Just learnt that we can download a Google Map for offline use. This is useful to me as, when I go to Macau and return on the same day, I may not want to buy foreign data connection to use in Macau just for navigating my ways around.
How: https://www.youtube.com/watch?v=6-ADQIzc5a4
Where to find the downloaded map on one's mobile phone:
Open the Google Maps app. Tap on your profile picture in the top right corner. Tap “Offline Maps.” Tap “Select Your Own Map.”