I am using sony Xperia z5 in last few months.advantages of this phone 3GB RAM, 5’2inch display.internal memory 32GB expandable 200GB, android version 5’1 lollipop, nano sim feature is available, camera 23 megapixel rear camera with led flash front 5’1 megapixel, 3G 4G connectable.fast charging 30min 60% , the design is good, 2900AMH battery capacity.
Disadvantages:
1) this is not removable battery device
2) front facing camera still improve
3) not have a dual sim
4) feature is less huge cost