Abstract
The production, distribution nnd consumption of counterfeit mobile phones in Kenya have been increasing at an alarming rate The consumption of counterfeit mobile phones has negative impact on the health of the consumer, the environment and reduction in the Government revenue. The study relied on economic theory of consumer demand as a basis of the theoretical framework. Data was collected randomly from the 370 mobile phones owners and users who were at the lime of data collection in Nairobi. Kenya. Logistic regression was used to estimate demand functions for counterfeit mobile phones. The results indicated that gender and education level significantly influence the consumer demand behavior for counterfeit mobile phones in Kenya