A large percentage of those who lose a loved one tend to have what is known today as, After Death Communications. One of the most common methods that those who have passed tend to communication is through dreams, although there are other methods that are also used.
Some researchers theorize that the reason that dreams are the most common form of after death communication is that the dreamer is in an altered state of consciousness, enabling the spirit to make contact.
Another method of the dead communicating with the living is through an actual physical manifestation where they appear to their loved ones, often telling them that they are happy where they are and that their loved one should grieve no more.
Some people have even reported phone calls from their deceased friends or family. Though phone communication with the dead is rare, it has been reported. When on the phone the voice is usually unmistakably as belonging to the person who has passed. They may just say hello, ask for someone, or actually tell the person on the other end that they are fine.
In addition to these forms of after death communication there are some more subtle communications, such as an odor or scent that you may easily associate with a passed loved one. This could be a perfume, cigar smoke, etc. The scent often has no source and disappears as quickly as it appeared.
Other signs of communication could include pictures of your loved one falling, or other mementos showing up continuously. All of these things could be attempts at communication.