You have surely downloaded an application in XAPK format. It is simply a compressed folder that contains an APK file with the accompanying OBB files.
XAPK Extractor: install apps compressed in APK format
With XAPK Installer you will be able to download XAPK applications to your device as if it were a regular APK from your file explorer. Just search for the folder that contains the file to run the installation process. The first time, your Android will probably ask you for permission to do so.
Here are the main features of the app:
- Built-in file explorer that shows content in internal storage as well as SD memory cards.
- Scan all files in APK and XAPK format.
- Automatically remove APK or XAPK files after installation.
Thanks to this tool, you will not find any more errors when you want to install OBB files in your device. You will now be able to enjoy any app or game that comes compressed in XAPK format.
Conditions and additional information:
Minimum operating system required: Android 4.1.