It used to be so good but I don't think it's still good now. There are too many bugs. 1. Whenever I try to call someone, my phone usually blacks out. 2. Every time I talk with my chatmates, their messages sometimes don't appear and I have to restart the app to fix it. 3. Whenever I'm back reading my conversation with someone, my messages won't appear and only their replies appear on the conversation. Please fix the app, it's getting more and more annoying now.