The Sony Xperia XZ3 is a flagship smartphone released in 2018. It's known for its stunning OLED display and powerful performance.  

Key Features:

• Display: 6.0-inch OLED HDR display with a 1440 x 2880 resolution  
• Processor: Qualcomm Snapdragon 845  
• RAM: 4GB RAM  
• Storage: 64GB internal storage (expandable via microSD card)  
• Camera: 19MP Motion Eye™ camera with 4K HDR video recording  
• Battery: 3330mAh battery with fast charging  
• Operating System: Android 9.0 Pie
   

The XZ3 offers a premium experience with its vibrant display, smooth performance, and impressive camera capabilities. However, it's worth noting that it's an older model and may not receive the latest software updates.