Research shows that older adults increasingly use the mobile phone for maintenance and development of social interactions with their family members, peers, and caregivers as providers of emotional support and social companionship snd this study found that the composition of emotional support and of social companionship networks scarcely predicts the frequency of mobile phone communication. Conversely, according to the results, it seems that more frequent in-person and landline phone communication with network members are positively associated with mobile phone communication of older adults with their network members.