This is based on a custom SIM application that does crypto. You cannot just reply to the flash SMS by your self.
It shouldn't cost you money abroad though, BankID Mobile is free on many networks but if you use a reseller like OneCall they are unable to differentiate SMS and BankID flash SMS so you will be charged for it.
You could use the BankID iOS app which does the authentication crypto in the iOS app instead of using the SIM app.
It shouldn't cost you money abroad though, BankID Mobile is free on many networks but if you use a reseller like OneCall they are unable to differentiate SMS and BankID flash SMS so you will be charged for it.
You could use the BankID iOS app which does the authentication crypto in the iOS app instead of using the SIM app.