How to turn off Call Waiting- iPhone 4

[zcal31]

I have a phone interview coming up and the only phone line I will have access to is my iPhone. I need to turn off my call waiting to avoid the annoying interruption of beeps and hang up noise during this call. I have searched other forums and even found video on how to do this but I don't seem to have the same settings as the iPhones ( I am guessing iPhone 3) they use in their examples. I really need to know if this is an option. It would be greatly appreciated.

Thanks for any answers!

 

[IrishVixen]

I have a phone interview coming up and the only phone line I will have access to is my iPhone. I need to turn off my call waiting to avoid the annoying interruption of beeps and hang up noise during this call. I have searched other forums and even found video on how to do this but I don't seem to have the same settings as the iPhones ( I am guessing iPhone 3) they use in their examples. I really need to know if this is an option. It would be greatly appreciated.

Thanks for any answers!

Helps if you list the firmware version & carrier when you post problems like this, so someone with the same setup can advise you correctly. At least on my iPhone 4/4.2.1 with AT&T, that setting toggle is under:

Settings -> Phone -> under Calls, "Call Waiting" (forwards one more menu to the actual on/off toggle)

I'm guessing that this might be a carrier based setting though, rather than a phone model specific one. If you can't find a similar toggle, you might check with your carrier to see if they provide an option to turn that off.