its getting success run as dekstop application not on symbian simulator, the code ported to qt for symbian. Fiisrt, when it testing on my devices my phone is getting hang. Getting suggestion from someone to include sym_iap_util.h and add qt_SetDefaultIap() to my code and me myself initiative to add several linking to socket library such ac esock and insock library same as we can see on QFtp examples. my phone is not getting hang anymore but my application close unexpectedly without upload anything.