Where did you find the download link? A reputable forum (like XDA Developers ) will have user reviews and expert analysis of the file.
To find what X_PLUS_00.apk specifically does, you must find its context. X_PLUS_00.apk
They may offer themes, custom icons, or interface tweaks not available in the Play Store version. Where did you find the download link
To give you a more interesting and specific guide, could you tell me: did you download this file from (website/forum)? They may offer themes, custom icons, or interface
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.
"Plus" apps often remove restrictions found in the official version, such as unlocking premium tools, unlimited currency in games, or removing ads.