Xperia mini pro mobile

[Animals4me]

Just getting started with this phone and still struggling as what the bookelt tells me isn't appearing on screen.Have entered some contacts and saved as such and in the phone book but am unable to text them as say don't exist and won't allow me to even enter number manually which isn't what I wish to do when they are listed in phone book.Any suggestions please? Thanks

[Animals4me]

Also does anyone know how to go into internet files looked at on this phone above and delete them?