RedPhone has been folded into Signal.
Please install Signal instead:
https://play.google.com/store/apps/details?id=org.thoughtcrime.securesms
2.0:
★ RedPhone has moved to Signal!
1.0.3:
★ Add IPv6 support for T-Mobile devices on IPv6-only APNs.
★ Mute music applications when incoming call comes in.
★ Bug fixes.
1.0.2:
★ Major improvements to audio quality.
★ Only display contacts with RedPhone installed.
★ Add a manual dialer.
0.9.6:
★ Fix for SELinux bug on S4.
★ Support an option to disable bluetooth.
9Apps 4.9
