Comment This not a samsung bug, and it's already fixed (Score 1) 151
The dialer no longer allows special characters that are part or USSD codes. see patch:
https://android.googlesource.com/platform/packages/apps/Contacts/+/39948dc7e34dc2041b801058dada28fedb80c388%5E!/#F0
now, everyone can still rant about how long it will take for owners to receive an updated version of Android (if ever).
and before anyone starts the iOS vs Android bantering. No, iOS does not have this particular flaw:
"Specifically, if a URL contains the * or # characters, the Phone application does not attempt to dial the corresponding phone number."
https://developer.apple.com/library/ios/#featuredarticles/iPhoneURLScheme_Reference/Articles/PhoneLinks.html