#69 seems a somewhat alarming (may seem like a sun or a bomb exploding) while we wish to convey a massage of security and get away from any alarming sub-context. #57 gives the impression of communication between the earth and outer-space. We focus on people and use the mobile as means.
#129 is nice, but this resembles the battery or signal strength gouge in mobile phones and not sampling or being attuned. Can you please try giving us some variations towards that?