A long ago I used microsoft 540. It was the waste mobile I ever used.it was taken by my friend suggestion. it do not have many features like android.
I does have a side load installer like android mobile.many of games like shadow fight.is not there in wondows store.its avalable in.iphone.and Android stores.
It will automatically closes games as well as apps in when we are using it .so dont waste ur money for buying a microsoft mobiles.especially this lumia 540.