Did you know...? iOS & Android: Remote Operator for Vision and Samba in Unitronics' Blog: PLCs, HMIs and more A group blog by Unitronics Home Team Posted October 2, 2017 · Report reply Buy recently a JZ20-T40 with Ethernet add-on card MJ20-ET1. Remote Operator works on PC but on android and iOS only communicates (SB24 on state) and shows "connection to PLC failed!". Does anyone know if there is any forecast to work on mobile phones or am I doing something wrong? I still want to send a video of the operation of the RO in external networks (WAN), but I do not know who to send, just sending to the support, it is usually necessary to explain the same thing over and over again.