Complex sentence: As it is fully emulated, not simulated, Jolla strongly declares it is possible to test behaviour like with a real device when using Jolla SDK developer's environment, making it possible to develop and test software without using a Jolla device.
Split into simpler sentences: As it is fully emulated, not simulated, and Jolla strongly declares it is possible to test behaviour like with real device when using Jolla SDK developer's environment. So it is possible to develop and test software without using a Jolla device.