Sony Xperia Z3 Series devices
Sony Unveils New Z3 Series Xperia Smartphones, Tablet, Smart Wearables at IFA 2014Sony Mobile

Gadget lovers, who are eagerly waiting for the release of Sony Xperia Z4, will have the opportunity to see it weeks ahead of its launch, as supposed pictured of the device have been leaked online for the first time.

The Sony Xperia Z4 is expected to be unveiled at the upcoming Mobile World Conference 2015 (MWC 2015) to be held in Barcelona before launching a few weeks later. Speculations were rife that it would see the light of day at the Consumer Electronics Show 2015 (CES 2015) but was postponed. Sony has now scheduled a press conference for 2 March, giving a strong hint that it would announce its flagship device on the day.

Chinese sources have revealed pictures that are believed to be front-facing panel of the Xperia Z4, according to a report by GSM Dome (via Weibo). The device sports a mounted display and looks good but it is very similar to its predecessors, and its dual-front speakers placement is like that of the Xperia Z2.

There were reports that Sony might not release the device at the MWC 2015, but it is said to have been certified by the Ministry of Internal Affairs and Communications in Japan and Indonesian Postal Regulatory.

The Sony Xperia Z4 is expected to come with features like a 5.2-inch 1440 x 2560px Triluminos display, Snapdragon 810 processor, Android 5.0 Lollipop, 20.7MP camera, 3,400mAh battery and water resistance, according to GSMArena

However, Tech Radar reported that the device might sport a 4.7-inch screen with other features like IP68 water and dust proof certification and LTE Cat 9 connectivity. Earlier reports claimed that two models of the device would be launched - one with a Quad HD display and other with Full HD resolution. It is expected to sport a 5.4-inch or 5.5-inch screen, powered by Qualcomm Snapdragon 810 processor, run on Android 5.0 Lollipop, come packed with 32GB internal memory and 4GB RAM, house a 20.7MP main camera and 4.8MP front snapper, 3420 mAh battery, and Qi Wireless Charging. 

It may be mentioned that Sony hasn't revealed any details of its upcoming flagship smartphone till date despite several features of the device being leaked to the media over the last few months.