Who called from 4056225349

Got a text that just said "Hey ;D" I resonpded with "Hi! Who is this" never received a response back.

Yes received text from this #. It new my name. When asked who it was they replied with ":) A.dd me on y.a.h.0.0.. sn is nehasmiley9".  I replied "Again I ask, who is this?" They replied "sry I have no signal ;("

Me too got a message to add them to yahoo msgr. Then said had no signal. Lucygurly was the screen name.

I got the exact same text but it was from a NJ number

Got the same message from kaylachick41 from tele# 2707754106. They tried several times to pressure me to add them to ya-hoo msngr but would not answers the simple question of who was calling. What kind of scam is this?