To see or use a cell phone in your dream indicates that you are being receptive to new information.
It also represents your mobility.
Alternatively, the dream signifies lack of understanding.
Perhaps you are having difficulties getting through to someone.
To dream that you lost your cell phone represents a lack of communication.
You have lost touch with some aspect of your feelings or your Self.
If you find a cell phone, then it symbolizes reconnection and reopened communication.