There is a news from Sony that they might introduce the Xperia Z4 compact in Japan on May 13. The idea of Sony is to make the compact model smaller but still keep same specifications as the regular model.
For now, Sony haven’t released any confirmation about this upcoming mini smartphone. But a rumor to tell the company is working to introduce Xperia Z4 compact and ultra models. We don’t know about the specifications and other details yet, but we think we won’t have to wait longer for them.