I have switched Android phones about 10 times and I have never successfully used the Google-made backup. Here's why, I think: Old phone is on Android N. Back

I have switched Android phones about 10 times and I have never successfully used the Google-made backup. Here's why, I think: Old phone is on Android N. Backups happening regularly by their service. Phone breaks or I get a new phone. New phone is running Android N-1. In the setup process it tries to use the backup and it fails, of course, because it's from a newer version of Android. Every. Single. Time. What I should have done, and I ALWAYS FORGET: do not login to your account until you have fully updated the phone to the latest Android version!