Since files like X_PLUS_00.apk are not downloaded from the official Google Play Store, they pose security risks.
To find what X_PLUS_00.apk specifically does, you must find its context. X_PLUS_00.apk
Knowing these will allow me to tell you exactly what the app does and if it is safe. Since files like X_PLUS_00
Installing random .apk files can lead to malware infections or data theft. Only install apps from trusted sources, and never enter personal banking or sensitive login information into a modded application. Installing random
To give you a more interesting and specific guide, could you tell me: did you download this file from (website/forum)?
If you are determined to run it, do so in a secure, isolated environment like BlueStacks or Android Studio Emulator on your PC, rather than your personal phone.