As of August 2023, the official YouTube app requires Android 6.0 (Marshmallow) or higher. If you try to install the app from the Google Play Store on Android 4.4.2, you will see a "Your device isn't compatible with this version" error. Even if you sideload an older APK, the app will eventually refuse to open or crash, citing security updates.
Title: YouTube on Android 4.4.2 KitKat: What You Need to Know in 2026 youtube para android 4.4 2
Is your old phone running Android 4.4.2 showing "YouTube won't open" or "Update Google Play Services"? Here is the truth: Google has ended support for KitKat. As of August 2023, the official YouTube app