: Telegram will ask for your phone number for verification. Enter your number, and Telegram will send you a verification code.

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.

After entering the SMS code, your chat history (if you used Telegram before) will sync, and you can start messaging.

: Using an old APK (Android Package) for 4.2.2 means you will not receive security updates or new features like trimmed voice messages or high-quality photo sharing.

Current official versions of the Telegram app . The official Telegram FAQ states that the minimum requirement for the current Android app is Android 6.0 and up .

Since the latest version in the Play Store might be too heavy or incompatible with your specific hardware architecture, third-party repositories offer verified legacy APKs: