Worked well for me

Not easy to operate this app, but it works well when used correctly. I came back from a trip in Japan where the app worked for me in multiple cities. You should check the supported countries first, only 18 countries are currently included in the 300mb package.

You should install the app and a profile in advance. Then when traveling open the app, check out the supported wifi networks listed in it and through the settings app connect to one of them. No credentials are required.

AT&T can surely make a simpler to operate app, therefore only 4 stars.

John-b5843 about AT&T Global Wi-Fi