manager.**Fone acts as a comprehensive phone manager. It allows you to transfer contacts, SMS, photos, videos, and more between your ZTE Axon 40 Lite and computer. The feature simplifies data management and ensures seamless organization.
Phone Backup. The tool enables selective backup of Android data on a computer. It provides you with the flexibility to safeguard essential information. The selective backup feature ensures efficient use of storage and allows for easy restoration when needed.
**Screen Unlock Without Losing Data.**Fone offers a secure way to unlock the screen of Android devices without losing data. You can regain access to your devices without compromising valuable data, whether due to forgotten passwords, pattern locks, or PINs.

Part 3. Tips for Maintaining Your Phone Display Brilliance

Maintaining a vibrant phone display enhances user experience and ensures optimal visual clarity. Follow these tips to keep your phone’s display at its best:

Adjust Brightness Mindfully

Optimize brightness settings based on ambient lighting. Avoid excessively high brightness levels, which can strain your eyes and impact battery life.

Update Regularly

Keep your phone’s software up-to-date to benefit from performance enhancements, bug fixes, and display optimizations provided by system updates.

Be Mindful of Background Apps

Close unused background apps to free up system resources and prevent unnecessary strain on your phone’s display and overall performance.

Use Static Wallpapers

Dynamic wallpapers and live backgrounds consume more power. Opt for static wallpapers to reduce battery drain and maintain consistent display performance.

Avoid Extreme Temperatures

Exposure to extreme hot and cold temperatures can affect your phone’s display and overall performance. Store your device in a moderate environment.

Implement Screen Timeout

Set a screen timeout to turn off the display when not in use automatically. This conserves battery life and prevents unnecessary wear on the screen.

Clean Your Screen Regularly

Fingerprints, dust, and smudges can affect display clarity. Clean your screen regularly with a microfiber cloth to ensure a crisp and vibrant view.

Secure Your Phone

Implement security measures to prevent unauthorized access. This protects your data and ensures the display remains secure and untouched.

Enable Night Mode

Many phones offer a night mode that reduces blue light emission. It promotes better sleep and reduces eye strain, especially during nighttime use.

Implement App-Specific Settings

Some apps have specific display settings. Explore and adjust these settings within individual apps to enhance your visual experience and reduce strain.

Conclusion

The guide highlights the “Why is My ZTE Axon 40 Lite black and white“ query. It offers practical solutions for Android and ZTE Axon 40 Lite users. By addressing common issues such as accessibility settings, app conflicts, and system glitches, you can restore their vibrant displays. Maintaining your phone display involves mindful practices, from adjusting brightness to regular updates.

The guide provided solutions for display issues and showcased the versatility of Dr.Fone System Repair Android. It’s a holistic solution for users seeking a seamless and reliable Android experience, addressing diverse concerns with precision and efficiency.

Calls on ZTE Axon 40 Lite Go Straight to Voicemail? 12 Fixes

Have you ever experienced incoming calls to your phone go straight to voicemail without ringing? It can be frustrating, especially if you’re expecting an important call. It could be due to simple things like turning down the volume or forgetting to turn off the Do Not Disturb mode. In other cases, it might be because you accidentally blocked the caller’s number.

In most cases, incoming calls going to voicemail without ringing are common. However, if it’s happening frequently or for all calls, your phone may have a problem.

This article will discuss why incoming phone calls go straight to voicemail and how to fix the problem. We’ll also show you how to use Wondershare Dr.Fone, a powerful Android System Repair tool, to solve such issues. So, if you’re uncertain why that last call went straight to voicemail, keep reading, and we’ll cover everything you need to know.

Part 1: Not Ringing? Here’s Why Calls on Your Phone Go Straight to Voicemail

If an incoming call to your cell phone goes straight to voicemail without ringing, there could be a few reasons. Here’s what to look for and what you should do to fix it:

Turn Off Do Not Disturb (DND) Mode

DND mode is a feature that silences all incoming calls, notifications, and alerts. If DND mode is enabled, your cell phone goes straight to voicemail when someone calls. To turn off DND mode, swipe down from the top of the screen to open the notification settings panel, then tap the Do not disturb icon.

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Here’s an alternative way:

Step 1: Open the Settings app and go to Notifications.
Step 2: Tap Do not disturb.

Step 3: Toggle Do Not Disturb offto disable the mode.

Turn Off Call Forwarding

One reason calls go straight to voicemail without ringing is if you enabled call forwarding. Call forwarding is a feature that redirects incoming calls to another number. To turn off call forwarding:

Step 1: Open the Phone Dialer app on your device, then tap the menu icon and select Settings.

Step 2: Navigate to Supplementary services > Call forwarding.

Disable Call Barring

If a phone call went straight to voicemail, another possible explanation is the call barring. It is a feature that restricts calls from being made or received on your phone. If activated, it can cause incoming calls to a phone to go straight to voicemail. To turn off call barring on ZTE Axon 40 Lite devices:

Step 1: Open the Phone Dialer app, then tap the menu icon in the top right corner.
Step 2: Go to Settings > Supplementary services > Call barring, then tap OK.
Step 3: Select Voice call, then turn off your preferred outgoing and incoming calls. When prompted, enter 0000 as a password.

Update Your Phone’s Software

Sometimes, software bugs can cause problems with incoming calls, which may be why your last incoming call went straight to voicemail. If your phone runs outdated software, try updating it to the latest version.

To check for updates, open the Settings app and go to Software update or System update. For a seamless update experience, follow the step-by-step instructions on your mobile screen.

