This is a chronic problem, and I can never find again the resolution to it. I just want them devices and the apps to communicate with one another. the phone forgets the contacts that have been well established. I don't always recognize phone numbers, and when I get texts, I tend to respond to contacts quicker than unknown phone numbers. There are other apps that are supposed to show up on both devices in the same apple apps and they don't. I look in finder and my phone suddenly doesn't show up there any more. The fixes that are in support don't fix it. It's frustrating to have to deal with this same problem over and over. anyone found a fix that actually lets these two devices that are both utilizing the same apple programs, apple id sign in the same in both, just send and receive info like they're supposed to?