Unfortunately it the best way to communicate with people in China. Works fine most of the time. Has many good functions, similar to Facebook but less shareable. The worst problem is that often it tries to interrupt and override other apps while they're in use to the point where I've had to uninstall it several times due to it's annoying pinging. But if you set "do not disturb" and notification restrictions high it becomes tolerable and has good video calling capabilities.