@amymagdalena yeah, the only thing I've seen re: Roaming is that providers with generous and affordable #DataFlatrates like #drei from #Austria will block cards used exclusively for over 91 days for data roaming in places like #Germany.
- The only reason to bother with anything but a cheap Data-only (e)SIM is to get a local phone number and be able to make calls…
Sadly I don't know Vietnamese at all…
