As migrant students cope with relocation challenges, communication with left-behind family and friends can enhance their well-being, while interactions with co-national and local students can facilitate their acculturation to the host country. This article studies Indonesian and Vietnamese university students in Singapore to understand the role that technologically mediated communication plays in facilitating migrant students’ adaptation and acculturation. Through a media deprivation exercise, it finds that communication with left-behind family and friends offers support but can monopolise the students’ free time and impede their interaction with locals. Social media communication also exacerbates the development of cultural silos that comprise only co-nationals. On the positive side, migrant students used the online realm as an acculturative space to better understand the host country’s attitudes towards foreigners, thereby better equipping them for interactions with locals. Migrant students must strike a balance between exploiting mediated communication links to their home identities and exploring host cultures.