Create Instant messaging app like whatsapp or youtube?

I love chatting and sharing photos and videos with my friends on social media, but lately I'm thinking a lot about creating my very own Instant messaging app. So, how does one go about doing it?

When the two last digits of your post number are the same.

JUST DUBS THINGS

when u wanna GET dubs but some punk stole them from u smh

#justNIGRAthings