What if iwatch and iphone are not synchronized?

Some apps and functions in 1.Apple Watch can be used independently. 2. When the mobile phone is disconnected (Bluetooth and WiFi are turned off), the available Apple Watch App are: 1, completely normal: clock, world clock, alarm clock, stopwatch, countdown, setting 2, basically normal: heart rate, fitness, fitness activities 3, calendar (you can open it, but you can only look at the information synchronized before) 4. Map (you can open the previously downloaded map, but you can't open the new map for positioning) 5. Music (you need to press the screen hard, choose AW as the sound source, and you must pair AW with Bluetooth headset to use it) 6. Telephone (you can browse the address book and call records, but you can't answer the phone) 7. Information (you can browse and manage previously received information, but you can't send and receive information) 8. Mail (you can browse and manage previously received mail, but you can't send and receive it) 9. Weather (you can browse the previously synchronized weather information, but you can't refresh it) 10, Passbook (you can see the voucher that has been synchronized to the watch, but you can't synchronize the new voucher) 3. Other Apple Watch's own software and third-party software can't be opened and run (. If the way to disconnect is to turn on the flight mode of Apple Watch, the weather will not be able to enter, and the rest is the same as above.