Wi-Fi Adapter Usage

In case you use a Wi-Fi adapter, you first have to set up a Wi-Fi connection between your mobile device and your OBD-II adapter.

Settings menu

Wi-Fi menu

The Wi-Fi IP address of your mobile device should be static while connected to the adapter. This enables your mobile device to use internet via Cell Network and a Wi-Fi connection to the OBD-II adapter in parallel.
In order to set up a static IP address for your mobile device, you need to know which IP address is used by the OBD-II adapter. An easy way is to check the addresses which are automatically assigned by DHCP. Then the first two entries are used for the static setup: there they have to be entered manually.
Here you can see how it looks with iOS 11:

Get IP Address and Subnet Mask from connection details

Change to Manual and enter IP Address and Subnet Mask

That's how it looks after changes are saved

 

And here you can see how it looks with iOS 10 and earlier:

Get IP Address and Subnet Mask from DHCP connection details

Select Static and enter IP Address and Subnet Mask

Please make sure that the remaining fields are left empty; otherwise the Mobile Internet does not work!