On May 20, 2013, Jolla finally released its first phone running Sailfish OS overseas. In terms of its design, it fits in well with their "I am the other half" slogan, as the body is split into two parts, with the screen attached to the main body in the front, while the back half is a swappable back cover that comes in white, aquamarine, light green, and orange. In terms of specs, it has a 4.5-inch screen, dual-core, 4G support, 16GB of internal memory, support for micro SD cards of unknown capacity, an 8-megapixel autofocus lens (the specs of the front lens are unknown), and a self-swappable battery; while its volume keys and on/off button are placed on the top left side of the phone.　　How big the Sailfish ecosystem will be remains to be seen, but it's fascinating to see that it's compatible with Android apps, but how so remains to be seen. Finally, Jolla is holding a pre-order/fundraising campaign called 'The Movement', which will see interested parties pay a minimum of 399 euros (about 3,150 yuan with tax) to secure their hands on the phone by the fourth quarter of 2013!

The phone is made up of two parts, the display part of the frame is made of aluminum alloy with a very detailed and smooth surface. Then there is the "other half", which is the main innovation in industrial design. The size comparison with the N9 and IP4 is shown, and the 4.5-inch screen is of course much larger. The Sailfish system does not use any buttons, instead of tapping on the screen and gestures (as with Meego), the live video demonstrates that after opening an application, you can use your finger to push the screen from right to left, that is, to return to the main interface. The difference with Meego is that after swiping left and right, it is back to the main interface, which is similar to Meego's multitasking interface, rather than installing applications. In addition, there is an intermediate state when switching apps, from the apps back to the main interface when the finger has not left the screen, there is a time display, continue to push to the left to return to the multitasking interface. If you push halfway and then back to the application. Sailfish's powerful multitasking features put all other operating platforms to shame! First of all, during the demo video, you can see the Feeds subscription interface gradually showing up by swiping up from bottom to top. Continuing to slide upwards will switch to the subscription interface. Swiping from right to left transitions to the main multitasking interface. You can see that the video playing app shrinks, but still continues to play, and you can play or stop the video directly on the multitasking interface through the Cover function.