When I buy USIM at GS25, can I buy everything if I go anywhere near GS25

pu1. There are a lot of places that don't work. Check here
http://www.gswhom.com/

2017-12-21

OK

pu2. I sell USIM for lte

2017-12-21

OK

pu3. If you use lte nano USIM, there won't be many convenience stores that sell it yet. In that case, they said they'd send it by courier

2017-12-21

OK