Facebook Lite is superior for a daily driver on KitKat. The browser is a good backup if the app bugs out. Security Considerations for Android 4.4.2 This is a critical section. Android 4.4.2 no longer receives security updates from Google. The last security patch for KitKat was released in 2017.
While Facebook Lite itself is safe, your operating system is vulnerable to exploits like (discovered in 2015). facebook lite android 4.4.2
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