There aren't any good phone cloning apps or programs that I'm aware of. I'd be cautious with this kind of thing, because it's fertile ground for shady developers. It's better to make sure all of your important data is backed up or synced somehwere on a regular basis, so that if your phone gets lost or fails, you can easily sync that data to a new phone. I always recommend to take advantage of Google's cloud for things like Google Contacts, Google Photos, and Google Drive, but there are other cloud solutions as well, like Microsoft OneDrive.
the free subscription is what i'm after.
since i can only use one or the other phone seems like similar use of the sub while maintaining it.
ifi give up my landline this thing needs to be there when i need it.