Best answer: No. While you can use a cellular Apple Watch while using an Android phone, the watch won’t pair to the phone, so they won’t exchange data. You’ll also probably get terrible battery life.
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The Apple Watch needs an iPhone to get set up, and won’t pair with Android at all
There’s no getting around it: if you want to activate and set up your Apple Watch, you need an iPhone. You need to use the built-in Watch app on your iPhone to activate your watch, set up things like iCloud and Apple Pay, and activate cellular connectivity if you have a watch with LTE.
There’s no way to pair an Apple Watch with an Android phone after setup, either. While it is a Bluetooth device, the Apple Watch is made explicitly to work with the iPhone.
The only workaround requires a cellular Apple Watch, and you’ll still need an iPhone
To call this a ‘workaround’ might seem a bit disingenuous, but it’s also technically correct, as this method lets you use your Apple Watch with an Android phone. Or, more accurately, it enables you to use your Apple Watch while using an Android phone. You’ll need a cellular Apple Watch, along with access to an iPhone. You’ll also want your nano-SIM card for your phone.
What you need to do is pair the Apple Watch with your iPhone, activate cellular capability on the watch, then swap the SIM card from your iPhone to your Android device, as outlined in our guide.
Because the Apple Watch with LTE can function semi-autonomously and has its own cellular line with your carrier, both your Android phone and Apple Watch will receive calls placed to you. You might also see text messages, though this might be less than reliable.
You also won’t be able to offload any data, like fitness data, to your Android phone. Again, your phone and watch aren’t paired at this point; they’re just tied to the same cellular account.