i purchase mobile set sony ericsson U8i imei-012305003051488 on date 30/10/2010 from lotus electronic super market city center mp nagar zone 1 bhopal mp.science then set not working properly complain-1earspekar slow volume not hearable .2very slow at startup. 3-hang and freeze . three times your service center repairs but not a single problem solved.service workorder no are 1-se311abh10671,2-se311abh10859,3-se311********. and now when fourth time contect to service center they refused. above set have manufactering defected and not repairable.and lotus bhopal also not coapreting and refuse to submmiting complained. set is under w- period.