1. It would be much easier if the user was able to call the contact by a simple touch instead of having to swipe over the name.
2. Searching for a contact using the dialpad digits searches for the fist name only , it would be more convenient if it would show results if i continued entering digits for the letters of the last name.
3. There is no option to view contact details after it appears on the search, the only way is to call and hang up then you will see the option to view contact details, whilst a simple button next the contact name can make it much easier.