This article focuses on the study of where mobile devices and social media tools are taken into consideration in the Finnish confirmation training entity as a new opportunity to work together. The research is based on the ethnographical method. The data was collected by observation in two confirmation training camp periods and interviewing confirmation training participants. The aim was to find out ways mobile devices were exploited in confirmation training pedagogy, how adolescents reacted to such mobile device use and how adolescents described their personal mobile device use. The research material is analysed by inductive content analysis. The findings are discussed in the theoretical context of the communities of practice (CoPs), originally formed by Lave and Wenger. According to the results, mobile device use, in the confirmation training programme did not seem to be that special for adolescents. At the same time, the youth considered it important to have the possibility to use mobile devices according to their own preferences. Using mobile devices in confirmation training challenged the traditional CoP setting, as adolescents used mobile technology more in their own way, being familiar with it in their earlier virtual communities of practice (VCoPs), instead of the plans of the workers of confirmation training.