How much is the appropriate amount when using Japanese USIM?

I'm traveling to Japan

I don't think I'll use the Internet a lot

I think I'll use it as a map and sometimes I'll use it for searching.

I'll use Facebook and YouTube at a place with Wi-Fi.

How much is the capacity appropriate?

598 2018-11-07 Gentleman

I used 300M a day and it was enough
It's about the same as what I said

Gentleman 7 years ago 0

Thank you.

Gentleman 7 years ago 0

I used a map, Instagram, and Kakaotalk. I used 1.5GB
Looking at the top, I think I used a lot, but 1.5 gigabytes is totally enough

Lady 7 years ago 0

Thank you.

Gentleman 7 years ago 0

If you do it cheaply, you can find out where the Wi-Fi works and take it with youkk

Gentleman 7 years ago 0

But I'm trying to make it a little saferHaha

Gentleman 7 years ago 0