I've had trouble configuring a replacement dialer, as the S4 dialer is a nightmare to work with. Unfortunately, I can't find an option to set a replacement dialer as the new default. I can open the dialer and call, however if a call comes in, or if I hit an e-mail link, it defaults to the stock dialer. On my HTC phones I could set the default as either stock or replacement. Anyone figure out how to do this? I'm using Apex launcher, and tried Swipe Dialer Pro - and ran into the same problem, which the dev is trying to figure out. Is there any solution? thanks!