Well, there's something right in my head.
It was when I went on a trip to Japan with my friend last year.
We were going to a sushi restaurant while looking at a map on my phone.
But the Wi-Fi router's battery was dead, so we couldn't use the Internet.
We had a strong feeling of becoming an international lost child.
But we knew that even if we didn't have access to the Internet, the map roughly showed where we were going.
So we looked at it and deduced the direction for about an hour, and we ended up at the restaurant.
And we enjoyed the meal. From this incident, I learned that when I travel, I have to check a battery of my internet router not only my phone.