To see a phone number in your dream suggests that you need to make contact with someone or reach out for help.
To dream that you cannot remember or find a phone number means that you need to start being more independent and responsible.
To dream that you cannot dial a phone number correctly suggests that you are having difficulties in getting through to someone in your waking life. Consider whose phone number you are trying to dial. Perhaps he or she is not taking your advice or listening to what you have to say. The message is not getting through. If you have a dream that you are deleting a phone number implies that you need to learn to cut ties with those who are not supportive of you. You need to evaluate who your true friends are and who are negative energy.
To dream that you are giving someone your telephone number means that you need to take the initiative and reach out to others. You need to make the first move.