Excellent

I bought this product for use in Germany (Munich and Berchtesgaden), and Austria (Salzburg) in my unlocked iPhone 6S (Yes, it does work with phones despite what they insist in the Amazon product QA).

In the main city areas I received a solid 3G connection which was fast enough to browse the Internet, navigate and stream YouTube. Overall, I'd say very reliable connection and speed. The price was about $40 cheaper than a 5 day WiFi device rental, so excellent value there. Over my 11 day trip I was only able to use about 6 gigs, and that was trying hard. I was hoping I could use the remaining data for trips next year, but apparently 365 day usage refers to calendar days"”the website says data expires in January of the following year regardless of when you activated it. Major disappointment there.
The nice thing about this card, which I'm unsure if you can do with their cheaper cell phone specific SIM card, is that you can enable personal hotspot and use your phone as a WiFi device for your other electronics.

Overall I would purchase another card from them again when no other more convenient/more affordable options are available.

This sim card is very easy to use, after installed into the phone it works well without any setup (no registration). 12GB for 365 days (whole year), it really worth to buy. But it's a data card, so you can't call or text, the speed isn't good, can't download or upload big files. But for normal users, it's a good sim card, even you can use it in USA.

I have a Samsung Galaxy Active Tab 3 with LTE. I wanted to use its data connection as an inexpensive internet backup to my Verizon phone when I travel through coastal North Carolina. I plugged in the SIM and it works fine. Can't beat the price for the sense of security.

I bought the 12gb for 12 months and used it mostly in US. I am working in the cruise ship and this is good for me because our ship wasn't always in the US. The connection is good. I just finished the 12 months and planning to buy again!