Telegram is a messaging app which is launched by indian company is conpeletely an indian app. Telegram lets you to join various groups and chat with friends and send photos, voice and video calls and and text messages.
concept-it is based on concept of sending and receiving messages and be in contact of every relative.
Layout and design-Good and stylish design which attracts users. and is compeletely a modern layout better than whatsapp.
Features-Provides various features like text message and voice and video calls and many more.
Usefulness-It is quite useful app as most of online study groups are availbale on telegram as there is no limitation on members.