Apartment front gate won't open with iPhone 6.

Hey Everybody,

Currently, I am having an issue with my iPhone 6 where dialing '9' will not open the front gate to the apartment complex. I've never had this issue with any of the previous iPhones that I've owned. I have to tell my visitors to dial my wife's code which calls her phone (She has a Galaxy S4).

The apartment complex front office immediately asked if I owned an iPhone 6. As it turns out, several other iPhone 6 users in the community have the same problem!

Did Apple make changes to the phones' bi-tonality to the number '9' key????