As for advantages, among others:
File and media sharing
Quickly share large videos, documents (.doc, .ppt, .zip, etc.), and send an unlimited number of photos to your friends.
Stickers, emoji, hashtags
Express yourself with a custom set of stickers and fun emoji. Use #hashtags to easily find related messages and media.
With Telegram app ecosystem will you convey the message to the speed of light in all devices.
Your message can not be hacked, intersepted or stolen. Your data is safe and highly encrypted
You can create group chats with up to 200 users and broadcast your ideas and thinking to your entire contact list.
Add bots to make your pleasure chatting and unique. Playing the game right in the chat window or learn something new from bot trivia