my Samsung E5 duos does not download over mobile network... any suggestions on how to fix

[AC Question]

my samsung E5 duos makes calls and sends sms. it connects to wi-fi and download over wi-fi but it doesn't down load data over mobile network.

 

[B. Diddy]

Welcome to Android Central! Which carrier are you on? Does your plan include mobile data? Is your mobile data turned on? Are you certain the APN settings are correct?