Google map offline
When I was in Dubai 2 months ago, I relied on Google Map to guide me from various Metro-stations and main streets to shopping malls and hotels. This was done in online mode and sometimes the responses were slow if the connected 3G network was congested, not to mention the data usage charges.
I just discovered that Google Map offers offline cache though the area is restricted to 10 miles x 10 miles for each cache map. That would save me a lot of time and cost next time if I travel in another city. Without delay, I have downloaded cached maps of Shenzhen, Macau, Zhuhai and Beijing. It would be better to view the offline maps in a 7-inch Android tablet than a small smartphone . Google is very thoughtful. Thanks.