I am using this before 5 month .its indiusually I never suggest any one for nokia x.
Sound quality is one of the worst sound ever.if you use earphone of the nokia is better worst expresence than mobile speaker.and its not easy to use because of window platform and features and worst performance.
There are more drwa back in relability and durability.and its design and feature are more camplex and worst.
And all of the performance its not even value for money.