If the software/game cannot be installed on the mobile phone, it is recommended that:

1. Check whether the Unknown Source setting is turned on.

2. Check whether the machine supports the downloaded software format. The software format supported by Android phones is. APK format.

3. Please read the software details when downloading the software to see if there are any requirements for the machine operating system.

4. If you still can't install the software/game, it may be because the software version is low or there are compatibility problems between the software version and the system. It is recommended to download a new version and try to install it;

5. If it is invalid, back up the data (contacts, information, photos, etc. ) and try to restore the factory settings.

If the problem still exists, please take the purchase invoice, maintenance card and machine to the Samsung service center, and the professional after-sales engineer will help you test it.

2. Why can't I install the downloaded software on my mobile phone? Shows that the program is not installed.

1. Sometimes zd doesn't download the corresponding software according to the model of the mobile phone when downloading the software. If the software does not support your phone model, you will not be able to install the software. You can connect to App pc with your mobile phone, and then it will automatically detect your mobile phone model. At this time, you just need to download the software that supports your mobile phone model.

2. When downloading mobile phone software, sometimes the software download is incomplete, which will cause the wrong version installation. At this time, just delete the incomplete software and download a complete software to continue the installation. You can also download it using the App Store. Everything in the App Store is complete and genuine, without viruses and advertisements.

3. When the phone memory or phone memory card is full, the phone will not be able to install software. At this time, you can clean up some junk files or unused software in your mobile phone and memory card, and then install the software and you will be fine. You can use App Bao to optimize your mobile phone, which can be completed in the toolbox after connecting it to the pc-side App Bao.

4. When the installation package is large, sometimes the installation process will be very long.

Hope to adopt!

3. What should I do if my phone can't install the installation package?

Several Solutions to Error Prompt in Program Installation

Error prompt 1: The certificate has expired.

Problem description: The software certificate has expired.

Solution: 1: Adjust the mobile phone time to the certificate time limit (adjust the mobile phone time several months in advance) before installation. After installation, adjust it back to the correct time.

(How to adjust the time: Settings-Phone Settings-General-Date and Time-Date)

2: Re-sign the software

Error Tip 2: Certificate error.

Problem description: 1. The installed software is not signed. 2. If it's a JAR program, it's usually because the certificates are in conflict. (Many java games will give this error prompt. See Solution 2 below. )

Solution: 1: software signature;

2. Install programs (software/games) directly on the mobile phone or replace the memory card.

Error Tip 3: Update Error

Problem description: This prompt usually appears because the old version of the same software in the mobile phone was not deleted when the software was installed, and it was repeatedly installed. Or conflicts caused by different titles of old and new software installers.

Solution: 1: Install the new version of the software after uninstalling the old version;

2. Unpack the new version of the software and change the title of the installer to be consistent with the old version in the PKG document.

Error Tip 4: The certificate is not yet valid.

Problem description: The mobile phone time exceeds the time limit of the software certificate.

Solution: 1: Check whether the date setting of the mobile phone is correct;

2. Adjust the time of the mobile phone to the time limit of the certificate and then install it. Just set it back to the correct time after installation.

Error Tip 5: The required program access rights are not granted.

Problem description: 1. Due to the security problems of the third edition of Saipan system, the permissions of some programs are prohibited. A program without this permission cannot be installed, or the program has been signed. 2. Error in the certificate.

Solution: 1: Re-sign with unsigned software before installation;

2. Delete the mobile phone certificate authority restriction -XX mobile phone.

Error 6: The certificate is restricted.

Problem description: 1: It is caused by wrong software signature or multiple software signatures. 2. A high-authority program signed by a low-authority certificate.

Solution: 1: Re-sign with unsigned software before installation.

2. Certification authority required for the verification program, which should match the program issuing authority. (At present, the certificate authority generated by this forum is 17, and this problem may occur when signing a program with 19 authority. )

Error 7: A protected application provided by an untrusted provider cannot be installed.

Problem description: There are several possible reasons for this problem: 1 Mobile phone setting problem 2. The software is unsigned or the signature is incorrect 3. Certificate conflict.

