I have bought this mobile due to its camera features. It has android os system and powered by 4gb ram and 64gb of internal memory. The storage can be expand to 128 gb. It has octa core processor. It has 16MP+ 16MP rear or primary Camera and 13MP+ 13MP front facing Selfie Camera with Auto focus, Flash and HD Recording . This is the main feature of this beautiful mobile. You can take pictures with different styles like if you smile it take auto pictures. It has live picture system which is in apple. It has face id lock. It is the first phone with 4 cameras. Processor is working fine, you can play big games. Battery does not ldrain fast. If you have passion of photography p have to go for this slim, smart DSLR inbult feature android mobile