Absolutely. You need an active internet connection to buy and display digital tickets on the OBB Scotty app to avoid fines on Austrian trains. 

 Yes. Coverage is excellent in Salzburg, allowing you to share photos of the Hohensalzburg Fortress and "Sound of Music" locations instantly. 

 Yes. Vienna is famous for its coffee house culture, and our eSIM provides stable 4G+/5G speeds suitable for Zoom calls from Café Central or Sacher. 

 Most modern phones do, but you must check our specific list here: eSIM Compatible Devices to be 100% sure before purchasing. 

 To give you the best speed and coverage, our eSIM connects to Austria’s premium Tier-1 networks, typically A1 Telekom Austria or Magenta Telekom (T-Mobile). This ensures you get the fastest available 4G/LTE (and 5G) speeds, whether you are in a café in Vienna or a ski lodge in Innsbruck. 

This specific plan is valid only within Austria (or, if it's a regional plan, you'd say "Yes"). This is the most important question for "Euro-trip" travelers.

• For Germany/Italy/Hungary (EU): Your connection will stop at the border unless you buy our Europe Regional eSIM.
• For Switzerland (non-EU): This is a major roaming trap. You must get our Europe Regional eSIM that explicitly includes Switzerland, or you will face massive fees.

Yes, 100%. Buying a physical "prepaid" SIM at Vienna Airport (VIE) requires you to find the kiosk, wait in line, and go through a mandatory passport registration process as required by EU law. Our eSIM is 100% digital, requires no ID registration, and can be installed before you fly, so you are connected the moment you land. 

It depends. Austria is in the EU, so "Roam Like at Home" applies only to EU citizens.

• If you are from the UK (Post-Brexit): Most UK carriers (like O2, Vodafone, Three) have reintroduced daily roaming fees (e.g., £2-£6 per day).
• If you are from the USA/Canada/Asia: Your home carrier will charge expensive international rates (e.g., $10-$14 per day).

A Cellesim eSIM is a one-time prepaid fee that is significantly cheaper than these roaming charges.