Solution: 1: Go to "Program Management"-"Options"-"Settings" of the mobile phone: "Install Software" is set to-All, and "Online Certificate Check" is set to-Off;

2. Re-sign unsigned software before installation;

3: Install after the parallel machine (please make a backup before the parallel machine).

Error 8: The file is corrupted.

Problem Description: The installer file is damaged or incomplete, which may be caused by file damage when downloading or solving the program.

Solution: Please make sure that the downloaded program file is good. Recommend to download again (from other posts) or decompress the program and try again.

Error prompt 9: No prompt.

Problem description: After the program is installed, clicking its icon can't run, which usually happens in JAR programs with Chinese file names.

Solution: Delete the installed JAR program, change the file name of JAR program to full English, and then try again.

Error prompt 10: Mobile phone failed to start.

Problem description: This problem usually occurs when the mobile phone is restarted after the program installation fails, partly because of the failure to upgrade the machine.

Solution: If a program fails to install, just take out the memory card and restart it. And delete the wrong program. If it appears after the upgrade of the mobile phone, it will be repaired again. It should be noted that some booted and memory-resident software cannot be solved by formatting. So these softwares need to be shut down or deleted before the soft grid.

Error prompt 1 1: This application is for development only. Continuing the installation may cause serious problems with the equipment.

Problem description: This is a disclaimer of the software.

Solution: Ignore it and continue the installation!

Error prompt 12: The validity of the certificate cannot be checked online. Please check the settings.

Problem description: Mobile phone setting problem

Solution: Settings-Phone Settings-Applications-Program Management: Software Installation-Select All, Online Certificate Check-Select Close.

4. Why can't the mobile phone software be installed or downloaded?

If you can't download it, it may not be within the scope of network services, such as places where there are no 4G and 3G signals.

It is also possible that the router network of the WIFI you are connected to is not good or the router has no network access. If so, please restart the routing and reconnect to WIFI.

It may have been downloaded to the phone memory, but the phone memory is not enough to download. Please change the download path and try again.

What can't be installed may be insufficient memory. Try cleaning the memory card or replacing it with a larger one.

Maybe you chose to install it on your mobile phone, or maybe your mobile phone has insufficient memory to re-select the installation path.

It may be that the mobile phone system settings do not allow the installation of applications other than system application download. Take VIVO mobile phone as an example, you need to open Settings-More Settings-Security-Open from unknown sources, and unknown sources may prompt you to run new installed applications provided by unofficial stores.

The above is for Android phones, and Apple has not studied it.

5. Why can't I install the application after downloading it?

The downloaded application failed to install. Please do the following:

1. Please check that the format of the third-party application is correct. Android phones only support third-party applications in APK format.

2. If the application is not downloaded from the "application market", it is recommended to download the official version and install it in the application market. To continue to install the installation package downloaded from unofficial channels, you need to trust the source of the program to install it normally. Go to settings >; Advanced settings >; Security "or" Settings >; ; Security and privacy, turn on the unknown source switch, and then reinstall the application.

3. It may be caused by insufficient remaining storage space. Please use "Mobile Manager" to clear the mobile phone cache and system garbage or uninstall unused applications.

4. If the application is installed on the microSD card, please check whether the microSD card cannot be recognized or damaged by the mobile phone. Please reinstall the microSD card and restart the phone or replace the microSD card.

5. During the downloading process, the installation package may be damaged or downloaded incompletely due to unstable network connection. Please delete the installation package and try downloading again.

6. If this application is already installed in your mobile phone, please uninstall it, and then try to download and reinstall it.

7. The downloaded third-party application may not be compatible with the mobile phone, so it cannot be successfully installed. Please try downloading other similar applications.

6. What if the mobile phone software can't be installed? It always shows not installed.

Several reasons:

1 The memory of the mobile phone is too small, and there are too many softwares installed. Please delete unnecessary software.

There are too many softwares running in the background at the same time, please close them in time.

There are too many garbage caches, please open the settings to clear them.

The downloaded software does not match the mobile phone system and cannot be installed. Please pass the verification after unloading and reloading.

5 virus infection, cleared by antivirus software.

There is no Internet connection, and some software installations need to connect to the Internet to obtain server and port information.

7 package parsing error, please download again, or try to download again from other channels. It is recommended to use the mobile assistant to download.

The above is for reference only, please adopt it!