What do you mean, there is no Android mobile phone reminder application installed?

When the APK file is installed on the mobile phone, "Application not installed" is displayed, which means that the program has not been successfully installed.

There are many reasons for the installation failure:

1, which is not supported by the system. What is the most common one? APK requires your mobile phone to be above android2.0, but the mobile phone is actually 1.5 1.6 system, which is not supported.

2. The memory is full, or it may be that your mobile phone is full and you can't install that APK. If there is already software in the mobile phone, the general mobile phone will prompt whether it is necessary to replace the installed software.

Extended data

Precautions for installing software:

1. Install reliable mobile phone security protection software and upgrade it regularly to improve information security.

2. Try to download the APP from regular channels such as mobile phone software official website and reputable third-party app stores. Don't easily click on pop-up advertisements and various unknown links in the app, and don't scan the QR code from unknown sources.

3. Kill mobile phone Trojans through security applications, manage app permissions, and prevent apps from collecting privacy and uploading through various channels. Get into the habit of closing background applications in time, turn off automatic updates, use manual updates, delete or reduce pre-installed software with high power consumption.

Baidu Encyclopedia-Application

Baidu encyclopedia-mobile phone software

Baidu encyclopedia-Android system