What should I do if the app is not installed and where is it installed?

Set up. Software Program settings. Allow the installation of unknown software programs Follow-up:

I ticked that place: Well, that's if you're installing a deep modification program for the system. Then you can install it if you root it.

Follow-up: How do you do that? ：

Well, that's the easiest. Install a mobile phone assistant on the computer, and there is a one-click root. You can get the system read and write permissions.

Follow-up question: No, my phone is rooted, I just want to install some ordinary small software now, but it always prompts that the application is not installed: Eh, then this is very troublesome.

I don't know which case you are. Wait a minute, I'll add it to you, you can try it Follow-up: I just got on the pea**,**An ordinary little game can't do it.,But a casual **flashlight can:

Solution: Connect to the computer in storage mode and find the SD card directory. Android Secure folder,There should be one in it,It could also be another name,In short, it's obviously different from the normal program naming format of the file,Delete,Install the software again,See if it's good。

Supplement: Second, open the settings - management application with the system's own program management to view the program on the SD card, some programs are not color SE icons, it turns out that these software without icons are doing trouble, these software without icons are some of the previous software that was not installed correctly or uninstalled incomplete software data, if you install it again, it will be an error, now we use the system's own software management to uninstall them clean, and there will be no error when installing the software again. Third, there is also a part because the software signature has changed, so it cannot be overwritten and installed, just delete and reinstall the new version.

Follow-up: I don't understand, but then I just installed the software in the phone's internal memory and then transferred it to the SD card. ：

I'll go. That's a software conflict. Well, I'm the questioner's testimonial:

Thank you! Can it solve your problem?

Mobile phone manager, software management inside.

Application Not Installed Workaround:

Open the ES browser, then press the Menu key on your phone, select "Settings";

Click File Settings;

After selecting Show hidden files, return to the file browsing interface and click Open Folder. android_secure；

Long press the "Select" button, and then select "Select All";

Click Delete;

Click OK and try the installer again.

You open Settings - Apps - All. The other is the problem of the software itself. com.

For example, if you install **, one is that you have installed this software before and then uninstalled it, and then uninstalled it. In this case, there are residual files, so you can find a mobile phone called taobao, right? There are two cases.