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It’s possible to use apple watch without an iPhone, but you won’t get the full experience. The Watch can store up to 2GB of music and 75MB of photos, and it has 8GB of total built-in storage. You can also sync fitness data, track your location, and access remote notifications. Even without an iPhone, the Watch still requires an active internet connection through either Wi-Fi or cellular. Here’s what you can do with apple watch when you don’t have your iPhone with you.