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Why is it that you need iMessage turned on in o...

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Functions that are available on your Apple Watch when it is away from your iPhone depend on various factors including:

• Your Apple Watch model - Series 3 (GPS) vs Series 3 (GPS + Cellular):
  • Apple Watch - Compare - Apple
• The features of your carrier service plan:
  • Apple Watch - Carriers - Apple
• The type of connectivity that is available to your Apple Watch at the time.

Features that are available in different cases are detailed here:

• How to use your Apple Watch without your iPhone nearby - Apple Support

Turning off iMessage on your iPhone also disables the service for your paired Apple Watch, preventing you from sending or receiving messages via iMessage (Apple's messaging service).

Text messaging to non-Apple devices requires either a connection to your iPhone, SMS via Wi-Fi Calling or built-in cellular capability, depending on the model and circumstances.

最後更新：2017-09-26 16:55:14

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