Why Nokia never use number "4" on its phone model?

Nokia as the market leader of mobile phone never use number 4on its first digit 's phone model. Doesn't it look so weird?

A we know that Nokia never releases phone model with 4 as its first digit number. But Nokia ever released phone using number 4 but in second digit or more, but never use it in first. Some Nokia phone using number for:
Nokia 5410
Nokia 3410
and a few more...

Based on the fact, the phone using number 4 in its type never get success in market.

Yes, it's may be the possible one and even the most rated reason. Based on Nokia phone history, the phone model usiong number 4 in its name never get success. Besides, number 4 is described as a tipped over chair which means a bad luck on bussiness or unsuccess. Yeah that may be the best answer why Nokia neber insert number 4 in its phone model's first digit such 4100,4650, or many more..

But hey, thus is only a reference, but sometime that's true, none know exactly. But if you have a stronger reason than this one, you may share it with me.