Because Android 4.4.2 no longer receives security updates, only install APKs from APKMirror (which verifies cryptographic signatures). Avoid sites like "apkpure," "rexdl," or "mobogenie."

Once you've chosen an app, the next step is finding a safe and compatible APK file. Since you may need an older version of an app that works with Android 4.4.2, the Play Store isn't always an option. Here are some trusted websites for downloading APK files.

Turn off Bluetooth and Wi-Fi when reading offline to maximize battery life on older hardware. To help you get the exact setup you need, let me know:

Ultimate Guide: PDF Reader APK Download for Android 4.4.2 (KitKat)

Note: On some KitKat devices, this option is under Settings > Security > Device Administration .