Does downloading illegal music onto your iphone 5 make it slower?

Or mess up or something

Not at all I would recommend using a program called mesh on a computer not threw a app

Absolutely not. I have downloaded over 3000 songs on a website called thepiratebay.com all for free and all on my iphone 5 and it has done nothing. Illegal music is no different then paying for music other than the money part. When you download free music, it puts the file onto your computer. When you open the file, it will open in itunes and the song is then in your library. Getting the file from the internet rather than Itunes makes no difference. Except you help the artist rather than the record company.