Hi all, I'm using an iPhone5c and am trying to make calls using my iPad and MacBook Pro but every time I try I get that 'Call Using iPhone Failed' message. I looked in my settings and FaceTime is stuck on 'waiting for activation.' Is this the problem? The phone itself makes calls but I'm not able to from my other devices. Any thoughts? --- Post Merged, Jun 6, 2017 --- Update....I got FaceTime to activate, yet still calls can't be made on my other devices. What gives? --- Post Merged, Jun 6, 2017 --- Another update. I just somehow received a call on my iPad, via my iPhone. So it appears that I simply can't call out on other devices.