COMECopying a COME APK between phones does not verify it
A copied APK keeps the need for source, completeness and compatibility checks. Moving a file is not the same as obtaining a current release.
Keep its origin known
Record where and when the original file was obtained and which version it claims to contain. A file-sharing app's successful transfer confirms only its own operation, not the publisher or release status of the APK.
Check the receiving phone
The new device may have different Android requirements or policies. Read Android's installer identity and warnings. Do not rename the package or disable protection to make an incompatible copy install.
Consider the current route
Compare the copied file with the present app-entry information. If provenance or currency is unclear, use the known current route rather than testing an unexplained copy. Preserve any existing working installation.
A useful next step
Install only after the source and receiving device's requirements are clear.
Related: Prepare COME recovery before changing phones