Hi, im new here. I just finished an home automation project, and it works great with the MQTT API on my browser. On mobile devices tho..... its not there - i mean the Device X is missing in both IOS and Android. thanks for the help.
MQTT Devices are not Supported on mobile devices, yet.
This is coming for sure though, so please check often for updates. It will be in the iOS/Android release notes as well.