do both an ipad and iphone have to be on the same iOS to sync text messages
so i have iPad Pro 10.5 running iOS 10 which i use for everything. i don’t have an iphone and don’t think i’d need to do much with it so i was thinking of just getting a 5s or a 6 but i have a question about text message syncing? Do the iPhone have to be running the same iOS or can the iphone be running ios 12 and my ipad be running ios 13 and sms syncing would still work??