Nokia 6030 cannot display SMS content.

According to my guess, there are two things that can't be displayed normally. One is that some words are lost, the other is that the opening words are garbled or can't be opened at all.

The first kind of words belongs to the compatibility problem between the other party's mobile phone and your mobile phone text input system, which generally appears on some old mobile phones. But the 6030 system is very new, and I have never had such a problem when I used it before.

In the second case, there may be a problem with the system (software) or the decoding chip (hardware), but you said that some of them can display normally, so it should be a software problem.

Find a place to repair your mobile phone. I can't see it, so I can't explain it accurately.