0667John Appleseed
2017/09/15(金) 03:18:35.55ID:vaVap0KRAT&Tもsmsとmmsは駄目みたい。
To send and receive SMS/MMS messages on your Apple Watch Series 3, the synced iPhone must be powered on and connected to the AT&T network.
http://about.att.com/story/iphone_8_apple_watch_series_3.html