Sony reportedly started shipping the flagship Xperia Z3+ smartphone globally on Thursday, after launching it in May in Japan and Britain. (The Japanese version is called the Xperia Z4.) Now many other countries across the globe will start seeing the device in retail shops and offered by carriers.

According to Phone Arena, the Sony Xperia Z3+ is an update of 2013's Xperia Z3 that is marginally thinner than the predecessor. The Z3+ is 6.9 millimeters thick, whereas the Z3 measures 7.3 millimeters. The new device also brings in a slew of improvements.

The key Sony Xperia Z3+ specifications include a 5.2-inch IPS LCD display, aided by a 1080-pixel screen resolution. Phone Arena notes that the new device works relatively better, even with wet fingers. Under the hood, the handset is powered by an octa-core (Qualcomm Snapdragon 810) processor -- the same chip linked to an infamous overheating problem. But Sony has reportedly promised a software fix for the issue -- though the rollout date for that fix is unknown.

Moving on to the camera specification, the smartphone sports the same 20.7-megapixel rear-facing sensor and a gracious 5-megapixel front-facing snapper for selfies and video chats. Sony Mobile says the Xperia Z3+ is waterproof and also comes with dust protection. Therefore, the device is IP65- and IP68-certified.

The handset houses a modest, nonremovable Li-Ion 2,930 mAh battery unit. However, the company says the Xperia Z3+ will offer two days of battery life. The phone also features the now-famous rapid battery charging option. This means the device can be charged from 0 percent to 60 percent in 30 minutes, thanks to the Quick Charge 2.0 technology. Meanwhile, on the software end, the phone runs on Google's Android 5.0 Lollipop operating system (OS).

Sony is gearing up to launch a new phone called the Xperia Z4v. This device will be exclusive to Verizon Wireless. The noteworthy feature of this handset is the famous Quad HD (1440 x 2560 pixels) screen resolution, says Phone Arena.