Android emulator and Real Android device display issue -

iam beginner level programmer in android..now iam developing own android app. dont have many android real device testing galaxy nexus,galaxy y , galaxy grand , galaxy note 2

my problem , have created emulators similar screen specification of above device galaxy nexus , galaxy y simulator gives exact diplay real device when have run app. galaxy grand , galaxy note 2 different exact device...

please 1 know issue..i used same screen specifcation provides in manufacturer site.

please 1 me.

thank you

if using latest version of avd manager, find new tab labelled device definition.

how can configure android emulator simulate galaxy nexus?

here select new device, , specify screen size(in) , resolution(px). can specify size, screen ratio , density besides other things.