First, I suggest you don't migrate just because you're bored with Android. Windows Phone evolves very slowly compared to Android. Sooner or later you'll probably be bored with Windows Phone as well. If you want to try out Windows Phone as a secondary backup phone that's better.

Disadvantages:

1) WP has the worst stock music player in the world - XBox Music. Even die-hard fans of Microsoft/WP will tell you the music player is bad compared to other platforms. It has few features and it lags.

http://www.wpcentral.com/xbox-music-awful-...-81-update-near
http://winsupersite.com/xbox-music/microso...her-platforms-0

2) Less customizability. You better like rectangles and squares on your homescreen because there's no way out.

3) Searching sucks. Apple has spotlight search and Android has Google Now but if you want to find anything on your phone don't rely on the Search button. It only searches Bing.

Advantages:

The UI is more consistent and all WP phones use the same official Windows Phone operating system. No bloated UI enhancements.

This post has been edited by Andrew Lim: Aug 2 2014, 09:28 PM

I stand corrected. I didn't know they added Universal Search in 8.1. I never got to update my Lumia 920 to 8.1 because the phone screen lasted less than a year before it had issues and now the screen no longer turns on.

Edit Wait, what exactly does the 8.1 universal search do? Does it search contacts, music as well as apps?

This post has been edited by Andrew Lim: Aug 2 2014, 10:43 PM

How do you trigger the universal search? The Search button or through Cortana? Is Cortana available in Malaysia?