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Technical Information
Service Manual
(3) Settings
User can set vibration, message alerts, server,  updates,  etc. The  server  setting  here  must  keep  the same as the server setting in 
"Conguration" mentioned before.
Otherwise, remote control will be invalid.
(4) Feedback
User can feedback suggestions to back-stage management for maintenance and development.
Tap "Feedback". Enter your suggestions and then submit it.