I was laying on grass in Tenerife reading R.A.W.'s "Prometheus Rising" when I saw big white circular object in the sky. It was quite big, moving in zig-zag pattern for several minutes and then became smaller and disappeared. I recorded a video with phone but it was your typical 'ufo' recording - shaky white small dot with autofocus missing all the time. The phone unexpectedly turned off and died few weeks later before I transferred video anywhere.

The lesson was to backup my phone as I do with PC and never buy Samsung again.