O instant messaging app description

"O" is provides you to communicate only the most important person in your life for the most private messaging experience.

Features:

Phone Number Authentication via SMS: "O" provides phone number authentication powered by Firebase to secure you account.

Text and Voice Messaging: You can send simply and reliable text and voice messages to "O"

Photos and Videos: You can share moments any time you want with "O"

Voice and Video Calls: You can easily make voice and video calls via "O"