App Store
The method for canceling a subscription in the App Store is as follows.
1. Select the 'My Account' icon in the top right corner.
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2. Select 'Subscriptions' to view your entire list of subscriptions.
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3. Select 'BB’.
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4. Select 'Cancel Subscription’
You can continue to use BB until the end of your current subscription period even after you cancel the subscription.
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Google Play