This may be iOS 8, iPhone 6, T-Mobile, or a combination of all three, but thought I'd crowd source some feedback here. I've found that if I'm making a call to an automated system, and I'm connected to WiFi (i.e. bad signal, auto switch to WiFi calling), that if I attempt to interact with the automated system, the call drops. An example would be: Call T-Mobile Listen to the prompts Attempt to respond with numeric input or voice input (i.e please enter or say the last four of your SSN) Call Apple Listen to the prompts Attempt to respond with numeric input or voice input (i.e. please enter or say the reason for your call) As soon as I'm off WiFi, everything is fine. I can reproduce this over and over and over. This leads me to believe that there's a corner case bug (being the one I'm describing) where automated playback downstreams fine, but attempting to respond to those systems through WiFi calling crashes on the upstream. Can someone (anyone), attempt to reproduce this? Thanks!