Error code

Android INSTALL_FAILED_INTERNAL_ERROR

ANDROIDINSTALL_FAILED_INTERNAL_ERROR
Android Error Code· An error code shown by Android or the Google Play Store.

What it means

The package manager encountered an unspecified internal error while installing the APK.

How to fix it

  1. Restart the device and retry the installation.
  2. Clear the cache partition via recovery mode.
  3. If the error persists perform a factory reset after backing up data.

Not affiliated with Android. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.