@vala No, it was probably an accident. It's not a phone and it's way too big by phone standards.
For some reason, chinese companies currently follow a trend of putting sliding screens on handheld PCs, typically to hide a keyboard under.
Anbernic is a company who makes emulation handhelds often running Android, so they decided to hop onto the trend and make an Android device where the controls are under a sliding display.
I have a feeling they were just following the hypetrain in china and created a psuedo xperia play without really thinking about it.
Examples of competing Windows handhelds: