Here is the guide on how to connect Android to PC via Wifi for Contacts transfer using Backuptrans:
Step 1. Run Backuptrans Contacts Sync on Android phone
Run Backuprans Contacts Sync on Android phone and click Connection button to get the Wifi connection info.
Note: If you haven't installed Backuprans Contacts Sync on Android phone, please go the to Market (Google Play) on your Android to search "Backuprans Contacts Sync" to download and install.
Step 2. Run Backuptrans software on computer
Run the Backuptrans software on your computer and then click "Tools" -> "Connect Android Phone via WiFi".
Step 3. Enter your WiFi connection info
Input your WiFi connection info (got from Backuptrans Contacts Sync Connection on Step 1) into the text box and then click Connect button to start..
Now your android phone is connected successfully with our software via WiFi.
If you have any question, please contact us at email@example.com.