A working Play Store on Android 4.4.2 won’t make your device brand-new, but it can revive basic app access and extend the device’s usefulness for simple tasks: music, light web browsing, e-books, and a handful of legacy apps. If you rely on banking, messaging, or security-sensitive apps, consider upgrading to a newer device or OS for long-term safety and app compatibility.

A: No. WhatsApp ended support for KitKat in February 2023. The Play Store will show "Your device isn't compatible with this version." You would need an older WhatsApp APK (version 2.22.25.85 or earlier).