Exactly this one back in 2004 or 2005. I remember there were a musical game that I used to play all the time.
Whenever someone would call me, the plastic thingy would glow like a lightshow.
OMG I had this back in 2004 I think But I had a Nokia 3210 as my first phone
edit:The fact that you had to attach its crappy camera at the bottom of this phone