Trying to clear space on my iPad by deleting message history there, but not on iPhone
I want to keep the messages on my iPhone forever, but delete messages on my iPad older than 30 days.
If I set Message History > Keep Messages > to 30 days on my iPad, is that going to sync with my iPhone and also delete my messages older than 30 days as well? How do I know for sure and not find out the hard way that all my messages (and memories) on iPhone beyond 30 days are all gone forever?