Ottmtyvx.apk <Certified – Solution>

Security software often flags known malicious filenames; changing the name constantly helps them slip through.

You downloaded a "modded" game or a free utility app from an unofficial source, and this file was hidden inside the package. OTTMTYvX.apk

Go to Settings > Apps and look for anything you don't recognize or that has a blank icon/name. Uninstall it. OTTMTYvX.apk

If you install OTTMTYvX.apk, you are essentially giving an unknown developer access to your phone. Common risks include: OTTMTYvX.apk