Having trouble with the map size and tile size

im new to game development and i’ve been trying to create a map to show on my samsung galaxy s4 i was wondering if someone could tell me the accurate map and tile size i should be using for 1080x1920 resolution.

a help would be very much appreciated and thanks.

Did you notice the New Map dialog displays the size of the map in pixels?

Yes but it was very confusing for me if i change the map size it changes and if i change the tile size it changes so i was lost,could you please give me a quick explanation for the map size and the tile size?

The math is really very simple. Given a tile width of 32 and a map width of 10 tiles, the width in pixels of the map will be 32 x 10 = 320.