A few months ago my SE W995 replaced my bros phone no with the person above so both had same no it only happened with them two people and i got bros no, but wed it done it with a freinds no with previous person HHEELLPP

Please write that again in English and with some punctuation.

My SE W995 replaced my bros phone no with the person above, so both had same no it only happened with them two people, then it done it again with another person.

I'm lost. Maybe you should rephrase what your saying as it doesn't make sense!

*Confused*

I think what he's saying is that the phonebook on his SonyEricsson W995 has become corrupted. In particular, the entry for his brother's phone number has been overwritten by the phone number of the person immediately preceding in alphabetical order.

Unfortunately, this sort of memory corruption is well known in SonyEricsson handsets. The handset will need a master reset and to have the firmware reflashed. If there is no existing backup (why?) then the contacts will need to written down beforehand and entered again manually afterwards,