Vivo is a good company for smartphones.Vivo is not a very old company like apple, sony, samsung.
It is a new company which is launched few year ago.
Now, I tell you about vivo v3
Vivo v3 was launched in april 2016, this phone has 3g ram with snapdragon 616 processor.
It has 5 mp front camera and 13 mp rear camera with pixels - 720×1280.
It has 2550 mah battery.
It has LCD capacitive touchscreen of 5.0 inches.
It has lollipop android v5.1
It has 2 variant 16gb and 32 gb of internal storage both have 3gb ram.
Vivo v3 is a great smartphone.
No heating problem, I am using this phone till may.
It is a very good choice.