Sony xperia z3+ good mobile phone. it is battery backup is very good and sound is very nice.sony xperia z3+ back camera 20.7 is very good and front is nice.but using camera phone is heating and battry is low.this phne desgine is very nice. This mobile is very fast, it quickly responds to whatever operation you perform on it. Same time it is a huge load on the processor. At the end it all depends on how fast you operate this mobile, if you do more multitasking on it at a higher speed obviously it heats up because there is no room for heat management as it is slim at 6.9mm and it is completed sealed due to waterproofing. No option for heat to escape.
But if you do multitasking at a moderate speed without much switching between multiple apps. This mobile is your pick for sure.