hi, i was been using this phone for almost a month, so far i felt it was a pretty good phone as a basic phone, can't expected a lot for this entry phone. some more, it's my 2nd phone as company phone c/w data plan, so far sufficient for whatapps, email and surfing net. and most important, it easily hide behind my note 2 and can be attached as 1 phone~ 
Camera wise pretty decent, enough for me to take photos for my report. os wise pretty smooth, but apps, such as whatapps sometimes respond quite slow. this was my first win8 phone and i'm satisfy with it. 

1. yes, here maps work offline and superb performance...
2. nokia music not support for malaysia at this moment...

1. PURE OFFLINE for both HERE maps and HERE drive. but do take note that HERE lens does take up data when using.
so far its works like charm for me in KL, PJ, subang area. never tested it at klang or other selangor area.

2. NOPE. but its not hard to find another standalone music app. there's actually dozens at store