5 Messages in iCloud
Messages in iCloud allows you to store your iMessages in a centralized place (iCloud), which ultimately means conversations will be synced beautifully across all of your devices.
Messages you delete on your iPhone, will also be deleted on your Mac, etc. Users who prefer to keep their digital life tidy will love this feature.
To set it up, head over to Settings > Tap your Apple ID > iCloud > Toggle on Messages > Go to the Home screen > Open Messages and follow the onscreen prompts.