If you experience crashing of the apps when you open them on the Razer Phone, you need to clear cache and data to resolve the issue. Follow the steps below:
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Clear the cache from Contacts App.
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Go to Settings > Accounts.

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Check each account and ensure the "Contacts" sync is toggled OFF.

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Go to Settings > Apps and select "Phone App".

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Tap "Data usage" and click "CLEAR DATA".
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Click "OK" to proceed with clearing your Phone App data.

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Go back to Settings > Accounts.
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Check each account and ensure the "Contacts" sync is toggled back to ON.
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Open your Phone App and check if the issue has been resolved.
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If the issue persists, back up the data and perform a factory reset.