 DeafBlind people have both hearing and visual impairments, which makes communication with other people often dependent on expensive technologies such as Braille displays. This paper presents Morse Input and Output, or MIO, a Vibrotactile Interface for Android evaluated through experiments and interviews with DeafBlind participants. MIO was shown to enable consistent text entry and recognition after only a few hours of practice. Overall, it is a cost-effective, portable interface for DeafBlind people without access to Braille displays or similar.