If you want a physical worldmap for quick reference try this app!

You can study and learn the most important geographic regions and cities.

Features:

• Physical world map with most important cities.
• It is not required an internet connection to explore the world map.You can see the map anytime offline.
• Zoom control with gestures.
• The world map reference has a lot of geographic points: rivers mountains lakes seas islands peninsulas capes gulfs straits canals plains depressions deserts highest and lowest points on earth surface and the most important cities of the globe.

Try this free app for android you will have a complete world map reference in your device and a complete atlas in your brains!