Download Free offline google maps for android for Delhi-NCR here . The file size is 295 MB. Google map also has option to download offline maps for certain area but it will automatically delete after 30 days.
Install Maverick app from google play store in your android mobile, now copy this downloaded file into your mobile’s internal memory /sd card at this location : /Maverick/maps.
And enable this offline google map from your Maverick app settings of user defined maps. Now enjoy full delhi/ncr map up to zoom level of 18, without 3g or gprs.
If you want to make your custom maps for any location you can done this using mobile atlas creator. I have elaborate all about in details in my post how to create offline google maps using mobile atlas creator for rmaps.
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Update- I have written this post for rmaps app but now this app is not available at Google Play Store. The same map has been reloaded from 4shared.com to dropbox for faster downloading.
Dropbox Download for free offline google maps for android for Delhi-