Mobile Internet. You should enable data transfer service in your mobilephone and to turn off WiFi.
WiFi network. It is enough to connect with available WiFi network and proceed with performance test.
In the performance test,application is measuring three main parameters:ping, download and upload speed. A detailed description of each parameter and its interpretation, reflecting quality of service, can be found at Methodology section.
Attention! One time test use about 15MB of data transfer.