LAUNCH    X-431 PRO Series User Manual 
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Fig. 5-1 
Note:  If  the  VCI  is  not  paired  up  with  the  tablet  before  doing  this  step,  a  prompt 
message box will appear: 
   
Fig. 5-2                                             Fig. 5-3 
Check all the possible reasons of Bluetooth connection failure carefully, and then tap 
“Confirm” to enter Fig. 5-3.   
If the VCI was once used with other devices, you need to cancel the pairing of the VCI 
first via either one of the following ways: 
• 
On the Android’s home screen, tap “Settings” -> “Bluetooth” -> Choose the desired 
VCI from the Paired list. Tap “ ”, and then tap “FORGET” to unpair it. 
• 
Tap “User Info” -> “VCI Management” -> Tap “Deactivate matching”. 
In Fig. 5-3, tap “Scan” to start searching for the VCI and pairing up with it.