Question: what smartphones have the best battery life?
Answer: Samsung Galaxy S9. The Galaxy S9 has a fast-charging 3000 mAh non-removable battery with Adaptive Fast Charging Support. ... 
Samsung Galaxy J7V. ... 
Samsung Galaxy S8+ ... 
Moto Z2 Play. ... 
LG G6. ... 
LG Stylo 2 V. ... 
Droid Turbo 2 by Motorola. ... 
Samsung Galaxy Note5.