问题
How to make a USSD call on a iPhone from a button in a webpage?
I have tried the urlencode tel%3A*141%23 but that still does not work.
This is possible cause I can do a USSD call from my contacts application on Iphone?
Does anyone have a solution for this, I don't even need the USSD call to run in the background, just to make the USSD call.
I have read https://developer.apple.com/library/ios/#featuredarticles/iPhoneURLScheme_Reference/Articles/PhoneLinks.html about the special characters * and #
But how does my Contacts app do it?
回答1:
The contacts app has special privileges us mere mortal developers cannot possess.
The * and # characters are blocked from being used in tel: URLs.
来源：https://stackoverflow.com/questions/9334145/how-to-make-a-ussd-call-on-a-iphone-from-a-button-in-a-webpage