How much does it cost to make Skype calls on my au phone?
Skype on au is free of charge if you subscribe to the IS Flat plan, LTE Flat plan or one of the other designated minute plans.
You’ll be charged ¥934 (not including consumption tax, which will be charged additionally) per month if you don’t subscribe to either the IS Flat plan, LTE Flat plan or one of the other designated minute plans.
Be aware that this monthly charge will be applied if you make or receive any Skype calls at all using Skype on au during a particular month.
Learn more about the designated minute plans where Skype calls made or received using Skype on au are free of charge.