Telegram regularly updates its app to add new features, improve performance, and fix bugs. However, these updates often require newer versions of Android, leaving older devices behind. Android 4.2.2, also known as Jelly Bean, is an older version of Android that might not support the latest versions of Telegram. By downloading the Telegram APK specifically compatible with Android 4.2.2, you can ensure that your device can run a version of Telegram that suits its capabilities.

Before installing any APK outside the Play Store, you must allow installation from unknown sources:

Old Android versions sometimes block SMS permissions. Go to Settings → Security → SMS Short Code protection? Disable it. Alternatively, request the code via a phone call.