A new and unknown Sony device has passed through the Federal Communications Commission (FCC) in the USA and according to some previous informations this could be the upcoming Sony Xperia Z4.
There is not many informations but it seems that this device will support LTE bands 2, 5 and 7.
A few days ago the Sony Xperia Z4 was certified inJapan and it should has a LTE Cat.9-capable (450Mbps) Snapdragon 810 chipset, 5.2″ 1440 x 2560px Triluminos display, 20.7MP optically stabilized camera, water resistance, 3,400mAh battery and will run Android Lollipop.
In what concern to the screen resolution, according to a rumor the Xperia Z4 will come with either QHD (in the US) or FHD.
We will have to wait for the official announcement.