What is used for recording this?

In your other post you had said these were done by your 'friend'. Can't you simply ask your friend what was used to record? Other than your friend using a microphone and a lot of reverberation effect, it would be next to impossible for anyone here to guess what he used.
 
(1) He may have used a recording app on a smartphone, but he plugged something into it.

(2) You should be shooting for much (MUCH) higher quality than that...
 
Everything except for the vocal appears to be recorded elsewhere (i.e. he downloaded a backing track or built it with virtual instruments)

As Massive said, this is actually pretty bad quality for the vocal part. To get good vocal results on your phone, you need peripherals such as an external interface and good mics.
 
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