Just a few days ago Sony released footage from their smartphone stacked sensor which was capable of up to 1080p 1000fps see here. Today however marks the release of the Xperia XZ Premium and the Xperia XZs both of which include the new camera module and the stacked sensor high speed capability. Both new phones same the exact same camera specifications but differ in the higher end features.
The most advanced phone is the Sony Xperia XZ Premium which has a true 4k resolution 5.5″ screen with HDR like the one present in Sony Bravia TVs. It is also splash proof and rain proof which is good for taking it on the go without much care for weather conditions.