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Reset Network Settings

If the incoming calls on your phone go straight to voicemail, consider resetting your phone’s network settings. Network settings control how your phone connects to the cellular network. If these settings are not set up correctly, incoming calls may not be able to reach your device.

Note: Resetting your network settings will erase any saved Wi-Fi networks and Bluetooth pairings, requiring you to re-enter them after the reset is complete.

To reset your network settings on most Android devices:

Step 1: Open the Settings app on your smartphone, then tap System or General Management.
Step 2: Go to Reset > Reset Network Settings and confirm the action.

Turn Off Bluetooth

When Bluetooth is on, it can interfere with your device’s ability to receive calls, causing them to go straight to voicemail without ringing. To turn off Bluetooth on an Android device, you can do one of the following:

Swipe down from the top of the screen to open the Quick Settingspanel, then tap the Bluetooth icon to turn it off.

Go to Settings> Connections > Bluetooth and toggle the switch off.

It should help ensure that calls come through to your phone instead of going to voicemail.

Check Airplane Mode

If turning off Bluetooth didn’t solve the issue, another possible cause could be that your phone is in Airplane Mode. Airplane Mode turns off all wireless connections on your phone, including cellular service, which can cause calls to dial straight to voicemail. There are two ways to turn off Airplane mode on Android:

Using the Settings app:

Step 1: Open the Settings app.
Step 2: Tap Network & internet.
Step 3: Toggle off Airplane mode or Flight mode.

Using the Quick Settings panel:

Step 1: Swipe down from the top of the phone screen to access the Quick Settings panel.
Step 2: Look for the Airplane mode or Flight mode icon, then tap it to turn it off.

Check Blocked Numbers

“My boyfriend’s phone goes straight to voicemail when someone is calling. Any idea why that might be?”

Do you also find yourself asking what does it mean? It could be that he has blocked that phone number. To check this:

Step 1: Open the Phone dialer app.
Step 2: Tap the menu icon in the top right corner and select Settings.
Step 3: Tap Block numbers. If you find the number in the blocked list, remove it to ensure that their calls come through to the phone.

If you still have trouble reaching your boyfriend, try calling him from a different number. If your call didn’t go through, you know that he hasn’t blocked your number and that there may be another issue with his phone.

Turn Off Google One VPN

If you’re using Google One VPN, try turning it off to see if that fixes the problem. Some users have reported that Google One VPN can cause incoming calls to a phone to go straight to voicemail. To turn off Google One VPN:

Step 1: Open the Google One app on your ZTE Axon 40 Lite.
Step 2: At the bottom, go to the Benefits tab, then tap View Details below the Online protection with a VPN section.

Step 3: Toggle off Enable VPN.

Contact Your Carrier

If your phone calls go straight to voicemail after trying all the above, contact your carrier for help. They may be able to troubleshoot the problem or determine if there is a service outage in your area.

And if your carrier confirms that there is no service outage or billing-related block, the problem may be with your phone itself. You may need to try resetting your phone to factory settings or taking it to a repair shop.

The Caller Used Ringless Voicemail

Ringless voicemail is a service that allows businesses to bypass your phone’s ringtone and send you pre-recorded messages directly to voicemail. Ringless voicemail is often used for marketing purposes. If you think you’re receiving ringless voicemail calls, you can contact the company calling you and ask them to remove you from their list.

Part 2: Not Clear About the Root Cause? Troubleshoot Directly by Wondershare Dr.Fone

If you’re unsure what’s causing your calls to go straight to voicemail, you can try using the Dr.Fone System Repair tool. This software can scan and repair your phone for any underlying problems, which may fix the issue and get your calls ringing again.

Dr.Fone supports over 1000 Android models, including unlocked ZTE Axon 40 Lite models and models from carriers like AT&T and Vodafone. It has an intuitive interface and is easy to use, even for beginners. Learn below the steps on how to use Dr.Fone System Repair to fix incoming calls that dial straight to voicemail:

Step 1: Download Dr.Fone on your computer, then launch it once installed.

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Step 2: Connect your smartphone to your desktop or computer using a USB cable. Next, from the Toolbox homepage, select System Repair.

Step 3: Select Android as the ZTE Axon 40 Lite device type.

Step 4: Click Start to begin repairing your smartphone.

Step 5: Select the ZTE Axon 40 Lite device details on the Name, Model, Country, and Carrier drop-down lists. Next, select the agreement checkbox, then click Next to proceed.

Step 6: Follow the in-app instructions to enter Download mode on your ZTE Axon 40 Lite, then click Next.

Step 7: Wait while the app downloads the firmware; once done, click Fix Now.

Step 8: Enter the code in the input box to verify the ZTE Axon 40 Lite device information in the dialogue box, then click Confirm.

Step 9: The app will start repairing the system issue on your ZTE Axon 40 Lite. Once completed, your app should restart, then click Done to close the app.

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Conclusion

When your phone calls go straight to voicemail without ringing, it can be a frustrating and disruptive experience. Not only do you miss important calls from work, friends, or family, but it also leaves you feeling disconnected and out of the loop. As a temporary measure to avoid missing important calls, check your voicemail regularly.

For a prompt solution, consider using Dr.Fone if incoming calls on your phone go straight to voicemail. It is a powerful mobile solution that can also address other system problems, including stuck boot loops, app crashes, black screens, and bricked devices. If you consistently experience this issue, it’s advisable to reach out to a professional for assistance.

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