why won't my "1" work when I'm in a call?

[iMore Question]

i.e....press "1" for more options, or please enter you account #, etc. only happens when i'm in a call and have the numeric pad visible. does not happen with calculator or keyboard.

 

[SwitchBeach]

What device?
What do you mean when you say it "won't work"? What happens or doesn't happen?
Have you tried hard rebooting the device?