How can I use my phone as a compass?

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Tags

1. #compass
2. #above
3. #inside
4. #heart
5. #firmly
6. #circle
7. #level
8. #tilting
9. #chest
10. #phone
11. #often
12. #etched
13. #needle
14. #place
15. #until
16. #points
17. #against
18. #arrow