estimating switching costs in mobile telephony the uk lukasz grzybowskiy last revised january 2007 abstract this paper uses multinominal and mixed logit on british consumer panel data from 1999 2001 to estimate results of estimation show that consumers services face signi cant which vary according network operators operator choice is also explained by observed unobserved heterogeneity tastes furthermore probability depends characteristics such as age ways they spend their free time keywords jel classi cation c25 d12 l96 i would like thank volkswagen stiftung for generous nancial support made research possible all errors are mine ydepartamento de fundamentos del analisis economico universidad alicante campus san vicente 03080 spain e mail merlin fae ua es 1 introduction when end current relationship with a seller have bear one switch ing an important implication homogeneous products ex ante become heterogeneous after purchase provide rms market power be cause
