After the rise of the internet, rapid expansion of mobile phone usage creates another challenge to the survey industry. As for now, the potential impact still remains more or less latent. However, with further changes in prices and in the share of mobile-only persons, we can expect a considerable change in telephone survey practice. Our paper addresses the issue of noncoverage and nonresponse patterns of these surveys. The aspect which is strongly connected to coverage and noncoverage is the actual availability. Persons may have internet access or not, but with mobile device it can be turned off most of the time. When defining the noncoverage and nonresponse in internet and mobile phone surveys, these issues have to be carefully considered. Further specifics arise from the patterns of usage as well as the corresponding attitudes and life-styles. The main purpose of the paper is thus to identify the segments that have specific noncoverage properties and nonresponse behavior. The empirical data are based on a national Slovenian face-to-face survey with high response rate (80%, n=1.500), which was carried out in April 2005. The basic focus of the survey was the personal ICT usage (official Eurostat ICT module) and the life-styles. The propensity of various segments to participate in a mobile phone survey was empirically elaborated. The propensity for participation in a  web survey was also analyzed. Various regression models were used for data analysis.