The provided text appears to outline compatibility requirements and troubleshooting instructions primarily focused on using the Fitbit app across various devices running different operating systems.

Some key points that can be extracted from this text are:

1. Operating System Requirements: The Fitbit app is compatible with devices running either iOS or Android operating systems.

2. Device Compatibility: Specific models of phones, tablets, and other compatible devices are not explicitly mentioned in the provided snippet. However, it suggests compatibility across most popular devices rather than exclusivity to particular brands.

Additionally, there seems to be an emphasis on account requirements for using Fitbit products and services:

1. Google Account Requirement: For new users, a Google Account is mandatory.

2. Existing User Options:

- Users who already have a Fitbit account can continue using it until at least 2025.

- After this period ends or if they haven't done so yet, existing users will need to transition their login information to use only a Google Account for accessing these services.

In summary, the text suggests that compatibility issues may arise when trying to set up and utilize Fitbit products on certain devices not meeting specific requirements.

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