Google Maps adds Wi-Fi only and microSD capabilities for off-line maps
An update to the Android version of Google Maps is adding a Wi-Fi only setting. This will allow the app to work only when the device in use is connected to a Wi-Fi signal. With this setting enabled, Google Maps will pull data not from a cellular network, but from a Wi-Fi pipeline instead. This should save users from burning their precious high-speed data on getting directions. Keep in mind that only those areas you've saved off-line will work with this setting toggled on.
The update also allows Google Maps users to save their off-line areas to a microSD card. This will help those using a phone with a small amount of native storage from using all of it on off-line maps. Of course, this new feature is moot if your handset doesn't come with a microSD card. But that is another rant for another day.
Lastly, the update will now allow Android users in three Indonesian cities to compare prices from ride-sharing service GO-JEK to Uber. Ten more cities will gain this feature soon. 24 cities in Indonesia, Malaysia, Philippines, Singapore, and Thailand will be able to compare prices from rise-sharing service Grab. And cities in Ireland, Poland, Italy, Austria, Russia, and Israel can now see side-by-side pricing for Gett, Hailo, and MyTaxi.
source: Google
Lastly, the update will now allow Android users in three Indonesian cities to compare prices from ride-sharing service GO-JEK to Uber. Ten more cities will gain this feature soon. 24 cities in Indonesia, Malaysia, Philippines, Singapore, and Thailand will be able to compare prices from rise-sharing service Grab. And cities in Ireland, Poland, Italy, Austria, Russia, and Israel can now see side-by-side pricing for Gett, Hailo, and MyTaxi.
The update should be hitting your Android-powered handset shortly, You can try to manually update Google Maps by going to the Google Play Store. Click on the hamburger menu in the upper left of the screen. Go to my apps & games. Scroll down to Google Maps and click on "Update."
source: Google
Things that are NOT allowed: