If you use it only for sending to MIUI users and never receive, it's okay

Useful only if a large portion of people around you possess MI phones. When receiving files on non-MIUI phones, you have to turn on Hotspot manually, and after the transfer your original Hotspot name and password settings are not restored. The name stays something like AAAAAJzxfOUAQwEyOPPO R11, which is plain annoying.