They were both done with Soundtoys fantastic Echoboy.
"Example 9 shows Echoboy set to a PingPong delay with the Transmitter output style to give a telephonic effect. On his mix of U2s 'No Line On The Horizon' Delcan Gaffney uses Echoboy to add a subtle amount of ambience to the Lead Vocal "The echo is just a kind of warm ping-pong sound. There’s no reverb on the track, there’s not even any feedback on the delay, it’s all about the dry sound with a little bit of space on the side, provided by the delay….. I’m not a huge fan of reverb anyway; it’s better to do the same thing with delays.”(Secrets of the Mix Engineers: Declan Gaffney). Example 9b shows a similar setting."
To see a picture of Declan Gaffney's Echoboy setting go here: