Bb z10 sound was very good the 3.5 jack so best everr sound quality and very smooth sound but z10 it’s not so easy for use like menu was difficult and spc. minimise opti. It therefore looks like it made too many mobile from mobile should re awssm phone today I bought this phone and u can’t believe that the phone is better then samsung and iphone all features it is good value for money 17k on amazon.in After updating 10.1.2 you can directly access every andro and very best feature it’s bbm for the chat with frd.