Sound reception is good and also mic works fine a power bank if you receive 20-30 calls a day while in office. Let me point out the pros and cons for you all.
its very easy to use for phone running on lollipop Software .
Pros:
Excellent gaming performance.
Excellent screen resolution - good sunlight legibility
Metal body - premium looks
Excellent touch responsiveness
Ultra fast finger print sensor
Loud and clear call reception
Good camera
Cons:
Poor battery backup - Will not last for a day
Heats up very fast - Even while talking
Hybrid sim card slot - Means you can put two sim cards or one sim+ MicroSD
No headphone with the package.