Telegram is an instant messaging app with a focus on speed and security and a good alternative to WhatsApp. Telegram supports group chats with up to 100 contacts, puts a strong emphasis on security and provides generous multimedia support.
High level of privacy and security
One of Telegram's main focus is security and privacy compared to WhatsApp. For example, Telegram features something called "Secret Chats" - an encrypted chat connection that self-destructs messages similar to SnapChat and prevents others intercepting them. In fact, security is one of the things that started attracting users to Telegram in the first place and now that WhatsApp has been bought by Facebook, this looks set to increase. The developers also claim that they do not sell or share user data with third-parties, there is no in-app advertising and yet it's completely free to use.
Send up to 1GB of video
Telegram also features a good level of multimedia support with up to 100 people and allows sharing of all file types up to 1.5GB although you may find uploading and downloading quite slow. You can send batches of photos rather than just one at a time and you can store pretty much as many images as you want because Telegram allows unlimited online storage.
Like WhatsApp, Telegram also supports leaving brief voice messages although unlike applications such as Skype, you can't actually make voice calls.
An excellent secure alternative to WhatsApp
If you want an instant messaging client that offers more security than WhatsApp, Telegram is a very interesting alternative.
Personalized stickers arrive!
Telegram already offered celebrity stickers, but they were rather limited. Now you can create your own stickers by preparing images and following the instructions. You can share your work with other people as well as use stickers created by them.