How do I install unknown apps on my Huawei phone?

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Tags

1. #huawei
2. #android
3. #privacy
4. #installs
5. #files
6. #called
7. #phone
8. #enable
9. #security
10. #install
11. #allow
12. #option
13. #mobile
14. #unknown
15. #other
16. #settings
17. #phones