I think, first of all, mobile phones should be launced by keeping in mind the choices of demographies of that area e.g., their affordability level, GSM/CDMA,3G penetration in that country, the features in mobile most demanded by majority in that country because these are the things that affects the consumer behavior. If you are launching a very cheap rated mobile in a country with very low GSM/3G,CDMAetc Penetration then obviously your sale will be low. Same is the case when you are launching a very expensive phone in a country with low affordability of majority & When it comes features e.g., If you are launching a phone with 5 mega pixel camera but majority there prefer music player+5mega pixel camera then of course you sale will be low. That is how Consumer Behavior effects mobile phone sales. Do rate my answer as this will help me evaluating my answer.